./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/product-lines/elevator_spec3_product24.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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:02:58,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:02:58,264 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:02:58,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:02:58,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:02:58,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:02:58,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:02:58,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:02:58,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:02:58,302 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:02:58,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:02:58,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:02:58,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:02:58,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:02:58,308 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:02:58,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:02:58,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:02:58,309 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:02:58,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:02:58,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:02:58,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:02:58,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:02:58,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:02:58,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:02:58,311 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:02:58,311 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:02:58,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:02:58,311 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:02:58,312 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:02:58,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:02:58,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:02:58,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:02:58,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:02:58,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:02:58,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:02:58,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:02:58,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:02:58,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:02:58,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:02:58,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:02:58,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:02:58,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:02:58,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2024-11-18 14:02:58,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:02:58,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:02:58,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:02:58,624 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:02:58,625 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:02:58,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2024-11-18 14:03:00,032 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:03:00,363 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:03:00,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2024-11-18 14:03:00,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43c4ca73b/a74f430bb3c544a081ebe26630be6488/FLAG947cee55d [2024-11-18 14:03:00,398 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43c4ca73b/a74f430bb3c544a081ebe26630be6488 [2024-11-18 14:03:00,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:03:00,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:03:00,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:03:00,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:03:00,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:03:00,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:03:00" (1/1) ... [2024-11-18 14:03:00,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7feb0062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:00, skipping insertion in model container [2024-11-18 14:03:00,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:03:00" (1/1) ... [2024-11-18 14:03:00,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:03:01,103 WARN L250 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_spec3_product24.cil.c[75121,75134] [2024-11-18 14:03:01,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:03:01,122 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:03:01,132 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2024-11-18 14:03:01,133 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [67] [2024-11-18 14:03:01,134 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [425] [2024-11-18 14:03:01,134 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [545] [2024-11-18 14:03:01,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [641] [2024-11-18 14:03:01,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2290] [2024-11-18 14:03:01,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2951] [2024-11-18 14:03:01,135 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3138] [2024-11-18 14:03:01,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3504] [2024-11-18 14:03:01,136 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3539] [2024-11-18 14:03:01,255 WARN L250 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_spec3_product24.cil.c[75121,75134] [2024-11-18 14:03:01,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:03:01,292 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:03:01,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01 WrapperNode [2024-11-18 14:03:01,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:03:01,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:03:01,294 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:03:01,294 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:03:01,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,393 INFO L138 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 965 [2024-11-18 14:03:01,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:03:01,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:03:01,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:03:01,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:03:01,409 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,445 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]. [2024-11-18 14:03:01,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,506 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:03:01,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:03:01,529 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:03:01,529 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:03:01,530 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (1/1) ... [2024-11-18 14:03:01,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:03:01,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:01,573 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) [2024-11-18 14:03:01,575 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 [2024-11-18 14:03:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:03:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-18 14:03:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-18 14:03:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-18 14:03:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-18 14:03:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 14:03:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 14:03:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 14:03:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 14:03:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-18 14:03:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-18 14:03:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 14:03:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 14:03:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-18 14:03:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-18 14:03:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 14:03:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 14:03:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 14:03:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 14:03:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 14:03:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 14:03:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 14:03:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 14:03:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 14:03:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 14:03:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 14:03:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 14:03:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 14:03:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 14:03:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 14:03:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 14:03:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-11-18 14:03:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-11-18 14:03:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 14:03:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 14:03:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-11-18 14:03:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-11-18 14:03:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 14:03:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 14:03:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 14:03:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 14:03:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 14:03:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 14:03:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 14:03:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 14:03:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:03:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 14:03:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 14:03:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 14:03:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 14:03:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 14:03:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 14:03:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 14:03:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 14:03:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 14:03:01,632 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 14:03:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 14:03:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 14:03:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 14:03:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 14:03:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 14:03:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 14:03:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2024-11-18 14:03:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2024-11-18 14:03:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:03:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:03:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 14:03:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 14:03:01,633 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-18 14:03:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-18 14:03:01,816 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:03:01,819 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:03:03,068 INFO