./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product32.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_spec13_product32.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 e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:56:24,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:56:24,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:56:24,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:56:24,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:56:24,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:56:24,336 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:56:24,337 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:56:24,337 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:56:24,339 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:56:24,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:56:24,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:56:24,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:56:24,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:56:24,342 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:56:24,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:56:24,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:56:24,343 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:56:24,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:56:24,344 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:56:24,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:56:24,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:56:24,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:56:24,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:56:24,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:56:24,348 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:56:24,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:56:24,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:56:24,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:56:24,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:56:24,349 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:56:24,349 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:56:24,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:56:24,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:56:24,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:56:24,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:56:24,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:56:24,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:56:24,352 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:56:24,352 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:56:24,353 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:56:24,354 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:56:24,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb [2024-11-18 13:56:24,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:56:24,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:56:24,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:56:24,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:56:24,644 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:56:24,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2024-11-18 13:56:26,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:56:26,383 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:56:26,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2024-11-18 13:56:26,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadcbb915/f7337d2055f64126bb513e6bde2d0c1f/FLAGcc4a83f57 [2024-11-18 13:56:26,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eadcbb915/f7337d2055f64126bb513e6bde2d0c1f [2024-11-18 13:56:26,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:56:26,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:56:26,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:56:26,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:56:26,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:56:26,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:26" (1/1) ... [2024-11-18 13:56:26,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f42e7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:26, skipping insertion in model container [2024-11-18 13:56:26,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:56:26" (1/1) ... [2024-11-18 13:56:26,716 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:56:26,918 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_spec13_product32.cil.c[1546,1559] [2024-11-18 13:56:27,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:56:27,365 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:56:27,375 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-18 13:56:27,377 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] [2024-11-18 13:56:27,377 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [160] [2024-11-18 13:56:27,378 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [251] [2024-11-18 13:56:27,379 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [604] [2024-11-18 13:56:27,379 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1271] [2024-11-18 13:56:27,379 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1391] [2024-11-18 13:56:27,379 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1426] [2024-11-18 13:56:27,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1792] [2024-11-18 13:56:27,380 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3453] [2024-11-18 13:56:27,387 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_spec13_product32.cil.c[1546,1559] [2024-11-18 13:56:27,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:56:27,523 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:56:27,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27 WrapperNode [2024-11-18 13:56:27,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:56:27,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:56:27,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:56:27,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:56:27,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,605 INFO L138 Inliner]: procedures = 97, calls = 354, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 937 [2024-11-18 13:56:27,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:56:27,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:56:27,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:56:27,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:56:27,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,627 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,661 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 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 13:56:27,662 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,662 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,704 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:56:27,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:56:27,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:56:27,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:56:27,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (1/1) ... [2024-11-18 13:56:27,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:56:27,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:27,783 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 13:56:27,785 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 13:56:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-18 13:56:27,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-18 13:56:27,831 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-18 13:56:27,831 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-18 13:56:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 13:56:27,832 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 13:56:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 13:56:27,832 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 13:56:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-18 13:56:27,833 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-18 13:56:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 13:56:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 13:56:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 13:56:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 13:56:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 13:56:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 13:56:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 13:56:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 13:56:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-18 13:56:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-18 13:56:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 13:56:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 13:56:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 13:56:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 13:56:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-18 13:56:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-18 13:56:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:56:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-18 13:56:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-18 13:56:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 13:56:27,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 13:56:27,835 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-18 13:56:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-18 13:56:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-18 13:56:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-18 13:56:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 13:56:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 13:56:27,836 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 13:56:27,836 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 13:56:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 13:56:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 13:56:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 13:56:27,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 13:56:27,838 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 13:56:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 13:56:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 13:56:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 13:56:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 13:56:27,839 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 13:56:27,839 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 13:56:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 13:56:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 13:56:27,840 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 13:56:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:56:27,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:56:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 13:56:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 13:56:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 13:56:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 13:56:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 13:56:27,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 13:56:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 13:56:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 13:56:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 13:56:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 13:56:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 13:56:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 13:56:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 13:56:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:56:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:56:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 13:56:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 13:56:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-18 13:56:27,844 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-18 13:56:28,054 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:56:28,058 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:56:29,347 INFO L? ?]: Removed 498 outVars from TransFormulas that were not future-live. [2024-11-18 13:56:29,347 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:56:29,387 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:56:29,387 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-18 13:56:29,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:29 BoogieIcfgContainer [2024-11-18 13:56:29,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:56:29,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:56:29,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:56:29,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:56:29,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:56:26" (1/3) ... [2024-11-18 13:56:29,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cfa7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:29, skipping insertion in model container [2024-11-18 13:56:29,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:56:27" (2/3) ... [2024-11-18 13:56:29,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cfa7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:56:29, skipping insertion in model container [2024-11-18 13:56:29,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:56:29" (3/3) ... [2024-11-18 13:56:29,398 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2024-11-18 13:56:29,414 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:56:29,415 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:56:29,513 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:56:29,521 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;@5048650c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:56:29,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:56:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 637 states, 496 states have (on average 1.6733870967741935) internal successors, (830), 516 states have internal predecessors, (830), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-18 13:56:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 13:56:29,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:29,552 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:29,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:29,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1623887556, now seen corresponding path program 1 times [2024-11-18 13:56:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164196126] [2024-11-18 13:56:29,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:56:30,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164196126] [2024-11-18 13:56:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164196126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:30,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887100001] [2024-11-18 13:56:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:30,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:30,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:30,105 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 13:56:30,107 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 13:56:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:30,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:30,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:30,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887100001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:30,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:30,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:30,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117898770] [2024-11-18 13:56:30,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:30,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:30,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:30,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:30,620 INFO L87 Difference]: Start difference. First operand has 637 states, 496 states have (on average 1.6733870967741935) internal successors, (830), 516 states have internal predecessors, (830), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:56:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:30,832 INFO L93 Difference]: Finished difference Result 1273 states and 2116 transitions. [2024-11-18 13:56:30,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:30,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2024-11-18 13:56:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:30,856 INFO L225 Difference]: With dead ends: 1273 [2024-11-18 13:56:30,856 INFO L226 Difference]: Without dead ends: 636 [2024-11-18 13:56:30,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:30,874 