./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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 0.3.0-?-e2fb8be-m [2025-03-08 05:21:26,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:21:26,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:21:26,954 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:21:26,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:21:26,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:21:26,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:21:26,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:21:26,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:21:26,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:21:26,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:21:26,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:21:26,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:21:26,973 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:21:26,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:21:26,973 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:21:26,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:21:26,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:21:26,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:21:26,974 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 [2025-03-08 05:21:27,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:21:27,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:21:27,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:21:27,231 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:21:27,231 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:21:27,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2025-03-08 05:21:28,432 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f506225e/ee5ef500c55b416480adb7d3daf21267/FLAG626bd0944 [2025-03-08 05:21:28,790 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:21:28,792 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2025-03-08 05:21:28,816 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f506225e/ee5ef500c55b416480adb7d3daf21267/FLAG626bd0944 [2025-03-08 05:21:28,831 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f506225e/ee5ef500c55b416480adb7d3daf21267 [2025-03-08 05:21:28,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:21:28,835 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:21:28,836 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:21:28,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:21:28,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:21:28,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:21:28" (1/1) ... [2025-03-08 05:21:28,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5766f10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:28, skipping insertion in model container [2025-03-08 05:21:28,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:21:28" (1/1) ... [2025-03-08 05:21:28,886 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:21:29,010 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] [2025-03-08 05:21:29,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:21:29,269 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:21:29,274 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2025-03-08 05:21:29,275 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [57] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [160] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [251] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [604] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1271] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1391] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1426] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1792] [2025-03-08 05:21:29,276 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3453] [2025-03-08 05:21:29,279 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] [2025-03-08 05:21:29,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:21:29,391 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:21:29,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29 WrapperNode [2025-03-08 05:21:29,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:21:29,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:21:29,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:21:29,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:21:29,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,452 INFO L138 Inliner]: procedures = 97, calls = 354, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 934 [2025-03-08 05:21:29,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:21:29,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:21:29,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:21:29,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:21:29,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,490 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]. [2025-03-08 05:21:29,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,506 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,510 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,513 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:21:29,533 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:21:29,533 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:21:29,533 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:21:29,534 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (1/1) ... [2025-03-08 05:21:29,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:21:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:29,559 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) [2025-03-08 05:21:29,562 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 [2025-03-08 05:21:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-08 05:21:29,580 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-08 05:21:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2025-03-08 05:21:29,580 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2025-03-08 05:21:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-08 05:21:29,580 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-08 05:21:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-08 05:21:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-08 05:21:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:21:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:21:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-08 05:21:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-08 05:21:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-08 05:21:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-08 05:21:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-08 05:21:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-08 05:21:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-08 05:21:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-08 05:21:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-08 05:21:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-08 05:21:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-08 05:21:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-08 05:21:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-08 05:21:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-08 05:21:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-08 05:21:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-08 05:21:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-08 05:21:29,583 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 05:21:29,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-08 05:21:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:21:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-08 05:21:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-08 05:21:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-08 05:21:29,584 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-08 05:21:29,744 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:21:29,747 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:21:29,809 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2737-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~25#1; [2025-03-08 05:21:29,810 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: #res#1 := ~retValue_acc~26#1; [2025-03-08 05:21:29,813 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2093: #res := ~retValue_acc~17; [2025-03-08 05:21:29,833 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1310: #res := ~retValue_acc~5; [2025-03-08 05:21:29,933 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3430: #res := ~retValue_acc~29; [2025-03-08 05:21:29,950 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3441: #res := ~retValue_acc~30; [2025-03-08 05:21:30,002 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2618-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~22#1; [2025-03-08 05:21:30,002 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2647: #res#1 := ~retValue_acc~23#1; [2025-03-08 05:21:30,002 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2681-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~24#1; [2025-03-08 05:21:30,010 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2810: #res := ~retValue_acc~28; [2025-03-08 05:21:30,147 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2578: #res := ~retValue_acc~21; [2025-03-08 05:21:30,192 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2050-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~15#1; [2025-03-08 05:21:30,241 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2213-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-08 05:21:30,241 