L? ?]: Removed 485 outVars from TransFormulas that were not future-live. [2024-11-18 14:03:03,069 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:03:03,106 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:03:03,106 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 14:03:03,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:03:03 BoogieIcfgContainer [2024-11-18 14:03:03,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:03:03,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:03:03,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:03:03,113 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:03:03,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:03:00" (1/3) ... [2024-11-18 14:03:03,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3317814a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:03:03, skipping insertion in model container [2024-11-18 14:03:03,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:03:01" (2/3) ... [2024-11-18 14:03:03,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3317814a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:03:03, skipping insertion in model container [2024-11-18 14:03:03,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:03:03" (3/3) ... [2024-11-18 14:03:03,117 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2024-11-18 14:03:03,132 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:03:03,132 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:03:03,216 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:03:03,225 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;@729fa76d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:03:03,225 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:03:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2024-11-18 14:03:03,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-18 14:03:03,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:03,250 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:03,251 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:03,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1523378071, now seen corresponding path program 1 times [2024-11-18 14:03:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501260286] [2024-11-18 14:03:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:03,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501260286] [2024-11-18 14:03:03,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501260286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:03,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:03,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:03,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476463629] [2024-11-18 14:03:03,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:03,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:03,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:04,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:04,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:04,010 INFO L87 Difference]: Start difference. First operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:04,282 INFO L93 Difference]: Finished difference Result 1237 states and 2044 transitions. [2024-11-18 14:03:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2024-11-18 14:03:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:04,313 INFO L225 Difference]: With dead ends: 1237 [2024-11-18 14:03:04,314 INFO L226 Difference]: Without dead ends: 625 [2024-11-18 14:03:04,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:04,333 INFO L432 NwaCegarLoop]: 998 mSDtfsCounter, 91 mSDsluCounter, 4905 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5903 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:04,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5903 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-18 14:03:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 623. [2024-11-18 14:03:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 477 states have (on average 1.649895178197065) internal successors, (787), 497 states have internal predecessors, (787), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2024-11-18 14:03:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1018 transitions. [2024-11-18 14:03:04,463 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1018 transitions. Word has length 67 [2024-11-18 14:03:04,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:04,466 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1018 transitions. [2024-11-18 14:03:04,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1018 transitions. [2024-11-18 14:03:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:03:04,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:04,474 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:04,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:03:04,474 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:04,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:04,475 INFO L85 PathProgramCache]: Analyzing trace with hash 5336215, now seen corresponding path program 1 times [2024-11-18 14:03:04,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:04,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369289060] [2024-11-18 14:03:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:04,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:04,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:04,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369289060] [2024-11-18 14:03:04,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369289060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:04,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764739649] [2024-11-18 14:03:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:04,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:04,798 INFO L87 Difference]: Start difference. First operand 623 states and 1018 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:04,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:04,934 INFO L93 Difference]: Finished difference Result 1241 states and 2039 transitions. [2024-11-18 14:03:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:04,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2024-11-18 14:03:04,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:04,945 INFO L225 Difference]: With dead ends: 1241 [2024-11-18 14:03:04,945 INFO L226 Difference]: Without dead ends: 634 [2024-11-18 14:03:04,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:04,950 INFO L432 NwaCegarLoop]: 1000 mSDtfsCounter, 90 mSDsluCounter, 4904 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5904 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:04,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5904 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:04,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2024-11-18 14:03:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 623. [2024-11-18 14:03:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 477 states have (on average 1.649895178197065) internal successors, (787), 497 states have internal predecessors, (787), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2024-11-18 14:03:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1018 transitions. [2024-11-18 14:03:04,990 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1018 transitions. Word has length 68 [2024-11-18 14:03:04,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:04,991 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1018 transitions. [2024-11-18 14:03:04,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:04,992 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1018 transitions. [2024-11-18 14:03:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-18 14:03:04,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:04,996 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:04,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:03:04,997 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:04,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1234650165, now seen corresponding path program 1 times [2024-11-18 14:03:04,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:04,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932176511] [2024-11-18 14:03:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:04,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932176511] [2024-11-18 14:03:05,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932176511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:05,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:05,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:05,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001340360] [2024-11-18 14:03:05,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:05,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:05,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:05,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:05,182 INFO L87 Difference]: Start difference. First operand 623 states and 1018 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:05,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:05,246 INFO L93 Difference]: Finished difference Result 1228 states and 2017 transitions. [2024-11-18 14:03:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:05,247 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2024-11-18 14:03:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:05,254 INFO L225 Difference]: With dead ends: 1228 [2024-11-18 14:03:05,255 INFO L226 Difference]: Without dead ends: 593 [2024-11-18 14:03:05,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:05,260 INFO L432 NwaCegarLoop]: 988 mSDtfsCounter, 14 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:05,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2959 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-18 14:03:05,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2024-11-18 14:03:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 450 states have (on average 1.6333333333333333) internal successors, (735), 468 states have internal predecessors, (735), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 962 transitions. [2024-11-18 14:03:05,332 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 962 transitions. Word has length 68 [2024-11-18 14:03:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:05,332 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 962 transitions. [2024-11-18 14:03:05,333 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 962 transitions. [2024-11-18 14:03:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 14:03:05,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:05,337 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:05,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 14:03:05,338 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:05,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:05,338 INFO L85 PathProgramCache]: Analyzing trace with hash -813454771, now seen corresponding path program 1 times [2024-11-18 14:03:05,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:05,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163429826] [2024-11-18 14:03:05,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:05,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163429826] [2024-11-18 14:03:05,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163429826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:05,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:05,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:05,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127823649] [2024-11-18 