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 17 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:30,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3067 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2024-11-18 13:56:30,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 636. [2024-11-18 13:56:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 497 states have (on average 1.6579476861167002) internal successors, (824), 515 states have internal predecessors, (824), 110 states have call successors, (110), 30 states have call predecessors, (110), 28 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-18 13:56:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1041 transitions. [2024-11-18 13:56:30,996 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1041 transitions. Word has length 83 [2024-11-18 13:56:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:30,996 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1041 transitions. [2024-11-18 13:56:30,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:56:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1041 transitions. [2024-11-18 13:56:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 13:56:31,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:31,009 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 13:56:31,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:56:31,211 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,SelfDestructingSolverStorable0 [2024-11-18 13:56:31,212 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:31,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:31,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1294876807, now seen corresponding path program 1 times [2024-11-18 13:56:31,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:31,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639931749] [2024-11-18 13:56:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:31,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:31,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:31,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639931749] [2024-11-18 13:56:31,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639931749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:31,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914550678] [2024-11-18 13:56:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:31,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:31,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:31,580 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 13:56:31,582 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 13:56:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:31,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:31,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:56:32,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:32,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914550678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:32,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:32,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:56:32,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623346873] [2024-11-18 13:56:32,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:32,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:32,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:32,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:32,005 INFO L87 Difference]: Start difference. First operand 636 states and 1041 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:32,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:32,275 INFO L93 Difference]: Finished difference Result 1325 states and 2186 transitions. [2024-11-18 13:56:32,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:32,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2024-11-18 13:56:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:32,284 INFO L225 Difference]: With dead ends: 1325 [2024-11-18 13:56:32,284 INFO L226 Difference]: Without dead ends: 699 [2024-11-18 13:56:32,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:32,289 INFO L432 NwaCegarLoop]: 1002 mSDtfsCounter, 122 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:32,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2929 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:56:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-18 13:56:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 681. [2024-11-18 13:56:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 541 states have (on average 1.6783733826247689) internal successors, (908), 559 states have internal predecessors, (908), 110 states have call successors, (110), 31 states have call predecessors, (110), 29 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2024-11-18 13:56:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1125 transitions. [2024-11-18 13:56:32,351 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1125 transitions. Word has length 101 [2024-11-18 13:56:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:32,352 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1125 transitions. [2024-11-18 13:56:32,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1125 transitions. [2024-11-18 13:56:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 13:56:32,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:32,355 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 13:56:32,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:56:32,559 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,SelfDestructingSolverStorable1 [2024-11-18 13:56:32,560 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:32,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash -650179761, now seen corresponding path program 1 times [2024-11-18 13:56:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555368300] [2024-11-18 13:56:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:32,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555368300] [2024-11-18 13:56:32,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555368300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:32,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548791593] [2024-11-18 13:56:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:32,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:32,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:32,838 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 13:56:32,840 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 13:56:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:33,168 INFO L255 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:33,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:56:33,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:33,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548791593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:33,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:33,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-18 13:56:33,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149555306] [2024-11-18 13:56:33,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:33,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:33,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:33,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:33,251 INFO L87 Difference]: Start difference. First operand 681 states and 1125 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:33,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:33,404 INFO L93 Difference]: Finished difference Result 1377 states and 2277 transitions. [2024-11-18 13:56:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:33,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2024-11-18 13:56:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:33,412 INFO L225 Difference]: With dead ends: 1377 [2024-11-18 13:56:33,412 INFO L226 Difference]: Without dead ends: 706 [2024-11-18 13:56:33,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:33,419 INFO L432 NwaCegarLoop]: 1014 mSDtfsCounter, 89 mSDsluCounter, 4978 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5992 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:33,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5992 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-18 13:56:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 694. [2024-11-18 13:56:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 551 states have (on average 1.67513611615245) internal successors, (923), 571 states have internal predecessors, (923), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2024-11-18 13:56:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1146 transitions. [2024-11-18 13:56:33,460 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1146 transitions. Word has length 103 [2024-11-18 13:56:33,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:33,462 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 1146 transitions. [2024-11-18 13:56:33,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:33,463 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1146 transitions. [2024-11-18 13:56:33,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 13:56:33,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:33,465 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:33,480 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 13:56:33,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:33,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:33,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:33,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1189891736, now seen corresponding path program 1 times [2024-11-18 13:56:33,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:33,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298279278] [2024-11-18 13:56:33,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:33,851 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:33,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:33,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298279278] [2024-11-18 13:56:33,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298279278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:33,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556737601] [2024-11-18 13:56:33,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:33,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:33,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:33,855 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 13:56:33,857 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 13:56:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:34,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:34,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:56:34,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556737601] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:34,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:34,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-18 13:56:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359451533] [2024-11-18 13:56:34,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:34,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:34,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:34,240 INFO L87 Difference]: Start difference. First operand 694 states and 1146 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:34,381 INFO L93 Difference]: Finished difference Result 1397 states and 2308 transitions. [2024-11-18 13:56:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:34,382 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-11-18 13:56:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:34,389 INFO L225 Difference]: With dead ends: 1397 [2024-11-18 13:56:34,389 INFO L226 Difference]: Without dead ends: 715 [2024-11-18 13:56:34,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:34,393 INFO L432 NwaCegarLoop]: 1014 mSDtfsCounter, 100 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5980 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:34,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5980 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-18 13:56:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 694. [2024-11-18 13:56:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 551 states have (on average 1.67513611615245) internal successors, (923), 571 states have internal predecessors, (923), 111 states have call successors, (111), 31 states have call predecessors, (111), 31 states have return successors, (112), 105 states have call predecessors, (112), 108 states have call successors, (112) [2024-11-18 13:56:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1146 transitions. [2024-11-18 13:56:34,431 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1146 transitions. Word has length 104 [2024-11-18 13:56:34,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:34,432 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 1146 transitions. [2024-11-18 13:56:34,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:34,433 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1146 transitions. [2024-11-18 13:56:34,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 13:56:34,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:34,436 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:34,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:56:34,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:34,636 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:34,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash -128803137, now seen corresponding path program 1 times [2024-11-18 13:56:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:34,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491065167] [2024-11-18 13:56:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:34,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:34,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:34,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491065167] [2024-11-18 13:56:34,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491065167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:34,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621058635] [2024-11-18 13:56:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:34,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:34,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:34,736 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 13:56:34,738 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 13:56:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:35,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:35,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:56:35,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:35,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621058635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:35,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:35,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569298397] [2024-11-18 13:56:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:35,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:35,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:35,053 INFO L87 Difference]: Start difference. First operand 694 states and 1146 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:56:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:35,131 INFO L93 Difference]: Finished difference Result 1391 states and 2298 transitions. [2024-11-18 13:56:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:35,132 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2024-11-18 13:56:35,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:35,137 INFO L225 Difference]: With dead ends: 1391 [2024-11-18 13:56:35,137 INFO L226 Difference]: Without dead ends: 705 [2024-11-18 13:56:35,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:35,141 INFO L432 NwaCegarLoop]: 1015 mSDtfsCounter, 12 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:35,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3036 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-18 13:56:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 703. [2024-11-18 13:56:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-18 13:56:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2024-11-18 13:56:35,170 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 88 [2024-11-18 13:56:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:35,171 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2024-11-18 13:56:35,171 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, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:56:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2024-11-18 