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2226-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-08 05:21:30,250 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1268: #res := ~retValue_acc~4; [2025-03-08 05:21:30,274 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1388: #res := ~retValue_acc~7; [2025-03-08 05:21:30,276 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1868: #res := ~retValue_acc~13; [2025-03-08 05:21:30,278 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2041: #res := ~retValue_acc~14; [2025-03-08 05:21:30,381 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1349: #res := ~retValue_acc~6; [2025-03-08 05:21:30,396 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2084: #res := ~retValue_acc~16; [2025-03-08 05:21:30,427 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2133-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-03-08 05:21:30,472 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L957: #res := ~retValue_acc~3; [2025-03-08 05:21:30,525 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L601-1: main_#res#1 := main_~retValue_acc~1#1; [2025-03-08 05:21:30,526 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1423-1: valid_product_#res#1 := valid_product_~retValue_acc~9#1; [2025-03-08 05:21:30,534 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L721: #res := ~retValue_acc~2; [2025-03-08 05:21:30,623 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2796-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~27#1; [2025-03-08 05:21:30,740 INFO L? ?]: Removed 497 outVars from TransFormulas that were not future-live. [2025-03-08 05:21:30,740 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:21:30,764 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:21:30,764 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:21:30,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:21:30 BoogieIcfgContainer [2025-03-08 05:21:30,765 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:21:30,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:21:30,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:21:30,770 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:21:30,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:21:28" (1/3) ... [2025-03-08 05:21:30,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2432f911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:21:30, skipping insertion in model container [2025-03-08 05:21:30,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:21:29" (2/3) ... [2025-03-08 05:21:30,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2432f911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:21:30, skipping insertion in model container [2025-03-08 05:21:30,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:21:30" (3/3) ... [2025-03-08 05:21:30,772 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2025-03-08 05:21:30,781 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:21:30,784 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product32.cil.c that has 30 procedures, 631 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-08 05:21:30,839 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:21:30,847 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;@13927543, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:21:30,847 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:21:30,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 631 states, 490 states have (on average 1.6734693877551021) internal successors, (820), 510 states have internal predecessors, (820), 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) [2025-03-08 05:21:30,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 05:21:30,867 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:30,868 INFO L218 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] [2025-03-08 05:21:30,868 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:30,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1444902287, now seen corresponding path program 1 times [2025-03-08 05:21:30,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:30,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601019328] [2025-03-08 05:21:30,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:30,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:30,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 05:21:31,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 05:21:31,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:31,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:21:31,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:31,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601019328] [2025-03-08 05:21:31,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601019328] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:31,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594820630] [2025-03-08 05:21:31,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:31,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:31,341 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) [2025-03-08 05:21:31,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:21:31,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 05:21:31,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 05:21:31,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:31,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:31,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:21:31,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:21:31,679 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594820630] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:31,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:31,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:21:31,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915138914] [2025-03-08 05:21:31,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:31,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:31,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:31,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:31,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:21:31,701 INFO L87 Difference]: Start difference. First operand has 631 states, 490 states have (on average 1.6734693877551021) internal successors, (820), 510 states have internal predecessors, (820), 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) [2025-03-08 05:21:31,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:31,870 INFO L93 Difference]: Finished difference Result 1261 states and 2096 transitions. [2025-03-08 05:21:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:31,873 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 [2025-03-08 05:21:31,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:31,891 INFO L225 Difference]: With dead ends: 1261 [2025-03-08 05:21:31,893 INFO L226 Difference]: Without dead ends: 630 [2025-03-08 05:21:31,901 INFO L434 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 [2025-03-08 05:21:31,906 INFO L435 NwaCegarLoop]: 1019 mSDtfsCounter, 17 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:31,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3049 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2025-03-08 05:21:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2025-03-08 05:21:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 491 states have (on average 1.6659877800407332) internal successors, (818), 509 states have internal predecessors, (818), 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) [2025-03-08 05:21:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1035 transitions. [2025-03-08 05:21:32,003 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1035 transitions. Word has length 83 [2025-03-08 05:21:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:32,003 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 1035 transitions. [2025-03-08 05:21:32,003 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) [2025-03-08 05:21:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1035 transitions. [2025-03-08 05:21:32,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-08 05:21:32,010 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:32,011 INFO L218 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] [2025-03-08 05:21:32,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 05:21:32,213 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 [2025-03-08 05:21:32,213 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:32,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash 895921298, now seen corresponding path program 1 times [2025-03-08 05:21:32,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:32,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526800268] [2025-03-08 05:21:32,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:32,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:32,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 05:21:32,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 05:21:32,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:32,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:32,548 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:21:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:32,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526800268] [2025-03-08 05:21:32,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526800268] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:32,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871419940] [2025-03-08 05:21:32,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:32,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:32,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:32,551 