14:03:05,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:05,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:05,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:05,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:05,577 INFO L87 Difference]: Start difference. First operand 593 states and 962 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:05,655 INFO L93 Difference]: Finished difference Result 1179 states and 1923 transitions. [2024-11-18 14:03:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2024-11-18 14:03:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:05,661 INFO L225 Difference]: With dead ends: 1179 [2024-11-18 14:03:05,661 INFO L226 Difference]: Without dead ends: 587 [2024-11-18 14:03:05,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:05,665 INFO L432 NwaCegarLoop]: 952 mSDtfsCounter, 63 mSDsluCounter, 4702 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5654 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:05,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5654 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-18 14:03:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2024-11-18 14:03:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6261261261261262) internal successors, (722), 462 states have internal predecessors, (722), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 949 transitions. [2024-11-18 14:03:05,688 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 949 transitions. Word has length 69 [2024-11-18 14:03:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:05,689 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 949 transitions. [2024-11-18 14:03:05,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 949 transitions. [2024-11-18 14:03:05,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:03:05,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:05,691 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:05,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 14:03:05,691 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:05,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:05,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1390465157, now seen corresponding path program 1 times [2024-11-18 14:03:05,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:05,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495187052] [2024-11-18 14:03:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:05,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:05,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495187052] [2024-11-18 14:03:05,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495187052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:05,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:05,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:05,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823224083] [2024-11-18 14:03:05,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:05,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:05,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:05,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:05,885 INFO L87 Difference]: Start difference. First operand 587 states and 949 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:05,960 INFO L93 Difference]: Finished difference Result 1167 states and 1897 transitions. [2024-11-18 14:03:05,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:05,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-11-18 14:03:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:05,965 INFO L225 Difference]: With dead ends: 1167 [2024-11-18 14:03:05,966 INFO L226 Difference]: Without dead ends: 581 [2024-11-18 14:03:05,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:05,969 INFO L432 NwaCegarLoop]: 940 mSDtfsCounter, 49 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5594 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:05,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5594 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-18 14:03:05,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-18 14:03:05,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6187214611872147) internal successors, (709), 456 states have internal predecessors, (709), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 936 transitions. [2024-11-18 14:03:05,988 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 936 transitions. Word has length 70 [2024-11-18 14:03:05,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:05,989 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 936 transitions. [2024-11-18 14:03:05,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 936 transitions. [2024-11-18 14:03:05,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:03:05,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:05,990 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:05,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 14:03:05,991 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:05,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:05,991 INFO L85 PathProgramCache]: Analyzing trace with hash -495575364, now seen corresponding path program 1 times [2024-11-18 14:03:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:05,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238816743] [2024-11-18 14:03:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:05,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:06,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:06,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238816743] [2024-11-18 14:03:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238816743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:06,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 14:03:06,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110256813] [2024-11-18 14:03:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:06,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:03:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:06,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:03:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:06,205 INFO L87 Difference]: Start difference. First operand 581 states and 936 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:06,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:06,283 INFO L93 Difference]: Finished difference Result 1155 states and 1871 transitions. [2024-11-18 14:03:06,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:03:06,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2024-11-18 14:03:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:06,291 INFO L225 Difference]: With dead ends: 1155 [2024-11-18 14:03:06,292 INFO L226 Difference]: Without dead ends: 581 [2024-11-18 14:03:06,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:03:06,298 INFO L432 NwaCegarLoop]: 928 mSDtfsCounter, 24 mSDsluCounter, 4618 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5546 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:06,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5546 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:06,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-18 14:03:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-18 14:03:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6164383561643836) internal successors, (708), 456 states have internal predecessors, (708), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 935 transitions. [2024-11-18 14:03:06,326 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 935 transitions. Word has length 70 [2024-11-18 14:03:06,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:06,326 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 935 transitions. [2024-11-18 14:03:06,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 935 transitions. [2024-11-18 14:03:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-18 14:03:06,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:06,329 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:06,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 14:03:06,331 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:06,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:06,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1232755761, now seen corresponding path program 1 times [2024-11-18 14:03:06,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:06,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943762361] [2024-11-18 14:03:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:06,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:06,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:06,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943762361] [2024-11-18 14:03:06,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943762361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:06,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:06,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133541408] [2024-11-18 14:03:06,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:06,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:06,457 INFO L87 Difference]: Start difference. First operand 581 states and 935 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:06,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:06,510 INFO L93 Difference]: Finished difference Result 1146 states and 1856 transitions. [2024-11-18 14:03:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2024-11-18 14:03:06,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:06,519 INFO L225 Difference]: With dead ends: 1146 [2024-11-18 14:03:06,519 INFO L226 Difference]: Without dead ends: 581 [2024-11-18 14:03:06,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:06,523 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 15 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:06,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2745 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:06,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-18 14:03:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-18 14:03:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6141552511415524) internal successors, (707), 456 states have internal predecessors, (707), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:06,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 934 transitions. [2024-11-18 14:03:06,548 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 934 transitions. Word has length 71 [2024-11-18 14:03:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:06,550 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 934 transitions. [2024-11-18 14:03:06,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 934 transitions. [2024-11-18 14:03:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 14:03:06,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:06,553 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:06,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 14:03:06,554 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:06,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash -341209317, now seen corresponding path program 1 times [2024-11-18 14:03:06,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:06,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690886076] [2024-11-18 14:03:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:06,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:06,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:06,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690886076] [2024-11-18 