13:56:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 13:56:35,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:35,175 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:35,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:35,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:35,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:35,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:35,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1200943932, now seen corresponding path program 1 times [2024-11-18 13:56:35,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:35,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324318697] [2024-11-18 13:56:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:35,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:35,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324318697] [2024-11-18 13:56:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324318697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734445104] [2024-11-18 13:56:35,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:35,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:35,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:35,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:35,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:56:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:35,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:35,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:35,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734445104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:35,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-18 13:56:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070442657] [2024-11-18 13:56:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:35,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:35,894 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:36,008 INFO L93 Difference]: Finished difference Result 1406 states and 2311 transitions. [2024-11-18 13:56:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-18 13:56:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:36,014 INFO L225 Difference]: With dead ends: 1406 [2024-11-18 13:56:36,014 INFO L226 Difference]: Without dead ends: 726 [2024-11-18 13:56:36,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:36,018 INFO L432 NwaCegarLoop]: 1014 mSDtfsCounter, 111 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5968 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:36,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5968 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-18 13:56:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 703. [2024-11-18 13:56:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-18 13:56:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2024-11-18 13:56:36,041 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 89 [2024-11-18 13:56:36,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:36,041 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2024-11-18 13:56:36,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:36,042 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2024-11-18 13:56:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 13:56:36,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:36,044 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:36,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:36,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:36,245 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:36,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash 157455253, now seen corresponding path program 1 times [2024-11-18 13:56:36,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:36,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673124139] [2024-11-18 13:56:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:36,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:36,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:36,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673124139] [2024-11-18 13:56:36,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673124139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:36,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947367873] [2024-11-18 13:56:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:36,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:36,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:36,394 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:36,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:56:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:36,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:36,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:56:36,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:36,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947367873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:36,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:36,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:56:36,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524946961] [2024-11-18 13:56:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:36,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:36,784 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:36,968 INFO L93 Difference]: Finished difference Result 1409 states and 2315 transitions. [2024-11-18 13:56:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:36,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2024-11-18 13:56:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:36,975 INFO L225 Difference]: With dead ends: 1409 [2024-11-18 13:56:36,975 INFO L226 Difference]: Without dead ends: 729 [2024-11-18 13:56:36,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:56:36,979 INFO L432 NwaCegarLoop]: 1004 mSDtfsCounter, 95 mSDsluCounter, 5927 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6931 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:36,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6931 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-18 13:56:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 703. [2024-11-18 13:56:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-18 13:56:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2024-11-18 13:56:37,003 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 105 [2024-11-18 13:56:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:37,004 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2024-11-18 13:56:37,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2024-11-18 13:56:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-18 13:56:37,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:37,006 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:37,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:56:37,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:37,208 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:37,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 781478252, now seen corresponding path program 1 times [2024-11-18 13:56:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:37,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634247099] [2024-11-18 13:56:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:37,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:37,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:37,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:37,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634247099] [2024-11-18 13:56:37,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634247099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:37,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764270293] [2024-11-18 13:56:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:37,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:37,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:37,353 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:37,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:56:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:37,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:37,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:56:37,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764270293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:37,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:56:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492237902] [2024-11-18 13:56:37,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:37,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:37,738 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:37,940 INFO L93 Difference]: Finished difference Result 1409 states and 2315 transitions. [2024-11-18 13:56:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2024-11-18 13:56:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:37,947 INFO L225 Difference]: With dead ends: 1409 [2024-11-18 13:56:37,947 INFO L226 Difference]: Without dead ends: 729 [2024-11-18 13:56:37,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:56:37,951 INFO L432 NwaCegarLoop]: 1004 mSDtfsCounter, 105 mSDsluCounter, 5915 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6919 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:37,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6919 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-18 13:56:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 703. [2024-11-18 13:56:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-18 13:56:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2024-11-18 13:56:37,973 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 106 [2024-11-18 13:56:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:37,973 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2024-11-18 13:56:37,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2024-11-18 13:56:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 13:56:37,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:37,975 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:37,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:56:38,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 13:56:38,176 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:38,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1194689565, now seen corresponding path program 1 times [2024-11-18 13:56:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:38,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089073056] [2024-11-18 13:56:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:56:38,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:38,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089073056] [2024-11-18 13:56:38,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089073056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:38,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306199530] [2024-11-18 13:56:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:38,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:38,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:38,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:56:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:38,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:38,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:56:38,663 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:38,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306199530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:38,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:56:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710428784] [2024-11-18 13:56:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:38,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:56:38,665 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:38,832 INFO L93 Difference]: Finished difference Result 1400 states and 2300 transitions. [2024-11-18 13:56:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2024-11-18 13:56:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:38,839 INFO L225 Difference]: With dead ends: 1400 [2024-11-18 13:56:38,839 INFO L226 Difference]: Without dead ends: 720 [2024-11-18 13:56:38,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:56:38,843 INFO L432 NwaCegarLoop]: 1004 mSDtfsCounter, 115 mSDsluCounter, 5903 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:38,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6907 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2024-11-18 13:56:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 703. [2024-11-18 13:56:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.667262969588551) internal successors, (932), 579 states have internal predecessors, (932), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-18 13:56:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1154 transitions. [2024-11-18 13:56:38,865 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1154 transitions. Word has length 91 [2024-11-18 13:56:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:38,865 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1154 transitions. [2024-11-18 13:56:38,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1154 transitions. [2024-11-18 13:56:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-18 13:56:38,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:38,868 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:38,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:56:39,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:39,069 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:39,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash -938060392, now seen corresponding path program 1 times [2024-11-18 13:56:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:39,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495474017] [2024-11-18 13:56:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:39,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:39,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:39,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495474017] [2024-11-18 13:56:39,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495474017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232200625] [2024-11-18 13:56:39,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:39,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:39,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:39,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:39,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:56:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:39,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:39,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:39,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:39,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232200625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:39,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:39,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272211349] [2024-11-18 13:56:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:39,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:39,517 INFO L87 Difference]: Start difference. First operand 703 states and 1154 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:39,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:39,589 INFO L93 Difference]: Finished difference Result 1372 states and 2260 transitions. [2024-11-18 13:56:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:39,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2024-11-18 13:56:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:39,596 INFO L225 Difference]: With dead ends: 1372 [2024-11-18 13:56:39,596 INFO L226 Difference]: Without dead ends: 703 [2024-11-18 13:56:39,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:39,600 INFO L432 NwaCegarLoop]: 1012 mSDtfsCounter, 20 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:39,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3030 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-18 13:56:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2024-11-18 13:56:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 559 states have (on average 1.6583184257602863) internal successors, (927), 579 states have internal predecessors, (927), 111 states have call successors, (111), 32 states have call predecessors, (111), 32 states have return successors, (111), 105 states have call predecessors, (111), 108 states have call successors, (111) [2024-11-18 13:56:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1149 transitions. [2024-11-18 13:56:39,625 