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) [2025-03-08 05:21:32,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:21:32,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-08 05:21:32,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-08 05:21:32,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:32,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:32,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:21:32,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:21:32,876 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:32,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871419940] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:32,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:32,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-08 05:21:32,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114974301] [2025-03-08 05:21:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:32,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:32,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:32,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:32,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:21:32,881 INFO L87 Difference]: Start difference. First operand 630 states and 1035 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) [2025-03-08 05:21:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:33,139 INFO L93 Difference]: Finished difference Result 1313 states and 2174 transitions. [2025-03-08 05:21:33,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:33,139 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 [2025-03-08 05:21:33,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:33,147 INFO L225 Difference]: With dead ends: 1313 [2025-03-08 05:21:33,147 INFO L226 Difference]: Without dead ends: 693 [2025-03-08 05:21:33,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:21:33,151 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 122 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2911 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 [2025-03-08 05:21:33,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2911 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 05:21:33,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2025-03-08 05:21:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 675. [2025-03-08 05:21:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 535 states have (on average 1.685981308411215) internal successors, (902), 553 states have internal predecessors, (902), 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) [2025-03-08 05:21:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1119 transitions. [2025-03-08 05:21:33,213 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1119 transitions. Word has length 101 [2025-03-08 05:21:33,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:33,213 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1119 transitions. [2025-03-08 05:21:33,213 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) [2025-03-08 05:21:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1119 transitions. [2025-03-08 05:21:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-08 05:21:33,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:33,216 INFO L218 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] [2025-03-08 05:21:33,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:33,420 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 [2025-03-08 05:21:33,420 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:33,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:33,421 INFO L85 PathProgramCache]: Analyzing trace with hash 355429628, now seen corresponding path program 1 times [2025-03-08 05:21:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861719913] [2025-03-08 05:21:33,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:33,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 05:21:33,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 05:21:33,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:33,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:21:33,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:33,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861719913] [2025-03-08 05:21:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861719913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:33,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237658025] [2025-03-08 05:21:33,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:33,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:33,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:33,607 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) [2025-03-08 05:21:33,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:21:33,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-08 05:21:33,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-08 05:21:33,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:33,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:33,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:21:33,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:21:33,898 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237658025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:33,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:33,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-08 05:21:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882445507] [2025-03-08 05:21:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:33,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:33,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:33,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:33,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:21:33,899 INFO L87 Difference]: Start difference. First operand 675 states and 1119 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) [2025-03-08 05:21:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:34,005 INFO L93 Difference]: Finished difference Result 1365 states and 2265 transitions. [2025-03-08 05:21:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:21:34,006 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 [2025-03-08 05:21:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:34,011 INFO L225 Difference]: With dead ends: 1365 [2025-03-08 05:21:34,012 INFO L226 Difference]: Without dead ends: 700 [2025-03-08 05:21:34,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:21:34,015 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 89 mSDsluCounter, 4951 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5960 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:34,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5960 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:34,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2025-03-08 05:21:34,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 688. [2025-03-08 05:21:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 545 states have (on average 1.6825688073394496) internal successors, (917), 565 states have internal predecessors, (917), 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) [2025-03-08 05:21:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1140 transitions. [2025-03-08 05:21:34,052 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1140 transitions. Word has length 103 [2025-03-08 05:21:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:34,053 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1140 transitions. [2025-03-08 05:21:34,053 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) [2025-03-08 05:21:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1140 transitions. [2025-03-08 05:21:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-08 05:21:34,059 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:34,059 INFO L218 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] [2025-03-08 05:21:34,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:34,263 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 [2025-03-08 05:21:34,263 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:34,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash 445851889, now seen corresponding path program 1 times [2025-03-08 05:21:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:34,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354602034] [2025-03-08 05:21:34,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:34,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 05:21:34,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 05:21:34,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:34,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:34,340 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:21:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354602034] [2025-03-08 05:21:34,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354602034] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223798364] [2025-03-08 05:21:34,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:34,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:34,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:34,343 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) [2025-03-08 05:21:34,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:21:34,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-08 05:21:34,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-08 05:21:34,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:34,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:34,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:21:34,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 