14:03:06,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690886076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:06,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:06,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:06,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819801901] [2024-11-18 14:03:06,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:06,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:06,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:06,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:06,672 INFO L87 Difference]: Start difference. First operand 581 states and 934 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:06,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:06,744 INFO L93 Difference]: Finished difference Result 1146 states and 1854 transitions. [2024-11-18 14:03:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:06,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-18 14:03:06,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:06,749 INFO L225 Difference]: With dead ends: 1146 [2024-11-18 14:03:06,749 INFO L226 Difference]: Without dead ends: 581 [2024-11-18 14:03:06,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:06,752 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 14 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:06,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2747 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-18 14:03:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-18 14:03:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6118721461187215) internal successors, (706), 456 states have internal predecessors, (706), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 933 transitions. [2024-11-18 14:03:06,772 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 933 transitions. Word has length 72 [2024-11-18 14:03:06,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:06,772 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 933 transitions. [2024-11-18 14:03:06,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:06,772 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 933 transitions. [2024-11-18 14:03:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 14:03:06,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:06,773 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:06,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 14:03:06,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:06,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2087030198, now seen corresponding path program 1 times [2024-11-18 14:03:06,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:06,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132790463] [2024-11-18 14:03:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:06,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:06,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:06,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132790463] [2024-11-18 14:03:06,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132790463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:06,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:06,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818682461] [2024-11-18 14:03:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:06,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:06,879 INFO L87 Difference]: Start difference. First operand 581 states and 933 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:06,923 INFO L93 Difference]: Finished difference Result 1146 states and 1852 transitions. [2024-11-18 14:03:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2024-11-18 14:03:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:06,929 INFO L225 Difference]: With dead ends: 1146 [2024-11-18 14:03:06,929 INFO L226 Difference]: Without dead ends: 581 [2024-11-18 14:03:06,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:06,933 INFO L432 NwaCegarLoop]: 922 mSDtfsCounter, 13 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:06,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2749 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:06,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-18 14:03:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-18 14:03:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6095890410958904) internal successors, (705), 456 states have internal predecessors, (705), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 932 transitions. [2024-11-18 14:03:06,951 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 932 transitions. Word has length 73 [2024-11-18 14:03:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:06,951 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 932 transitions. [2024-11-18 14:03:06,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 932 transitions. [2024-11-18 14:03:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 14:03:06,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:06,953 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:06,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 14:03:06,953 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:06,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash -265406784, now seen corresponding path program 1 times [2024-11-18 14:03:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:06,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982738889] [2024-11-18 14:03:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:06,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982738889] [2024-11-18 14:03:07,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982738889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:07,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:07,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:07,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889878652] [2024-11-18 14:03:07,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:07,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:07,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:07,064 INFO L87 Difference]: Start difference. First operand 581 states and 932 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:07,101 INFO L93 Difference]: Finished difference Result 1146 states and 1850 transitions. [2024-11-18 14:03:07,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:03:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2024-11-18 14:03:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:07,109 INFO L225 Difference]: With dead ends: 1146 [2024-11-18 14:03:07,112 INFO L226 Difference]: Without dead ends: 581 [2024-11-18 14:03:07,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:07,116 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 12 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:07,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2751 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:07,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-18 14:03:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2024-11-18 14:03:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6073059360730593) internal successors, (704), 456 states have internal predecessors, (704), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-18 14:03:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 931 transitions. [2024-11-18 14:03:07,138 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 931 transitions. Word has length 74 [2024-11-18 14:03:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:07,138 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 931 transitions. [2024-11-18 14:03:07,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 14:03:07,139 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 931 transitions. [2024-11-18 14:03:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:03:07,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:07,140 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:07,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 14:03:07,140 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:07,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash -494959813, now seen corresponding path program 1 times [2024-11-18 14:03:07,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:07,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480697773] [2024-11-18 14:03:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:07,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480697773] [2024-11-18 14:03:07,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480697773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:07,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:07,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:07,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595686558] [2024-11-18 14:03:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:07,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:07,450 INFO L87 Difference]: Start difference. First operand 581 states and 931 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 14:03:08,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:08,203 INFO L93 Difference]: Finished difference Result 1652 states and 2679 transitions. [2024-11-18 14:03:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-11-18 14:03:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:08,216 INFO L225 Difference]: With dead ends: 1652 [2024-11-18 14:03:08,216 INFO L226 Difference]: Without dead ends: 1089 [2024-11-18 14:03:08,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:08,221 INFO L432 NwaCegarLoop]: 940 mSDtfsCounter, 793 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:08,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 4379 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 14:03:08,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-11-18 14:03:08,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1081. [2024-11-18 14:03:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 817 states have (on average 1.572827417380661) internal successors, (1285), 851 states have internal predecessors, (1285), 212 states have call successors, (212), 55 states have call predecessors, (212), 51 states have return successors, (215), 201 states have call predecessors, (215), 208 states have call successors, (215) [2024-11-18 14:03:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1712 transitions. [2024-11-18 14:03:08,298 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1712 transitions. Word has length 75 [2024-11-18 14:03:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:08,299 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1712 transitions. [2024-11-18 14:03:08,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-18 14:03:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1712 transitions. [2024-11-18 14:03:08,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-18 14:03:08,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:08,300 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:08,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 14:03:08,300 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:08,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 897935419, now seen corresponding path program 1 times [2024-11-18 14:03:08,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:08,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499971972] [2024-11-18 14:03:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:03:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:08,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499971972] [2024-11-18 