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1149 transitions. Word has length 107 [2024-11-18 13:56:39,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:39,625 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1149 transitions. [2024-11-18 13:56:39,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1149 transitions. [2024-11-18 13:56:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-18 13:56:39,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:39,627 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:39,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 13:56:39,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 13:56:39,828 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:39,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:39,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2026866041, now seen corresponding path program 1 times [2024-11-18 13:56:39,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:39,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020946657] [2024-11-18 13:56:39,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:39,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020946657] [2024-11-18 13:56:39,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020946657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004409025] [2024-11-18 13:56:39,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:39,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:39,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:39,917 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:39,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 13:56:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:40,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:40,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-18 13:56:40,246 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:40,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004409025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:40,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:40,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805948763] [2024-11-18 13:56:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:40,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:40,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:40,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:40,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:40,248 INFO L87 Difference]: Start difference. First operand 703 states and 1149 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), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:40,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:40,414 INFO L93 Difference]: Finished difference Result 1401 states and 2300 transitions. [2024-11-18 13:56:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:40,415 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), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2024-11-18 13:56:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:40,420 INFO L225 Difference]: With dead ends: 1401 [2024-11-18 13:56:40,420 INFO L226 Difference]: Without dead ends: 790 [2024-11-18 13:56:40,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:40,424 INFO L432 NwaCegarLoop]: 977 mSDtfsCounter, 171 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:40,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2902 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2024-11-18 13:56:40,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 748. [2024-11-18 13:56:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 603 states have (on average 1.6766169154228856) internal successors, (1011), 623 states have internal predecessors, (1011), 111 states have call successors, (111), 33 states have call predecessors, (111), 33 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2024-11-18 13:56:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1232 transitions. [2024-11-18 13:56:40,448 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1232 transitions. Word has length 108 [2024-11-18 13:56:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:40,448 INFO L471 AbstractCegarLoop]: Abstraction has 748 states and 1232 transitions. [2024-11-18 13:56:40,448 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), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1232 transitions. [2024-11-18 13:56:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 13:56:40,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:40,451 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:40,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 13:56:40,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 13:56:40,656 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:40,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:40,657 INFO L85 PathProgramCache]: Analyzing trace with hash 414078419, now seen corresponding path program 1 times [2024-11-18 13:56:40,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:40,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609434475] [2024-11-18 13:56:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:40,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:40,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:40,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609434475] [2024-11-18 13:56:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609434475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:40,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688696478] [2024-11-18 13:56:40,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:40,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:40,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:40,758 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:40,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 13:56:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:41,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:41,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:56:41,092 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:41,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688696478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:41,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:41,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:56:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269718483] [2024-11-18 13:56:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:41,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:41,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:41,094 INFO L87 Difference]: Start difference. First operand 748 states and 1232 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:41,205 INFO L93 Difference]: Finished difference Result 1394 states and 2287 transitions. [2024-11-18 13:56:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:41,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-11-18 13:56:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:41,211 INFO L225 Difference]: With dead ends: 1394 [2024-11-18 13:56:41,212 INFO L226 Difference]: Without dead ends: 783 [2024-11-18 13:56:41,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:41,215 INFO L432 NwaCegarLoop]: 1015 mSDtfsCounter, 89 mSDsluCounter, 4986 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 6001 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:41,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 6001 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-18 13:56:41,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 761. [2024-11-18 13:56:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6737357259380097) internal successors, (1026), 635 states have internal predecessors, (1026), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-18 13:56:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1251 transitions. [2024-11-18 13:56:41,239 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1251 transitions. Word has length 93 [2024-11-18 13:56:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:41,239 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1251 transitions. [2024-11-18 13:56:41,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1251 transitions. [2024-11-18 13:56:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-18 13:56:41,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:41,241 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:41,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:41,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 13:56:41,446 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:41,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2140948915, now seen corresponding path program 1 times [2024-11-18 13:56:41,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:41,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952474756] [2024-11-18 13:56:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:41,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 13:56:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:41,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952474756] [2024-11-18 13:56:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952474756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:41,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748958811] [2024-11-18 13:56:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:41,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:41,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:41,528 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:41,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 13:56:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:41,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:41,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:41,877 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:56:41,879 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:41,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748958811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:41,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:41,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:56:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800977670] [2024-11-18 13:56:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:41,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:41,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:41,882 INFO L87 Difference]: Start difference. First operand 761 states and 1251 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:41,993 INFO L93 Difference]: Finished difference Result 1403 states and 2301 transitions. [2024-11-18 13:56:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:56:41,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-18 13:56:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:42,000 INFO L225 Difference]: With dead ends: 1403 [2024-11-18 13:56:42,000 INFO L226 Difference]: Without dead ends: 792 [2024-11-18 13:56:42,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:42,005 INFO L432 NwaCegarLoop]: 1015 mSDtfsCounter, 100 mSDsluCounter, 4974 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5989 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:42,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5989 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2024-11-18 13:56:42,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 761. [2024-11-18 13:56:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6737357259380097) internal successors, (1026), 635 states have internal predecessors, (1026), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-18 13:56:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1251 transitions. [2024-11-18 13:56:42,054 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1251 transitions. Word has length 110 [2024-11-18 13:56:42,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:42,054 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1251 transitions. [2024-11-18 13:56:42,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:56:42,055 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1251 transitions. [2024-11-18 13:56:42,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 13:56:42,056 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:42,056 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 13:56:42,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:42,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 13:56:42,258 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:42,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:42,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1291396470, now seen corresponding path program 1 times [2024-11-18 13:56:42,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:42,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613596831] [2024-11-18 13:56:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613596831] [2024-11-18 13:56:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613596831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:42,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998249665] [2024-11-18 13:56:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:42,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:42,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:42,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:42,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 13:56:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:42,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:42,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:56:42,681 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:42,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998249665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:42,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:42,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:56:42,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140133360] [2024-11-18 13:56:42,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:42,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:42,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:42,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:42,684 INFO L87 Difference]: Start difference. First operand 761 states and 1251 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:42,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:42,855 INFO L93 Difference]: Finished difference Result 1406 states and 2304 transitions. [2024-11-18 13:56:42,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:42,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2024-11-18 13:56:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:42,862 INFO L225 Difference]: With dead ends: 1406 [2024-11-18 13:56:42,862 INFO L226 Difference]: Without dead ends: 795 [2024-11-18 13:56:42,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:42,866 INFO L432 NwaCegarLoop]: 1005 mSDtfsCounter, 96 mSDsluCounter, 5936 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6941 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:42,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6941 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:42,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2024-11-18 13:56:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 761. [2024-11-18 13:56:42,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6737357259380097) internal successors, (1026), 635 states have internal predecessors, (1026), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-18 13:56:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1251 transitions. [2024-11-18 13:56:42,894 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1251 transitions. Word has length 94 [2024-11-18 13:56:42,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:42,894 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1251 transitions. [2024-11-18 13:56:42,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1251 transitions. [2024-11-18 13:56:42,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-18 13:56:42,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:42,896 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 13:56:42,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 13:56:43,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:43,098 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:43,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:43,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1773989163, now seen corresponding path program 1 times [2024-11-18 13:56:43,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:43,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842746547] [2024-11-18 