05:21:34,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223798364] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:21:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911650469] [2025-03-08 05:21:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:34,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:34,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:34,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:21:34,593 INFO L87 Difference]: Start difference. First operand 688 states and 1140 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-08 05:21:34,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:34,664 INFO L93 Difference]: Finished difference Result 1379 states and 2286 transitions. [2025-03-08 05:21:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:34,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2025-03-08 05:21:34,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:34,669 INFO L225 Difference]: With dead ends: 1379 [2025-03-08 05:21:34,669 INFO L226 Difference]: Without dead ends: 699 [2025-03-08 05:21:34,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:34,672 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 12 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3018 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 [2025-03-08 05:21:34,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3018 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:34,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2025-03-08 05:21:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2025-03-08 05:21:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 553 states have (on average 1.6745027124773961) internal successors, (926), 573 states have internal predecessors, (926), 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) [2025-03-08 05:21:34,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1148 transitions. [2025-03-08 05:21:34,718 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1148 transitions. Word has length 104 [2025-03-08 05:21:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:34,719 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1148 transitions. [2025-03-08 05:21:34,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-08 05:21:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1148 transitions. [2025-03-08 05:21:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 05:21:34,723 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:34,723 INFO L218 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] [2025-03-08 05:21:34,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:34,923 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 [2025-03-08 05:21:34,924 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:34,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1101059978, now seen corresponding path program 1 times [2025-03-08 05:21:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:34,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843762145] [2025-03-08 05:21:34,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:34,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:34,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 05:21:34,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 05:21:34,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:34,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 05:21:35,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:35,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843762145] [2025-03-08 05:21:35,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843762145] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:35,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474782851] [2025-03-08 05:21:35,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:35,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:35,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:35,048 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) [2025-03-08 05:21:35,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 05:21:35,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 05:21:35,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 05:21:35,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:35,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:35,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:21:35,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 05:21:35,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:35,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474782851] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:35,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:35,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-08 05:21:35,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795645319] [2025-03-08 05:21:35,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:35,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:35,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:35,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:35,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:21:35,304 INFO L87 Difference]: Start difference. First operand 697 states and 1148 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 05:21:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:35,402 INFO L93 Difference]: Finished difference Result 1394 states and 2299 transitions. [2025-03-08 05:21:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:21:35,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2025-03-08 05:21:35,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:35,408 INFO L225 Difference]: With dead ends: 1394 [2025-03-08 05:21:35,409 INFO L226 Difference]: Without dead ends: 720 [2025-03-08 05:21:35,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:21:35,412 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 100 mSDsluCounter, 4936 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5944 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 [2025-03-08 05:21:35,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5944 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2025-03-08 05:21:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 697. [2025-03-08 05:21:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 553 states have (on average 1.6745027124773961) internal successors, (926), 573 states have internal predecessors, (926), 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) [2025-03-08 05:21:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1148 transitions. [2025-03-08 05:21:35,436 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1148 transitions. Word has length 88 [2025-03-08 05:21:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:35,436 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1148 transitions. [2025-03-08 05:21:35,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 05:21:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1148 transitions. [2025-03-08 05:21:35,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 05:21:35,438 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:35,438 INFO L218 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] [2025-03-08 05:21:35,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:35,638 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 [2025-03-08 05:21:35,639 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:35,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:35,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1344075997, now seen corresponding path program 1 times [2025-03-08 05:21:35,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:35,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741069861] [2025-03-08 05:21:35,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:35,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:35,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 05:21:35,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 05:21:35,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:35,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 05:21:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:35,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741069861] [2025-03-08 05:21:35,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741069861] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:35,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141844913] [2025-03-08 05:21:35,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:35,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:35,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:35,786 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) [2025-03-08 05:21:35,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 05:21:35,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 05:21:35,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 05:21:35,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:35,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:35,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:21:35,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 05:21:36,046 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:36,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141844913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:36,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:36,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-08 05:21:36,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106436142] [2025-03-08 