14:03:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499971972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:08,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946833801] [2024-11-18 14:03:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:08,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:08,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:08,530 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) [2024-11-18 14:03:08,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:03:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:08,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:03:08,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:08,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:03:08,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:08,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946833801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:08,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:08,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:03:08,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940870125] [2024-11-18 14:03:08,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:08,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:03:08,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:03:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:08,924 INFO L87 Difference]: Start difference. First operand 1081 states and 1712 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:09,016 INFO L93 Difference]: Finished difference Result 3121 states and 5008 transitions. [2024-11-18 14:03:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:03:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2024-11-18 14:03:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:09,056 INFO L225 Difference]: With dead ends: 3121 [2024-11-18 14:03:09,057 INFO L226 Difference]: Without dead ends: 2058 [2024-11-18 14:03:09,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:09,065 INFO L432 NwaCegarLoop]: 1635 mSDtfsCounter, 894 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:09,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 2459 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2024-11-18 14:03:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 1997. [2024-11-18 14:03:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1516 states have (on average 1.5890501319261214) internal successors, (2409), 1584 states have internal predecessors, (2409), 383 states have call successors, (383), 100 states have call predecessors, (383), 97 states have return successors, (402), 366 states have call predecessors, (402), 379 states have call successors, (402) [2024-11-18 14:03:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 3194 transitions. [2024-11-18 14:03:09,171 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 3194 transitions. Word has length 75 [2024-11-18 14:03:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:09,173 INFO L471 AbstractCegarLoop]: Abstraction has 1997 states and 3194 transitions. [2024-11-18 14:03:09,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 3194 transitions. [2024-11-18 14:03:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:03:09,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:09,175 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:09,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:03:09,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 14:03:09,376 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:09,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2044949855, now seen corresponding path program 1 times [2024-11-18 14:03:09,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:09,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015996126] [2024-11-18 14:03:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:09,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:03:09,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:09,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015996126] [2024-11-18 14:03:09,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015996126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318153549] [2024-11-18 14:03:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:09,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:09,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:09,561 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) [2024-11-18 14:03:09,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:03:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:09,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 14:03:09,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:03:09,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318153549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 14:03:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534513195] [2024-11-18 14:03:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:09,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:03:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:03:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:09,911 INFO L87 Difference]: Start difference. First operand 1997 states and 3194 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:10,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:10,064 INFO L93 Difference]: Finished difference Result 4482 states and 7205 transitions. [2024-11-18 14:03:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:03:10,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-11-18 14:03:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:10,082 INFO L225 Difference]: With dead ends: 4482 [2024-11-18 14:03:10,083 INFO L226 Difference]: Without dead ends: 2503 [2024-11-18 14:03:10,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 14:03:10,094 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 892 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:10,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1751 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:10,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2024-11-18 14:03:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2456. [2024-11-18 14:03:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 1867 states have (on average 1.600428494911623) internal successors, (2988), 1952 states have internal predecessors, (2988), 469 states have call successors, (469), 121 states have call predecessors, (469), 119 states have return successors, (492), 450 states have call predecessors, (492), 465 states have call successors, (492) [2024-11-18 14:03:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3949 transitions. [2024-11-18 14:03:10,196 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3949 transitions. Word has length 76 [2024-11-18 14:03:10,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:10,196 INFO L471 AbstractCegarLoop]: Abstraction has 2456 states and 3949 transitions. [2024-11-18 14:03:10,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 14:03:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3949 transitions. [2024-11-18 14:03:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 14:03:10,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:10,198 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:10,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:03:10,398 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,SelfDestructingSolverStorable12 [2024-11-18 14:03:10,398 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:10,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1888955776, now seen corresponding path program 1 times [2024-11-18 14:03:10,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:10,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904707714] [2024-11-18 14:03:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:10,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:10,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:10,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904707714] [2024-11-18 14:03:10,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904707714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:10,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349164613] [2024-11-18 14:03:10,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:10,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:10,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:10,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:10,571 INFO L87 Difference]: Start difference. First operand 2456 states and 3949 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:03:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:11,278 INFO L93 Difference]: Finished difference Result 7264 states and 11921 transitions. [2024-11-18 14:03:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2024-11-18 14:03:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:11,323 INFO L225 Difference]: With dead ends: 7264 [2024-11-18 14:03:11,323 INFO L226 Difference]: Without dead ends: 4826 [2024-11-18 14:03:11,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:11,343 INFO L432 NwaCegarLoop]: 1034 mSDtfsCounter, 923 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 4750 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:11,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 4750 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:03:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2024-11-18 14:03:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4773. [2024-11-18 14:03:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4773 states, 3629 states have (on average 1.5960319647285754) internal successors, (5792), 3794 states have internal predecessors, (5792), 908 states have call successors, (908), 236 states have call predecessors, (908), 235 states have return successors, (1095), 878 states have call predecessors, (1095), 902 states have call successors, (1095) [2024-11-18 14:03:11,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4773 states to 4773 states and 7795 transitions. [2024-11-18 14:03:11,635 INFO L78 Accepts]: Start accepts. Automaton has 4773 states and 7795 transitions. Word has length 78 [2024-11-18 14:03:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:11,635 INFO L471 AbstractCegarLoop]: Abstraction has 4773 states and 7795 transitions. [2024-11-18 14:03:11,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 14:03:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4773 states and 7795 transitions. [2024-11-18 14:03:11,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 14:03:11,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:11,638 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:11,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 14:03:11,638 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:11,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1066916199, now seen corresponding path program 1 times [2024-11-18 14:03:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:11,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368888567] [2024-11-18 14:03:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:11,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:03:11,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:11,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368888567] [2024-11-18 14:03:11,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368888567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:11,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:11,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:11,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518900866] [2024-11-18 