13:56:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:43,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:43,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:43,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842746547] [2024-11-18 13:56:43,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842746547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:43,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500289967] [2024-11-18 13:56:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:43,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:43,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:43,192 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:43,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 13:56:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:43,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:56:43,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:43,492 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500289967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:43,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:43,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:56:43,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429436252] [2024-11-18 13:56:43,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:43,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:43,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:43,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:43,494 INFO L87 Difference]: Start difference. First operand 761 states and 1251 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:43,546 INFO L93 Difference]: Finished difference Result 1448 states and 2383 transitions. [2024-11-18 13:56:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:56:43,547 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2024-11-18 13:56:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:43,571 INFO L225 Difference]: With dead ends: 1448 [2024-11-18 13:56:43,571 INFO L226 Difference]: Without dead ends: 761 [2024-11-18 13:56:43,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:56:43,576 INFO L432 NwaCegarLoop]: 1016 mSDtfsCounter, 2 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:43,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3039 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2024-11-18 13:56:43,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2024-11-18 13:56:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6688417618270799) internal successors, (1023), 635 states have internal predecessors, (1023), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-18 13:56:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1248 transitions. [2024-11-18 13:56:43,602 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1248 transitions. Word has length 110 [2024-11-18 13:56:43,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:43,602 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1248 transitions. [2024-11-18 13:56:43,602 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, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:56:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1248 transitions. [2024-11-18 13:56:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 13:56:43,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:43,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:43,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 13:56:43,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 13:56:43,806 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:43,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2101924693, now seen corresponding path program 1 times [2024-11-18 13:56:43,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:43,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266182802] [2024-11-18 13:56:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:43,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:43,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:43,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266182802] [2024-11-18 13:56:43,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266182802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:43,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652662680] [2024-11-18 13:56:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:43,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:43,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:43,880 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:43,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 13:56:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:44,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:56:44,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:56:44,226 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:44,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652662680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:44,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:44,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:56:44,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870221368] [2024-11-18 13:56:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:44,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:56:44,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:56:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:56:44,228 INFO L87 Difference]: Start difference. First operand 761 states and 1248 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:44,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:44,372 INFO L93 Difference]: Finished difference Result 1397 states and 2287 transitions. [2024-11-18 13:56:44,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:56:44,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2024-11-18 13:56:44,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:44,379 INFO L225 Difference]: With dead ends: 1397 [2024-11-18 13:56:44,379 INFO L226 Difference]: Without dead ends: 786 [2024-11-18 13:56:44,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:44,383 INFO L432 NwaCegarLoop]: 1002 mSDtfsCounter, 106 mSDsluCounter, 5909 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6911 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:44,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6911 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2024-11-18 13:56:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 761. [2024-11-18 13:56:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 613 states have (on average 1.6688417618270799) internal successors, (1023), 635 states have internal predecessors, (1023), 112 states have call successors, (112), 33 states have call predecessors, (112), 35 states have return successors, (113), 106 states have call predecessors, (113), 109 states have call successors, (113) [2024-11-18 13:56:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1248 transitions. [2024-11-18 13:56:44,407 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1248 transitions. Word has length 95 [2024-11-18 13:56:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:44,408 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1248 transitions. [2024-11-18 13:56:44,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 13:56:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1248 transitions. [2024-11-18 13:56:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 13:56:44,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:44,410 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:44,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 13:56:44,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 13:56:44,611 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:44,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1571708773, now seen corresponding path program 1 times [2024-11-18 13:56:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970610352] [2024-11-18 13:56:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:44,685 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 13:56:44,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:44,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970610352] [2024-11-18 13:56:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970610352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658558782] [2024-11-18 13:56:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:44,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:44,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:44,688 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:44,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 13:56:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:44,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:56:44,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:56:45,139 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:45,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658558782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:45,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:45,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-18 13:56:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861619675] [2024-11-18 13:56:45,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:45,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:56:45,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:56:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:56:45,141 INFO L87 Difference]: Start difference. First operand 761 states and 1248 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 13:56:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:45,297 INFO L93 Difference]: Finished difference Result 1962 states and 3238 transitions. [2024-11-18 13:56:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:56:45,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 96 [2024-11-18 13:56:45,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:45,308 INFO L225 Difference]: With dead ends: 1962 [2024-11-18 13:56:45,308 INFO L226 Difference]: Without dead ends: 1355 [2024-11-18 13:56:45,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:56:45,314 INFO L432 NwaCegarLoop]: 1091 mSDtfsCounter, 933 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:45,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 2067 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:56:45,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2024-11-18 13:56:45,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1290. [2024-11-18 13:56:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1038 states have (on average 1.670520231213873) internal successors, (1734), 1069 states have internal predecessors, (1734), 194 states have call successors, (194), 56 states have call predecessors, (194), 57 states have return successors, (201), 179 states have call predecessors, (201), 190 states have call successors, (201) [2024-11-18 13:56:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 2129 transitions. [2024-11-18 13:56:45,380 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 2129 transitions. Word has length 96 [2024-11-18 13:56:45,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:45,381 INFO L471 AbstractCegarLoop]: Abstraction has 1290 states and 2129 transitions. [2024-11-18 13:56:45,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 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 13:56:45,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 2129 transitions. [2024-11-18 13:56:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-18 13:56:45,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:45,389 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:45,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 13:56:45,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 13:56:45,590 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:45,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:45,590 INFO L85 PathProgramCache]: Analyzing trace with hash -514772988, now seen corresponding path program 1 times [2024-11-18 13:56:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:45,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271521605] [2024-11-18 13:56:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:45,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-18 13:56:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:45,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271521605] [2024-11-18 13:56:45,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271521605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399381317] [2024-11-18 13:56:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:45,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:45,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:45,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:45,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 13:56:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:46,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:56:46,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-18 13:56:46,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:46,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399381317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:46,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:46,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:56:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093187670] [2024-11-18 13:56:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:46,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:56:46,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:46,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:56:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:46,187 INFO L87 Difference]: Start difference. First operand 1290 states and 2129 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 13:56:46,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:46,823 INFO L93 Difference]: Finished difference Result 2442 states and 4093 transitions. [2024-11-18 13:56:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:56:46,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 221 [2024-11-18 13:56:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:46,831 INFO L225 Difference]: With dead ends: 2442 [2024-11-18 13:56:46,831 INFO L226 Difference]: Without dead ends: 1306 [2024-11-18 13:56:46,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:56:46,837 INFO L432 NwaCegarLoop]: 1006 mSDtfsCounter, 969 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:46,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 2590 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 13:56:46,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2024-11-18 13:56:46,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1306. [2024-11-18 13:56:46,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1052 states have (on average 1.6711026615969582) internal successors, (1758), 1083 states have internal predecessors, (1758), 194 states have call successors, (194), 58 states have call predecessors, (194), 59 states have return successors, (203), 179 states have call predecessors, (203), 190 states have call successors, (203) [2024-11-18 13:56:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 2155 transitions. [2024-11-18 13:56:46,891 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 2155 transitions. Word has length 221 [2024-11-18 13:56:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:46,891 INFO L471 AbstractCegarLoop]: Abstraction has 1306 states and 2155 transitions. [2024-11-18 13:56:46,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 13:56:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 2155 transitions. [2024-11-18 13:56:46,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-18 13:56:46,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:46,899 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:46,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:47,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 13:56:47,100 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:47,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1528639668, now seen corresponding path program 1 times [2024-11-18 13:56:47,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:47,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717446995] [2024-11-18 13:56:47,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:47,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-18 13:56:47,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717446995] [2024-11-18 13:56:47,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717446995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:47,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846633207] [2024-11-18 