05:21:36,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:36,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:36,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:36,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:36,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:21:36,047 INFO L87 Difference]: Start difference. First operand 697 states and 1148 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) [2025-03-08 05:21:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:36,165 INFO L93 Difference]: Finished difference Result 1394 states and 2299 transitions. [2025-03-08 05:21:36,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:21:36,168 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 [2025-03-08 05:21:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:36,173 INFO L225 Difference]: With dead ends: 1394 [2025-03-08 05:21:36,173 INFO L226 Difference]: Without dead ends: 720 [2025-03-08 05:21:36,175 INFO L434 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 [2025-03-08 05:21:36,175 INFO L435 NwaCegarLoop]: 1008 mSDtfsCounter, 111 mSDsluCounter, 4924 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5932 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 [2025-03-08 05:21:36,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5932 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2025-03-08 05:21:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 697. [2025-03-08 05:21:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 553 states have (on average 1.6745027124773961) internal successors, (926), 573 states have internal predecessors, (926), 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) [2025-03-08 05:21:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1148 transitions. [2025-03-08 05:21:36,202 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1148 transitions. Word has length 89 [2025-03-08 05:21:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:36,202 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1148 transitions. [2025-03-08 05:21:36,202 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) [2025-03-08 05:21:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1148 transitions. [2025-03-08 05:21:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-08 05:21:36,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:36,204 INFO L218 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] [2025-03-08 05:21:36,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:36,405 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 [2025-03-08 05:21:36,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:36,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1531669414, now seen corresponding path program 1 times [2025-03-08 05:21:36,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358409673] [2025-03-08 05:21:36,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:36,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:36,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 05:21:36,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 05:21:36,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:36,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 05:21:36,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:36,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358409673] [2025-03-08 05:21:36,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358409673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:36,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223406629] [2025-03-08 05:21:36,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:36,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:36,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:36,506 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) [2025-03-08 05:21:36,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 05:21:36,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-08 05:21:36,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-08 05:21:36,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:36,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:36,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:21:36,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 05:21:36,774 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:36,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223406629] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:36,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:36,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-08 05:21:36,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122636833] [2025-03-08 05:21:36,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:36,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:21:36,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:36,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:21:36,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:21:36,776 INFO L87 Difference]: Start difference. First operand 697 states and 1148 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 05:21:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:36,919 INFO L93 Difference]: Finished difference Result 1397 states and 2303 transitions. [2025-03-08 05:21:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:21:36,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2025-03-08 05:21:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:36,924 INFO L225 Difference]: With dead ends: 1397 [2025-03-08 05:21:36,924 INFO L226 Difference]: Without dead ends: 723 [2025-03-08 05:21:36,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:21:36,927 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 95 mSDsluCounter, 5891 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6889 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 [2025-03-08 05:21:36,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6889 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2025-03-08 05:21:36,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 697. [2025-03-08 05:21:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 553 states have (on average 1.6745027124773961) internal successors, (926), 573 states have internal predecessors, (926), 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) [2025-03-08 05:21:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1148 transitions. [2025-03-08 05:21:36,949 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1148 transitions. Word has length 89 [2025-03-08 05:21:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:36,950 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1148 transitions. [2025-03-08 05:21:36,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 05:21:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1148 transitions. [2025-03-08 05:21:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-08 05:21:36,952 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:36,953 INFO L218 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] [2025-03-08 05:21:36,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:37,153 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 [2025-03-08 05:21:37,153 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:37,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1177636867, now seen corresponding path program 1 times [2025-03-08 05:21:37,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:37,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015823035] [2025-03-08 05:21:37,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:37,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:37,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 05:21:37,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 05:21:37,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:37,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:37,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 05:21:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015823035] [2025-03-08 05:21:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015823035] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876538221] [2025-03-08 05:21:37,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:37,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:37,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:37,265 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) [2025-03-08 05:21:37,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 05:21:37,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-08 05:21:37,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-08 05:21:37,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:37,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:37,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:21:37,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 05:21:37,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:37,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876538221] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:37,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:37,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-08 05:21:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377877360] [2025-03-08 05:21:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:37,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:21:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:37,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:21:37,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:21:37,546 INFO L87 Difference]: Start difference. First operand 697 states and 1148 transitions. Second operand has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2025-03-08 05:21:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:37,730 INFO L93 Difference]: Finished difference Result 1397 states and 2303 