14:03:11,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:11,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:11,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:11,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:11,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:11,737 INFO L87 Difference]: Start difference. First operand 4773 states and 7795 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 14:03:12,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:12,012 INFO L93 Difference]: Finished difference Result 9552 states and 15733 transitions. [2024-11-18 14:03:12,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:12,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2024-11-18 14:03:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:12,065 INFO L225 Difference]: With dead ends: 9552 [2024-11-18 14:03:12,065 INFO L226 Difference]: Without dead ends: 4797 [2024-11-18 14:03:12,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:12,104 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 12 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:12,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2715 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4797 states. [2024-11-18 14:03:12,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4797 to 4781. [2024-11-18 14:03:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 3635 states have (on average 1.5944979367262724) internal successors, (5796), 3800 states have internal predecessors, (5796), 908 states have call successors, (908), 240 states have call predecessors, (908), 237 states have return successors, (1085), 876 states have call predecessors, (1085), 902 states have call successors, (1085) [2024-11-18 14:03:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7789 transitions. [2024-11-18 14:03:12,505 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7789 transitions. Word has length 79 [2024-11-18 14:03:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:12,505 INFO L471 AbstractCegarLoop]: Abstraction has 4781 states and 7789 transitions. [2024-11-18 14:03:12,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 14:03:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7789 transitions. [2024-11-18 14:03:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 14:03:12,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:12,507 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:12,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 14:03:12,508 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:12,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:12,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1335847313, now seen corresponding path program 1 times [2024-11-18 14:03:12,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:12,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17288120] [2024-11-18 14:03:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:03:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17288120] [2024-11-18 14:03:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17288120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:12,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:12,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012118492] [2024-11-18 14:03:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:12,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:12,705 INFO L87 Difference]: Start difference. First operand 4781 states and 7789 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:03:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:13,626 INFO L93 Difference]: Finished difference Result 14288 states and 23975 transitions. [2024-11-18 14:03:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:13,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2024-11-18 14:03:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:13,737 INFO L225 Difference]: With dead ends: 14288 [2024-11-18 14:03:13,738 INFO L226 Difference]: Without dead ends: 9525 [2024-11-18 14:03:13,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:13,774 INFO L432 NwaCegarLoop]: 1001 mSDtfsCounter, 918 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 4630 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:13,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 4630 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:03:13,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9525 states. [2024-11-18 14:03:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9525 to 9456. [2024-11-18 14:03:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9456 states, 7191 states have (on average 1.591016548463357) internal successors, (11441), 7516 states have internal predecessors, (11441), 1791 states have call successors, (1791), 474 states have call predecessors, (1791), 473 states have return successors, (2552), 1737 states have call predecessors, (2552), 1781 states have call successors, (2552) [2024-11-18 14:03:14,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9456 states to 9456 states and 15784 transitions. [2024-11-18 14:03:14,343 INFO L78 Accepts]: Start accepts. Automaton has 9456 states and 15784 transitions. Word has length 87 [2024-11-18 14:03:14,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:14,344 INFO L471 AbstractCegarLoop]: Abstraction has 9456 states and 15784 transitions. [2024-11-18 14:03:14,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 14:03:14,345 INFO L276 IsEmpty]: Start isEmpty. Operand 9456 states and 15784 transitions. [2024-11-18 14:03:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 14:03:14,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:14,346 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 14:03:14,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 14:03:14,347 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:14,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash 287721918, now seen corresponding path program 1 times [2024-11-18 14:03:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:14,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772591113] [2024-11-18 14:03:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:14,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:03:14,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:14,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772591113] [2024-11-18 14:03:14,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772591113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:14,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:14,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349502723] [2024-11-18 14:03:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:14,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:14,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:14,437 INFO L87 Difference]: Start difference. First operand 9456 states and 15784 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:03:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:14,975 INFO L93 Difference]: Finished difference Result 18966 states and 32045 transitions. [2024-11-18 14:03:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:14,976 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2024-11-18 14:03:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:15,058 INFO L225 Difference]: With dead ends: 18966 [2024-11-18 14:03:15,059 INFO L226 Difference]: Without dead ends: 9528 [2024-11-18 14:03:15,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:15,109 INFO L432 NwaCegarLoop]: 910 mSDtfsCounter, 12 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:15,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2706 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:15,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9528 states. [2024-11-18 14:03:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9528 to 9496. [2024-11-18 14:03:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9496 states, 7227 states have (on average 1.58862598588626) internal successors, (11481), 7544 states have internal predecessors, (11481), 1791 states have call successors, (1791), 490 states have call predecessors, (1791), 477 states have return successors, (2538), 1733 states have call predecessors, (2538), 1781 states have call successors, (2538) [2024-11-18 14:03:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9496 states to 9496 states and 15810 transitions. [2024-11-18 14:03:15,741 INFO L78 Accepts]: Start accepts. Automaton has 9496 states and 15810 transitions. Word has length 88 [2024-11-18 14:03:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:15,742 INFO L471 AbstractCegarLoop]: Abstraction has 9496 states and 15810 transitions. [2024-11-18 14:03:15,742 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:03:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9496 states and 15810 transitions. [2024-11-18 14:03:15,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 14:03:15,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:15,746 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-18 14:03:15,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 14:03:15,747 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:15,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2130045691, now seen corresponding path program 1 times [2024-11-18 14:03:15,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:15,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678088711] [2024-11-18 14:03:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:03:15,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:15,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678088711] [2024-11-18 14:03:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678088711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:15,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:15,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120311574] [2024-11-18 14:03:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:15,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:15,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:15,950 INFO L87 Difference]: Start difference. First operand 9496 states and 15810 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:03:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:17,349 INFO L93 Difference]: Finished difference Result 28506 states and 49532 transitions. [2024-11-18 14:03:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:17,350 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2024-11-18 14:03:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:17,540 INFO L225 Difference]: With dead ends: 28506 [2024-11-18 14:03:17,540 INFO L226 Difference]: Without dead ends: 19028 [2024-11-18 14:03:17,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:17,613 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 913 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 4774 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:17,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 4774 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 14:03:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19028 states. [2024-11-18 14:03:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19028 to 18927. [2024-11-18 14:03:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18927 states, 14407 states have (on average 1.5854792809051155) internal successors, (22842), 15036 states have internal