13:56:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:47,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:47,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:47,241 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:47,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 13:56:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:47,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 2251 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:56:47,639 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 13:56:47,744 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846633207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:47,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:47,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:56:47,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764745019] [2024-11-18 13:56:47,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:47,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:56:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:47,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:56:47,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:56:47,746 INFO L87 Difference]: Start difference. First operand 1306 states and 2155 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-18 13:56:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:50,838 INFO L93 Difference]: Finished difference Result 3843 states and 6373 transitions. [2024-11-18 13:56:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:56:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 224 [2024-11-18 13:56:50,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:50,863 INFO L225 Difference]: With dead ends: 3843 [2024-11-18 13:56:50,864 INFO L226 Difference]: Without dead ends: 2691 [2024-11-18 13:56:50,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:56:50,872 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 2050 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 5344 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 5682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 5344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:50,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 1730 Invalid, 5682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 5344 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 13:56:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2024-11-18 13:56:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2247. [2024-11-18 13:56:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2247 states, 1784 states have (on average 1.6384529147982063) internal successors, (2923), 1826 states have internal predecessors, (2923), 355 states have call successors, (355), 98 states have call predecessors, (355), 107 states have return successors, (429), 336 states have call predecessors, (429), 349 states have call successors, (429) [2024-11-18 13:56:50,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2247 states to 2247 states and 3707 transitions. [2024-11-18 13:56:50,995 INFO L78 Accepts]: Start accepts. Automaton has 2247 states and 3707 transitions. Word has length 224 [2024-11-18 13:56:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:50,995 INFO L471 AbstractCegarLoop]: Abstraction has 2247 states and 3707 transitions. [2024-11-18 13:56:50,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-18 13:56:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2247 states and 3707 transitions. [2024-11-18 13:56:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 13:56:51,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:51,003 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:51,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:51,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:51,204 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:51,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1036670394, now seen corresponding path program 1 times [2024-11-18 13:56:51,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:51,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855180027] [2024-11-18 13:56:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:56:51,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:51,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855180027] [2024-11-18 13:56:51,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855180027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:51,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316719577] [2024-11-18 13:56:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:51,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:51,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:51,316 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:51,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 13:56:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:51,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:56:51,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:51,742 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316719577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:51,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:51,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:56:51,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731410346] [2024-11-18 13:56:51,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:51,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:56:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:56:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:51,744 INFO L87 Difference]: Start difference. First operand 2247 states and 3707 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:56:52,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:52,350 INFO L93 Difference]: Finished difference Result 4372 states and 7381 transitions. [2024-11-18 13:56:52,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:56:52,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2024-11-18 13:56:52,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:52,370 INFO L225 Difference]: With dead ends: 4372 [2024-11-18 13:56:52,371 INFO L226 Difference]: Without dead ends: 2279 [2024-11-18 13:56:52,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:56:52,393 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 960 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:52,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 2587 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:56:52,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2024-11-18 13:56:52,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2279. [2024-11-18 13:56:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2279 states, 1812 states have (on average 1.6396247240618103) internal successors, (2971), 1854 states have internal predecessors, (2971), 355 states have call successors, (355), 102 states have call predecessors, (355), 111 states have return successors, (433), 336 states have call predecessors, (433), 349 states have call successors, (433) [2024-11-18 13:56:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3759 transitions. [2024-11-18 13:56:52,503 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3759 transitions. Word has length 153 [2024-11-18 13:56:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:52,504 INFO L471 AbstractCegarLoop]: Abstraction has 2279 states and 3759 transitions. [2024-11-18 13:56:52,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:56:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3759 transitions. [2024-11-18 13:56:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-18 13:56:52,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:52,547 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:56:52,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 13:56:52,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:52,748 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:52,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1677042236, now seen corresponding path program 1 times [2024-11-18 13:56:52,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:52,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633486864] [2024-11-18 13:56:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-18 13:56:52,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633486864] [2024-11-18 13:56:52,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633486864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:52,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440634595] [2024-11-18 13:56:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:52,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:52,900 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:52,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 13:56:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:53,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:56:53,342 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-18 13:56:53,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:53,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440634595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:53,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:53,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:56:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35932138] [2024-11-18 13:56:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:53,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:56:53,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:53,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:56:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:53,450 INFO L87 Difference]: Start difference. First operand 2279 states and 3759 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 13:56:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:53,977 INFO L93 Difference]: Finished difference Result 4436 states and 7473 transitions. [2024-11-18 13:56:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:56:53,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 230 [2024-11-18 13:56:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:53,995 INFO L225 Difference]: With dead ends: 4436 [2024-11-18 13:56:53,995 INFO L226 Difference]: Without dead ends: 2311 [2024-11-18 13:56:54,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:56:54,008 INFO L432 NwaCegarLoop]: 1000 mSDtfsCounter, 946 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:54,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 2584 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:56:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2024-11-18 13:56:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2311. [2024-11-18 13:56:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 1840 states have (on average 1.6407608695652174) internal successors, (3019), 1882 states have internal predecessors, (3019), 355 states have call successors, (355), 106 states have call predecessors, (355), 115 states have return successors, (437), 336 states have call predecessors, (437), 349 states have call successors, (437) [2024-11-18 13:56:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3811 transitions. [2024-11-18 13:56:54,122 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3811 transitions. Word has length 230 [2024-11-18 13:56:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:54,123 INFO L471 AbstractCegarLoop]: Abstraction has 2311 states and 3811 transitions. [2024-11-18 13:56:54,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-18 13:56:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3811 transitions. [2024-11-18 13:56:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 13:56:54,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:54,131 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:54,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 13:56:54,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:54,332 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:54,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1600032590, now seen corresponding path program 1 times [2024-11-18 13:56:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:54,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688706878] [2024-11-18 13:56:54,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:56:54,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688706878] [2024-11-18 13:56:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688706878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:54,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261287349] [2024-11-18 13:56:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:54,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:54,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:54,442 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:54,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 13:56:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:54,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:56:54,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:56:54,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:54,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261287349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:54,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:54,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:56:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537885467] [2024-11-18 13:56:54,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:54,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:56:54,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:56:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:56:54,861 INFO L87 Difference]: Start difference. First operand 2311 states and 3811 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:56:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:55,380 INFO L93 Difference]: Finished difference Result 4500 states and 7565 transitions. [2024-11-18 13:56:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:56:55,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2024-11-18 13:56:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:55,399 INFO L225 Difference]: With dead ends: 4500 [2024-11-18 13:56:55,400 INFO L226 Difference]: Without dead ends: 2343 [2024-11-18 13:56:55,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:56:55,411 INFO L432 NwaCegarLoop]: 997 mSDtfsCounter, 936 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:55,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2581 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:56:55,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2024-11-18 13:56:55,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 2343. [2024-11-18 13:56:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 1868 states have (on average 1.64186295503212) internal successors, (3067), 1910 states have internal predecessors, (3067), 355 states have call successors, (355), 110 states have call predecessors, (355), 119 states have return successors, (441), 336 states have call predecessors, (441), 349 states have call successors, (441) [2024-11-18 13:56:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3863 transitions. [2024-11-18 13:56:55,502 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3863 transitions. Word has length 157 [2024-11-18 13:56:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:55,503 INFO L471 AbstractCegarLoop]: Abstraction has 2343 states and 3863 transitions. [2024-11-18 13:56:55,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:56:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3863 transitions. [2024-11-18 13:56:55,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 13:56:55,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:55,509 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:55,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-18 13:56:55,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:55,710 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:55,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:55,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1364937312, now seen corresponding path program 1 times [2024-11-18 13:56:55,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:55,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840575650] [2024-11-18 13:56:55,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 13:56:55,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:55,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840575650] [2024-11-18 