transitions. [2025-03-08 05:21:37,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:21:37,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 90 [2025-03-08 05:21:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:37,735 INFO L225 Difference]: With dead ends: 1397 [2025-03-08 05:21:37,735 INFO L226 Difference]: Without dead ends: 723 [2025-03-08 05:21:37,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:21:37,738 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 105 mSDsluCounter, 5879 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6877 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 [2025-03-08 05:21:37,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6877 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2025-03-08 05:21:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 697. [2025-03-08 05:21:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 553 states have (on average 1.6745027124773961) internal successors, (926), 573 states have internal predecessors, (926), 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) [2025-03-08 05:21:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1148 transitions. [2025-03-08 05:21:37,759 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1148 transitions. Word has length 90 [2025-03-08 05:21:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:37,760 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1148 transitions. [2025-03-08 05:21:37,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2025-03-08 05:21:37,760 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1148 transitions. [2025-03-08 05:21:37,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-08 05:21:37,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:37,761 INFO L218 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] [2025-03-08 05:21:37,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:37,962 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 [2025-03-08 05:21:37,962 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:37,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1035058234, now seen corresponding path program 1 times [2025-03-08 05:21:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:37,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110955431] [2025-03-08 05:21:37,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:37,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:37,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-08 05:21:37,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-08 05:21:37,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:37,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:21:38,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110955431] [2025-03-08 05:21:38,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110955431] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:38,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190671130] [2025-03-08 05:21:38,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:38,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:38,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:38,020 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) [2025-03-08 05:21:38,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 05:21:38,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-08 05:21:38,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-08 05:21:38,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:38,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:38,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:21:38,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:38,234 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-08 05:21:38,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:38,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190671130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:38,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:38,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:21:38,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43903101] [2025-03-08 05:21:38,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:38,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:38,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:38,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:21:38,235 INFO L87 Difference]: Start difference. First operand 697 states and 1148 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 05:21:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:38,288 INFO L93 Difference]: Finished difference Result 1360 states and 2248 transitions. [2025-03-08 05:21:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2025-03-08 05:21:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:38,294 INFO L225 Difference]: With dead ends: 1360 [2025-03-08 05:21:38,294 INFO L226 Difference]: Without dead ends: 697 [2025-03-08 05:21:38,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:38,298 INFO L435 NwaCegarLoop]: 1006 mSDtfsCounter, 20 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3012 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 [2025-03-08 05:21:38,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3012 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2025-03-08 05:21:38,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2025-03-08 05:21:38,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 553 states have (on average 1.6654611211573236) internal successors, (921), 573 states have internal predecessors, (921), 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) [2025-03-08 05:21:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1143 transitions. [2025-03-08 05:21:38,319 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1143 transitions. Word has length 91 [2025-03-08 05:21:38,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:38,319 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 1143 transitions. [2025-03-08 05:21:38,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 05:21:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1143 transitions. [2025-03-08 05:21:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-08 05:21:38,320 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:38,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:21:38,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:38,521 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 [2025-03-08 05:21:38,521 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:38,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash -769487411, now seen corresponding path program 1 times [2025-03-08 05:21:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:38,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192652005] [2025-03-08 05:21:38,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:38,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:38,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 05:21:38,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 05:21:38,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:38,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:21:38,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:38,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192652005] [2025-03-08 05:21:38,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192652005] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:38,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743578244] [2025-03-08 05:21:38,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:38,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:38,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:38,581 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) [2025-03-08 05:21:38,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 05:21:38,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-08 05:21:38,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-08 05:21:38,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:38,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:38,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:21:38,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 05:21:38,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:38,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743578244] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:38,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:38,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:21:38,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953462139] [2025-03-08 05:21:38,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:38,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:38,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:38,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:38,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:21:38,800 INFO L87 Difference]: Start difference. First operand 697 states and 1143 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 05:21:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:38,940 INFO L93 Difference]: Finished difference Result 1389 states and 2288 transitions. [2025-03-08 05:21:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2025-03-08 05:21:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:38,946 INFO L225 Difference]: With dead ends: 1389 [2025-03-08 05:21:38,946 INFO L226 Difference]: Without dead ends: 784 [2025-03-08 05:21:38,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:38,948 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 171 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2884 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 [2025-03-08 