predecessors, (22842), 3562 states have call successors, (3562), 974 states have call predecessors, (3562), 957 states have return successors, (6282), 3460 states have call predecessors, (6282), 3544 states have call successors, (6282) [2024-11-18 14:03:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18927 states to 18927 states and 32686 transitions. [2024-11-18 14:03:18,766 INFO L78 Accepts]: Start accepts. Automaton has 18927 states and 32686 transitions. Word has length 97 [2024-11-18 14:03:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:18,766 INFO L471 AbstractCegarLoop]: Abstraction has 18927 states and 32686 transitions. [2024-11-18 14:03:18,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 14:03:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 18927 states and 32686 transitions. [2024-11-18 14:03:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 14:03:18,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:18,770 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-18 14:03:18,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 14:03:18,770 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:18,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash -593479918, now seen corresponding path program 1 times [2024-11-18 14:03:18,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:18,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804261339] [2024-11-18 14:03:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:18,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 14:03:18,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:18,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804261339] [2024-11-18 14:03:18,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804261339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:18,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314246706] [2024-11-18 14:03:18,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:18,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:18,871 INFO L87 Difference]: Start difference. First operand 18927 states and 32686 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:03:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:19,957 INFO L93 Difference]: Finished difference Result 37980 states and 66846 transitions. [2024-11-18 14:03:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:19,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2024-11-18 14:03:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:20,183 INFO L225 Difference]: With dead ends: 37980 [2024-11-18 14:03:20,183 INFO L226 Difference]: Without dead ends: 19071 [2024-11-18 14:03:20,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:20,378 INFO L432 NwaCegarLoop]: 910 mSDtfsCounter, 11 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:20,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2706 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19071 states. [2024-11-18 14:03:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19071 to 19007. [2024-11-18 14:03:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19007 states, 14479 states have (on average 1.5831203812417984) internal successors, (22922), 15108 states have internal predecessors, (22922), 3562 states have call successors, (3562), 990 states have call predecessors, (3562), 965 states have return successors, (6266), 3452 states have call predecessors, (6266), 3544 states have call successors, (6266) [2024-11-18 14:03:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19007 states to 19007 states and 32750 transitions. [2024-11-18 14:03:21,556 INFO L78 Accepts]: Start accepts. Automaton has 19007 states and 32750 transitions. Word has length 98 [2024-11-18 14:03:21,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:21,558 INFO L471 AbstractCegarLoop]: Abstraction has 19007 states and 32750 transitions. [2024-11-18 14:03:21,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 14:03:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 19007 states and 32750 transitions. [2024-11-18 14:03:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-18 14:03:21,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:21,561 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2024-11-18 14:03:21,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 14:03:21,561 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:21,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1092576084, now seen corresponding path program 1 times [2024-11-18 14:03:21,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:21,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547446144] [2024-11-18 14:03:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:21,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 14:03:21,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:21,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547446144] [2024-11-18 14:03:21,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547446144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:21,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:21,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 14:03:21,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433583282] [2024-11-18 14:03:21,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:21,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:03:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:03:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 14:03:21,725 INFO L87 Difference]: Start difference. First operand 19007 states and 32750 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:23,888 INFO L93 Difference]: Finished difference Result 57160 states and 104791 transitions. [2024-11-18 14:03:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 14:03:23,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2024-11-18 14:03:23,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:24,439 INFO L225 Difference]: With dead ends: 57160 [2024-11-18 14:03:24,440 INFO L226 Difference]: Without dead ends: 38171 [2024-11-18 14:03:24,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:24,829 INFO L432 NwaCegarLoop]: 1036 mSDtfsCounter, 908 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 4790 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:24,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 4790 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:03:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38171 states. [2024-11-18 14:03:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38171 to 38006. [2024-11-18 14:03:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38006 states, 28955 states have (on average 1.5800725263339666) internal successors, (45751), 30208 states have internal predecessors, (45751), 7109 states have call successors, (7109), 1974 states have call predecessors, (7109), 1941 states have return successors, (16302), 6911 states have call predecessors, (16302), 7075 states have call successors, (16302) [2024-11-18 14:03:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38006 states to 38006 states and 69162 transitions. [2024-11-18 14:03:27,406 INFO L78 Accepts]: Start accepts. Automaton has 38006 states and 69162 transitions. Word has length 108 [2024-11-18 14:03:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:27,409 INFO L471 AbstractCegarLoop]: Abstraction has 38006 states and 69162 transitions. [2024-11-18 14:03:27,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:03:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 38006 states and 69162 transitions. [2024-11-18 14:03:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-18 14:03:27,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:27,412 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2024-11-18 14:03:27,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 14:03:27,412 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:27,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash 690605715, now seen corresponding path program 1 times [2024-11-18 14:03:27,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:27,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317743513] [2024-11-18 14:03:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:27,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 14:03:27,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:27,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317743513] [2024-11-18 14:03:27,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317743513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:27,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:03:27,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 14:03:27,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258499330] [2024-11-18 14:03:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:27,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:03:27,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:03:27,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 14:03:27,519 INFO L87 Difference]: Start difference. First operand 38006 states and 69162 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:03:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:29,948 INFO L93 Difference]: Finished difference Result 76014 states and 142409 transitions. [2024-11-18 14:03:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:03:29,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2024-11-18 14:03:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:30,674 INFO L225 Difference]: With dead ends: 76014 [2024-11-18 14:03:30,675 INFO L226 Difference]: Without dead ends: 37978 [2024-11-18 14:03:30,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:03:30,897 INFO L432 NwaCegarLoop]: 910 mSDtfsCounter, 10 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:30,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2706 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:03:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37978 states. [2024-11-18 14:03:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37978 to 37852. [2024-11-18 14:03:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37852 states, 28852 states have (on average 1.5761472341605434) internal successors, (45475), 30106 states have internal predecessors, (45475), 7052 states have call successors, (7052), 1979 states have call predecessors, (7052), 1947 states have return successors, (16096), 6841 states have call predecessors, (16096), 7018 states have call successors, (16096) [2024-11-18 14:03:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37852 states to 37852 states and 68623 transitions. [2024-11-18 14:03:33,361 INFO L78 Accepts]: Start accepts. Automaton has 37852 states and 68623 transitions. Word has length 109 [2024-11-18 14:03:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:33,362 INFO L471 AbstractCegarLoop]: Abstraction has 37852 states and 68623 transitions. [2024-11-18 14:03:33,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-18 14:03:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 37852 states and 68623 transitions. [2024-11-18 14:03:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 14:03:33,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:33,372 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-11-18 14:03:33,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 14:03:33,372 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:33,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:33,373 INFO L85 PathProgramCache]: Analyzing trace with hash -640134009, now seen corresponding path program 1 times [2024-11-18 