13:56:55,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840575650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:55,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098046983] [2024-11-18 13:56:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:55,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:55,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:55,838 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:55,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 13:56:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:56,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:56:56,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:56:56,238 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:56:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098046983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:56:56,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:56:56,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 13:56:56,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861152053] [2024-11-18 13:56:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:56:56,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:56:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:56:56,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:56:56,241 INFO L87 Difference]: Start difference. First operand 2343 states and 3863 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 13:56:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:56:56,346 INFO L93 Difference]: Finished difference Result 4663 states and 7706 transitions. [2024-11-18 13:56:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:56:56,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2024-11-18 13:56:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:56:56,362 INFO L225 Difference]: With dead ends: 4663 [2024-11-18 13:56:56,363 INFO L226 Difference]: Without dead ends: 2308 [2024-11-18 13:56:56,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 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 13:56:56,373 INFO L432 NwaCegarLoop]: 1013 mSDtfsCounter, 7 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:56:56,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3031 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:56:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2024-11-18 13:56:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2308. [2024-11-18 13:56:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 1836 states have (on average 1.6328976034858387) internal successors, (2998), 1876 states have internal predecessors, (2998), 354 states have call successors, (354), 110 states have call predecessors, (354), 117 states have return successors, (438), 335 states have call predecessors, (438), 348 states have call successors, (438) [2024-11-18 13:56:56,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 3790 transitions. [2024-11-18 13:56:56,458 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 3790 transitions. Word has length 159 [2024-11-18 13:56:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:56:56,459 INFO L471 AbstractCegarLoop]: Abstraction has 2308 states and 3790 transitions. [2024-11-18 13:56:56,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 13:56:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 3790 transitions. [2024-11-18 13:56:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-18 13:56:56,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:56:56,466 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 13:56:56,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-18 13:56:56,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:56,667 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:56:56,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:56:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1591835161, now seen corresponding path program 1 times [2024-11-18 13:56:56,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:56:56,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257237955] [2024-11-18 13:56:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:56:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-18 13:56:56,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:56:56,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257237955] [2024-11-18 13:56:56,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257237955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:56:56,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483454706] [2024-11-18 13:56:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:56:56,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:56:56,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:56:56,882 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:56:56,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 13:56:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:56:57,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 2255 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-18 13:56:57,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:56:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 105 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-18 13:56:57,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:56:57,825 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-18 13:56:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483454706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:56:57,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:56:57,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2024-11-18 13:56:57,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076271105] [2024-11-18 13:56:57,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:56:57,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 13:56:57,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:56:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 13:56:57,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:56:57,828 INFO L87 Difference]: Start difference. First operand 2308 states and 3790 transitions. Second operand has 12 states, 11 states have (on average 21.363636363636363) internal successors, (235), 11 states have internal predecessors, (235), 6 states have call successors, (58), 5 states have call predecessors, (58), 7 states have return successors, (55), 6 states have call predecessors, (55), 6 states have call successors, (55) [2024-11-18 13:57:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:02,017 INFO L93 Difference]: Finished difference Result 4828 states and 7914 transitions. [2024-11-18 13:57:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 13:57:02,018 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 21.363636363636363) internal successors, (235), 11 states have internal predecessors, (235), 6 states have call successors, (58), 5 states have call predecessors, (58), 7 states have return successors, (55), 6 states have call predecessors, (55), 6 states have call successors, (55) Word has length 238 [2024-11-18 13:57:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:02,038 INFO L225 Difference]: With dead ends: 4828 [2024-11-18 13:57:02,038 INFO L226 Difference]: Without dead ends: 2537 [2024-11-18 13:57:02,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 473 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2024-11-18 13:57:02,049 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 2485 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 9313 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 9656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 9313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:02,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2585 Valid, 3622 Invalid, 9656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [343 Valid, 9313 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-18 13:57:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2024-11-18 13:57:02,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2299. [2024-11-18 13:57:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1829 states have (on average 1.6293056314926189) internal successors, (2980), 1867 states have internal predecessors, (2980), 352 states have call successors, (352), 110 states have call predecessors, (352), 117 states have return successors, (431), 335 states have call predecessors, (431), 346 states have call successors, (431) [2024-11-18 13:57:02,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3763 transitions. [2024-11-18 13:57:02,139 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3763 transitions. Word has length 238 [2024-11-18 13:57:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:02,139 INFO L471 AbstractCegarLoop]: Abstraction has 2299 states and 3763 transitions. [2024-11-18 13:57:02,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 21.363636363636363) internal successors, (235), 11 states have internal predecessors, (235), 6 states have call successors, (58), 5 states have call predecessors, (58), 7 states have return successors, (55), 6 states have call predecessors, (55), 6 states have call successors, (55) [2024-11-18 13:57:02,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3763 transitions. [2024-11-18 13:57:02,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 13:57:02,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:02,145 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:57:02,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-18 13:57:02,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:57:02,347 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:02,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash 254974530, now seen corresponding path program 1 times [2024-11-18 13:57:02,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:02,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335023607] [2024-11-18 13:57:02,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:57:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335023607] [2024-11-18 13:57:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335023607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:57:02,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:57:02,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:57:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323037423] [2024-11-18 13:57:02,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:57:02,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:57:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:02,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:57:02,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:57:02,513 INFO L87 Difference]: Start difference. First operand 2299 states and 3763 transitions. Second operand has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:57:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:02,656 INFO L93 Difference]: Finished difference Result 4540 states and 7442 transitions. [2024-11-18 13:57:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:57:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2024-11-18 13:57:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:02,677 INFO L225 Difference]: With dead ends: 4540 [2024-11-18 13:57:02,678 INFO L226 Difference]: Without dead ends: 2349 [2024-11-18 13:57:02,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 13:57:02,687 INFO L432 NwaCegarLoop]: 1011 mSDtfsCounter, 126 mSDsluCounter, 4932 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5943 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:02,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5943 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:57:02,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2024-11-18 13:57:02,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2299. [2024-11-18 13:57:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 1829 states have (on average 1.6293056314926189) internal successors, (2980), 1867 states have internal predecessors, (2980), 352 states have call successors, (352), 110 states have call predecessors, (352), 117 states have return successors, (431), 335 states have call predecessors, (431), 346 states have call successors, (431) [2024-11-18 13:57:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 3763 transitions. [2024-11-18 13:57:02,822 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 3763 transitions. Word has length 161 [2024-11-18 13:57:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:02,823 INFO L471 AbstractCegarLoop]: Abstraction has 2299 states and 3763 transitions. [2024-11-18 13:57:02,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:57:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 3763 transitions. [2024-11-18 13:57:02,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-18 13:57:02,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:02,829 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:57:02,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-18 13:57:02,829 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:02,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1928806656, now seen corresponding path program 1 times [2024-11-18 13:57:02,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545856614] [2024-11-18 13:57:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-18 13:57:02,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545856614] [2024-11-18 13:57:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545856614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:57:02,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:57:02,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:57:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341765482] [2024-11-18 13:57:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:57:02,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:57:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:57:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:57:02,954 INFO L87 Difference]: Start difference. First operand 2299 states and 3763 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 13:57:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:03,048 INFO L93 Difference]: Finished difference Result 4553 states and 7469 transitions. [2024-11-18 13:57:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:57:03,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 240 [2024-11-18 13:57:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:03,068 INFO L225 Difference]: With dead ends: 4553 [2024-11-18 13:57:03,068 INFO L226 Difference]: Without dead ends: 2257 [2024-11-18 13:57:03,076 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 13:57:03,077 INFO L432 NwaCegarLoop]: 1012 mSDtfsCounter, 8 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:03,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3030 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:57:03,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-18 13:57:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-18 13:57:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 1790 states have (on average 1.6240223463687151) internal successors, (2907), 1826 states have internal predecessors, (2907), 351 states have call successors, (351), 110 states have call predecessors, (351), 115 states have return successors, (428), 334 states have call predecessors, (428), 345 states have call successors, (428) [2024-11-18 13:57:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3686 transitions. [2024-11-18 13:57:03,155 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3686 transitions. Word has length 240 [2024-11-18 13:57:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:03,156 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3686 transitions. [2024-11-18 13:57:03,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-18 13:57:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3686 transitions. [2024-11-18 13:57:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-18 13:57:03,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:03,161 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:57:03,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-18 13:57:03,161 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:03,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:03,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1769150649, now seen corresponding path program 1 times [2024-11-18 13:57:03,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:03,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243018995] [2024-11-18 13:57:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:03,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:03,640 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-18 