05:21:38,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2884 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2025-03-08 05:21:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 742. [2025-03-08 05:21:38,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 597 states have (on average 1.6834170854271358) internal successors, (1005), 617 states have internal predecessors, (1005), 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) [2025-03-08 05:21:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1226 transitions. [2025-03-08 05:21:38,970 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1226 transitions. Word has length 92 [2025-03-08 05:21:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:38,970 INFO L471 AbstractCegarLoop]: Abstraction has 742 states and 1226 transitions. [2025-03-08 05:21:38,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 05:21:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1226 transitions. [2025-03-08 05:21:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-08 05:21:38,972 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:38,972 INFO L218 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] [2025-03-08 05:21:38,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:39,172 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 [2025-03-08 05:21:39,173 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:39,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2093119542, now seen corresponding path program 1 times [2025-03-08 05:21:39,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:39,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61569334] [2025-03-08 05:21:39,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:39,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:39,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 05:21:39,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 05:21:39,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:39,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:21:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61569334] [2025-03-08 05:21:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61569334] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969435269] [2025-03-08 05:21:39,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:39,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:39,238 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) [2025-03-08 05:21:39,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 05:21:39,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-08 05:21:39,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-08 05:21:39,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:39,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:39,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:21:39,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 05:21:39,488 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:39,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969435269] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:39,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:39,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 05:21:39,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845972353] [2025-03-08 05:21:39,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:39,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:39,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:39,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:39,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:21:39,490 INFO L87 Difference]: Start difference. First operand 742 states and 1226 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) [2025-03-08 05:21:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:39,580 INFO L93 Difference]: Finished difference Result 1382 states and 2275 transitions. [2025-03-08 05:21:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:21:39,581 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 [2025-03-08 05:21:39,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:39,585 INFO L225 Difference]: With dead ends: 1382 [2025-03-08 05:21:39,586 INFO L226 Difference]: Without dead ends: 777 [2025-03-08 05:21:39,588 INFO L434 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 [2025-03-08 05:21:39,589 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 89 mSDsluCounter, 4956 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5965 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 [2025-03-08 05:21:39,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5965 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2025-03-08 05:21:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 755. [2025-03-08 05:21:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 607 states have (on average 1.6803953871499175) internal successors, (1020), 629 states have internal predecessors, (1020), 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) [2025-03-08 05:21:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1245 transitions. [2025-03-08 05:21:39,610 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1245 transitions. Word has length 93 [2025-03-08 05:21:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:39,611 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1245 transitions. [2025-03-08 05:21:39,611 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) [2025-03-08 05:21:39,611 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1245 transitions. [2025-03-08 05:21:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 05:21:39,613 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:39,613 INFO L218 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] [2025-03-08 05:21:39,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:39,813 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 [2025-03-08 05:21:39,813 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:39,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash 655591301, now seen corresponding path program 1 times [2025-03-08 05:21:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139596792] [2025-03-08 05:21:39,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:39,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 05:21:39,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 05:21:39,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:39,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:21:39,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:39,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139596792] [2025-03-08 05:21:39,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139596792] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:39,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196806385] [2025-03-08 05:21:39,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:39,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:39,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:39,865 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) [2025-03-08 05:21:39,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 05:21:39,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 05:21:40,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 05:21:40,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:40,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:40,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:21:40,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 05:21:40,120 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196806385] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:40,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:40,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 05:21:40,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520834971] [2025-03-08 05:21:40,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:40,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:40,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:40,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:40,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:21:40,121 INFO L87 Difference]: Start difference. First operand 755 states and 1245 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, (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) [2025-03-08 05:21:40,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:40,201 INFO L93 Difference]: Finished difference Result 1391 states and 2289 transitions. [2025-03-08 05:21:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:21:40,201 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, (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 [2025-03-08 05:21:40,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:40,206 INFO L225 Difference]: With dead ends: 1391 [2025-03-08 05:21:40,207 INFO L226 Difference]: Without dead ends: 786 [2025-03-08 05:21:40,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:21:40,209 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 100 mSDsluCounter, 4944 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5953 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:40,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5953 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2025-03-08 05:21:40,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 755. [2025-03-08 05:21:40,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 607 states have (on average 1.6803953871499175) internal successors, (1020), 629 states have internal predecessors, (1020), 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) [2025-03-08 05:21:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1245 transitions. [2025-03-08 05:21:40,230 