14:03:33,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:33,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53988835] [2024-11-18 14:03:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:33,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 14:03:33,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:33,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53988835] [2024-11-18 14:03:33,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53988835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:33,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142986418] [2024-11-18 14:03:33,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:33,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:33,680 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) [2024-11-18 14:03:33,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:03:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:34,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:03:34,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:34,151 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 14:03:34,151 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:34,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142986418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:34,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:34,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 14:03:34,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938888417] [2024-11-18 14:03:34,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:34,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 14:03:34,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 14:03:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:34,155 INFO L87 Difference]: Start difference. First operand 37852 states and 68623 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 14:03:36,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:36,579 INFO L93 Difference]: Finished difference Result 84684 states and 161057 transitions. [2024-11-18 14:03:36,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 14:03:36,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2024-11-18 14:03:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:37,265 INFO L225 Difference]: With dead ends: 84684 [2024-11-18 14:03:37,266 INFO L226 Difference]: Without dead ends: 61196 [2024-11-18 14:03:37,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:03:37,857 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 920 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:37,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 1832 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:03:37,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61196 states. [2024-11-18 14:03:40,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61196 to 60952. [2024-11-18 14:03:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60952 states, 46578 states have (on average 1.5896345914380179) internal successors, (74042), 48538 states have internal predecessors, (74042), 11226 states have call successors, (11226), 3131 states have call predecessors, (11226), 3147 states have return successors, (28809), 11029 states have call predecessors, (28809), 11176 states have call successors, (28809) [2024-11-18 14:03:40,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60952 states to 60952 states and 114077 transitions. [2024-11-18 14:03:40,933 INFO L78 Accepts]: Start accepts. Automaton has 60952 states and 114077 transitions. Word has length 161 [2024-11-18 14:03:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:03:40,934 INFO L471 AbstractCegarLoop]: Abstraction has 60952 states and 114077 transitions. [2024-11-18 14:03:40,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 14:03:40,934 INFO L276 IsEmpty]: Start isEmpty. Operand 60952 states and 114077 transitions. [2024-11-18 14:03:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-18 14:03:40,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:03:40,943 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 14:03:40,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 14:03:41,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:41,145 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:03:41,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:03:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash -814538208, now seen corresponding path program 1 times [2024-11-18 14:03:41,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:03:41,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836181141] [2024-11-18 14:03:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:41,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:03:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 27 proven. 26 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-18 14:03:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:03:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836181141] [2024-11-18 14:03:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836181141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:03:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98439430] [2024-11-18 14:03:41,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:03:41,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:03:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:03:41,863 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) [2024-11-18 14:03:41,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:03:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:03:42,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:03:42,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:03:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 14:03:42,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:03:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98439430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:03:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:03:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-18 14:03:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708955050] [2024-11-18 14:03:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:03:42,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:03:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:03:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:03:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:03:42,636 INFO L87 Difference]: Start difference. First operand 60952 states and 114077 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-18 14:03:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:03:52,811 INFO L93 Difference]: Finished difference Result 172581 states and 335925 transitions. [2024-11-18 14:03:52,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:03:52,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 189 [2024-11-18 14:03:52,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:03:53,841 INFO L225 Difference]: With dead ends: 172581 [2024-11-18 14:03:53,841 INFO L226 Difference]: Without dead ends: 111647 [2024-11-18 14:03:54,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:03:54,495 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 2592 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 7030 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2784 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 7579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 7030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:03:54,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2784 Valid, 2529 Invalid, 7579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [549 Valid, 7030 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-18 14:03:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111647 states. [2024-11-18 14:03:59,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111647 to 110599. [2024-11-18 14:03:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110599 states, 84717 states have (on average 1.5854196914432759) internal successors, (134312), 87933 states have internal predecessors, (134312), 19982 states have call successors, (19982), 5563 states have call predecessors, (19982), 5899 states have return successors, (61203), 20033 states have call predecessors, (61203), 19916 states have call successors, (61203) [2024-11-18 14:04:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110599 states to 110599 states and 215497 transitions. [2024-11-18 14:04:01,315 INFO L78 Accepts]: Start accepts. Automaton has 110599 states and 215497 transitions. Word has length 189 [2024-11-18 14:04:01,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:04:01,316 INFO L471 AbstractCegarLoop]: Abstraction has 110599 states and 215497 transitions. [2024-11-18 14:04:01,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-18 14:04:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 110599 states and 215497 transitions. [2024-11-18 14:04:01,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-18 14:04:01,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:04:01,324 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:04:01,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:04:01,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:01,526 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:04:01,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:04:01,527 INFO L85 PathProgramCache]: Analyzing trace with hash -506286891, now seen corresponding path program 1 times [2024-11-18 14:04:01,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:04:01,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918143210] [2024-11-18 14:04:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:01,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:04:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 14:04:01,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:04:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918143210] [2024-11-18 14:04:01,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918143210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:04:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650630339] [2024-11-18 14:04:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:04:01,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:04:01,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:04:01,961 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) [2024-11-18 14:04:01,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:04:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:04:02,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:04:02,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:04:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-18 14:04:02,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:04:02,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650630339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:04:02,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:04:02,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-18 14:04:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673445983] [2024-11-18 14:04:02,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:04:02,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 14:04:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:04:02,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 14:04:02,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:04:02,507 INFO L87 Difference]: Start difference. First operand 110599 states and 215497 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 5 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24)