13:57:03,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243018995] [2024-11-18 13:57:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243018995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:57:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24813366] [2024-11-18 13:57:03,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:03,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:57:03,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:57:03,643 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:57:03,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 13:57:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:04,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 2265 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:57:04,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:57:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-18 13:57:04,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:57:04,549 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-18 13:57:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24813366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:57:04,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:57:04,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 15 [2024-11-18 13:57:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360054691] [2024-11-18 13:57:04,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:57:04,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 13:57:04,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 13:57:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:57:04,552 INFO L87 Difference]: Start difference. First operand 2257 states and 3686 transitions. Second operand has 15 states, 15 states have (on average 13.933333333333334) internal successors, (209), 13 states have internal predecessors, (209), 8 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 8 states have call successors, (48) [2024-11-18 13:57:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:24,386 INFO L93 Difference]: Finished difference Result 31256 states and 58853 transitions. [2024-11-18 13:57:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-18 13:57:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.933333333333334) internal successors, (209), 13 states have internal predecessors, (209), 8 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 8 states have call successors, (48) Word has length 241 [2024-11-18 13:57:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:24,661 INFO L225 Difference]: With dead ends: 31256 [2024-11-18 13:57:24,661 INFO L226 Difference]: Without dead ends: 29045 [2024-11-18 13:57:24,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 520 SyntacticMatches, 5 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5023 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1572, Invalid=11768, Unknown=0, NotChecked=0, Total=13340 [2024-11-18 13:57:24,717 INFO L432 NwaCegarLoop]: 1328 mSDtfsCounter, 14470 mSDsluCounter, 9154 mSDsCounter, 0 mSdLazyCounter, 33246 mSolverCounterSat, 5340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14499 SdHoareTripleChecker+Valid, 10482 SdHoareTripleChecker+Invalid, 38586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5340 IncrementalHoareTripleChecker+Valid, 33246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:24,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14499 Valid, 10482 Invalid, 38586 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5340 Valid, 33246 Invalid, 0 Unknown, 0 Unchecked, 16.9s Time] [2024-11-18 13:57:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29045 states. [2024-11-18 13:57:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29045 to 22571. [2024-11-18 13:57:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22571 states, 17289 states have (on average 1.5605298166464225) internal successors, (26980), 17851 states have internal predecessors, (26980), 3746 states have call successors, (3746), 1005 states have call predecessors, (3746), 1535 states have return successors, (8501), 3864 states have call predecessors, (8501), 3720 states have call successors, (8501) [2024-11-18 13:57:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22571 states to 22571 states and 39227 transitions. [2024-11-18 13:57:26,579 INFO L78 Accepts]: Start accepts. Automaton has 22571 states and 39227 transitions. Word has length 241 [2024-11-18 13:57:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:26,580 INFO L471 AbstractCegarLoop]: Abstraction has 22571 states and 39227 transitions. [2024-11-18 13:57:26,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.933333333333334) internal successors, (209), 13 states have internal predecessors, (209), 8 states have call successors, (50), 6 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 8 states have call successors, (48) [2024-11-18 13:57:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 22571 states and 39227 transitions. [2024-11-18 13:57:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 13:57:26,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:26,602 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:57:26,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 13:57:26,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 13:57:26,803 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:26,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1538668896, now seen corresponding path program 1 times [2024-11-18 13:57:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873971071] [2024-11-18 13:57:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:57:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873971071] [2024-11-18 13:57:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873971071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:57:26,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370059644] [2024-11-18 13:57:26,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:26,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:57:26,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:57:26,977 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:57:26,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 13:57:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:27,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:57:27,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:57:27,360 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 13:57:27,361 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:57:27,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370059644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:57:27,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:57:27,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-18 13:57:27,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781199023] [2024-11-18 13:57:27,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:57:27,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:57:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:27,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:57:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:57:27,363 INFO L87 Difference]: Start difference. First operand 22571 states and 39227 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 13:57:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:28,898 INFO L93 Difference]: Finished difference Result 44338 states and 76408 transitions. [2024-11-18 13:57:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:57:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2024-11-18 13:57:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:29,051 INFO L225 Difference]: With dead ends: 44338 [2024-11-18 13:57:29,052 INFO L226 Difference]: Without dead ends: 21837 [2024-11-18 13:57:29,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:57:29,189 INFO L432 NwaCegarLoop]: 1014 mSDtfsCounter, 46 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:29,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2981 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:57:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21837 states. [2024-11-18 13:57:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21837 to 21837. [2024-11-18 13:57:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21837 states, 16656 states have (on average 1.5545749279538905) internal successors, (25893), 17216 states have internal predecessors, (25893), 3687 states have call successors, (3687), 966 states have call predecessors, (3687), 1493 states have return successors, (7662), 3804 states have call predecessors, (7662), 3661 states have call successors, (7662) [2024-11-18 13:57:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21837 states to 21837 states and 37242 transitions. [2024-11-18 13:57:30,819 INFO L78 Accepts]: Start accepts. Automaton has 21837 states and 37242 transitions. Word has length 163 [2024-11-18 13:57:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:30,819 INFO L471 AbstractCegarLoop]: Abstraction has 21837 states and 37242 transitions. [2024-11-18 13:57:30,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 13:57:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 21837 states and 37242 transitions. [2024-11-18 13:57:30,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-18 13:57:30,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:30,831 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-18 13:57:30,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-18 13:57:31,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-18 13:57:31,033 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:31,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:31,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1502925545, now seen corresponding path program 1 times [2024-11-18 13:57:31,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:31,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81036300] [2024-11-18 13:57:31,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:31,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 13:57:31,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81036300] [2024-11-18 13:57:31,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81036300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:57:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910574895] [2024-11-18 13:57:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:31,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:57:31,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:57:31,602 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:57:31,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-18 13:57:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:31,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:57:31,977 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:57:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:57:32,043 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:57:32,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910574895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:57:32,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:57:32,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-18 13:57:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189574760] [2024-11-18 13:57:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:57:32,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:57:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:57:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:57:32,048 INFO L87 Difference]: Start difference. First operand 21837 states and 37242 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:57:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:33,156 INFO L93 Difference]: Finished difference Result 43819 states and 76178 transitions. [2024-11-18 13:57:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:57:33,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2024-11-18 13:57:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:33,312 INFO L225 Difference]: With dead ends: 43819 [2024-11-18 13:57:33,312 INFO L226 Difference]: Without dead ends: 22053 [2024-11-18 13:57:33,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:57:33,500 INFO L432 NwaCegarLoop]: 1025 mSDtfsCounter, 0 mSDsluCounter, 5106 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6131 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:33,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6131 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:57:33,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22053 states. [2024-11-18 13:57:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22053 to 21999. [2024-11-18 13:57:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21999 states, 16782 states have (on average 1.5504111548087236) internal successors, (26019), 17360 states have internal predecessors, (26019), 3687 states have call successors, (3687), 966 states have call predecessors, (3687), 1529 states have return successors, (7722), 3822 states have call predecessors, (7722), 3661 states have call successors, (7722) [2024-11-18 13:57:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21999 states to 21999 states and 37428 transitions. [2024-11-18 13:57:35,092 INFO L78 Accepts]: Start accepts. Automaton has 21999 states and 37428 transitions. Word has length 170 [2024-11-18 13:57:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:57:35,096 INFO L471 AbstractCegarLoop]: Abstraction has 21999 states and 37428 transitions. [2024-11-18 13:57:35,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 6 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:57:35,096 INFO L276 IsEmpty]: Start isEmpty. Operand 21999 states and 37428 transitions. [2024-11-18 13:57:35,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 13:57:35,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:57:35,106 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:57:35,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-18 13:57:35,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-18 13:57:35,307 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:57:35,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:57:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -283150879, now seen corresponding path program 1 times [2024-11-18 13:57:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:57:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33037892] [2024-11-18 13:57:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:57:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:57:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:57:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 13:57:35,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:57:35,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33037892] [2024-11-18 13:57:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33037892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:57:35,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:57:35,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:57:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830520330] [2024-11-18 13:57:35,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:57:35,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:57:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:57:35,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:57:35,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:57:35,448 INFO L87 Difference]: Start difference. First operand 21999 states and 37428 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-18 13:57:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:57:39,663 INFO L93 Difference]: Finished difference Result 55060 states and 95181 transitions. [2024-11-18 13:57:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:57:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 173 [2024-11-18 13:57:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:57:39,900 INFO L225 Difference]: With dead ends: 55060 [2024-11-18 13:57:39,901 INFO L226 Difference]: Without dead ends: 33138 [2024-11-18 13:57:40,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:57:40,052 INFO L432 NwaCegarLoop]: 666 mSDtfsCounter, 2319 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 3399 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 3399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:57:40,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 1498 Invalid, 3928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 3399 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-18 13:57:40,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33138 states.