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1245 transitions. Word has length 94 [2025-03-08 05:21:40,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:40,230 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1245 transitions. [2025-03-08 05:21:40,230 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, (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) [2025-03-08 05:21:40,230 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1245 transitions. [2025-03-08 05:21:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-08 05:21:40,232 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:40,232 INFO L218 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] [2025-03-08 05:21:40,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-08 05:21:40,432 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 [2025-03-08 05:21:40,433 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:40,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:40,433 INFO L85 PathProgramCache]: Analyzing trace with hash 137225396, now seen corresponding path program 1 times [2025-03-08 05:21:40,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:40,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136434540] [2025-03-08 05:21:40,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:40,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:40,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 05:21:40,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 05:21:40,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:40,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:21:40,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136434540] [2025-03-08 05:21:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136434540] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:40,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856468786] [2025-03-08 05:21:40,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:40,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:40,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:40,479 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) [2025-03-08 05:21:40,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 05:21:40,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-08 05:21:40,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-08 05:21:40,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:40,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:40,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:21:40,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 05:21:40,721 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:40,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856468786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:40,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:40,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-08 05:21:40,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476367840] [2025-03-08 05:21:40,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:40,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:21:40,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:40,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:21:40,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:21:40,722 INFO L87 Difference]: Start difference. First operand 755 states and 1245 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) [2025-03-08 05:21:40,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:40,863 INFO L93 Difference]: Finished difference Result 1394 states and 2292 transitions. [2025-03-08 05:21:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:21:40,864 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 [2025-03-08 05:21:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:40,868 INFO L225 Difference]: With dead ends: 1394 [2025-03-08 05:21:40,869 INFO L226 Difference]: Without dead ends: 789 [2025-03-08 05:21:40,871 INFO L434 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 [2025-03-08 05:21:40,872 INFO L435 NwaCegarLoop]: 999 mSDtfsCounter, 96 mSDsluCounter, 5900 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6899 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 [2025-03-08 05:21:40,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6899 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2025-03-08 05:21:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 755. [2025-03-08 05:21:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 607 states have (on average 1.6803953871499175) internal successors, (1020), 629 states have internal predecessors, (1020), 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) [2025-03-08 05:21:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1245 transitions. [2025-03-08 05:21:40,892 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1245 transitions. Word has length 94 [2025-03-08 05:21:40,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:40,892 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1245 transitions. [2025-03-08 05:21:40,893 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) [2025-03-08 05:21:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1245 transitions. [2025-03-08 05:21:40,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-08 05:21:40,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:40,894 INFO L218 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] [2025-03-08 05:21:40,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:41,094 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 [2025-03-08 05:21:41,095 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:41,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:41,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2039387349, now seen corresponding path program 1 times [2025-03-08 05:21:41,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:41,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176001396] [2025-03-08 05:21:41,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:41,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:41,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-08 05:21:41,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-08 05:21:41,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:41,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:21:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176001396] [2025-03-08 05:21:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176001396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488543061] [2025-03-08 05:21:41,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:41,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:41,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:41,149 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) [2025-03-08 05:21:41,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 05:21:41,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-08 05:21:41,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-08 05:21:41,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:41,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:41,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:21:41,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:21:41,404 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:41,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488543061] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:41,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:41,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:21:41,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863955377] [2025-03-08 05:21:41,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:41,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:41,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:41,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:41,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:21:41,407 INFO L87 Difference]: Start difference. First operand 755 states and 1245 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) [2025-03-08 05:21:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:41,452 INFO L93 Difference]: Finished difference Result 1436 states and 2371 transitions. [2025-03-08 05:21:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:21:41,452 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 [2025-03-08 05:21:41,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:41,458 INFO L225 Difference]: With dead ends: 1436 [2025-03-08 05:21:41,458 INFO L226 Difference]: Without dead ends: 755 [2025-03-08 05:21:41,461 INFO L434 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 [2025-03-08 05:21:41,461 INFO L435 NwaCegarLoop]: 1010 mSDtfsCounter, 2 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3021 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 [2025-03-08 05:21:41,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3021 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2025-03-08 05:21:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2025-03-08 05:21:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 607 states have (on average 1.6754530477759473) internal successors, (1017), 629 states have internal predecessors, (1017), 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) [2025-03-08 05:21:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1242 transitions. [2025-03-08 05:21:41,492 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1242 transitions. Word has length 110 [2025-03-08 05:21:41,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:41,493 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1242 transitions. [2025-03-08 05:21:41,493 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) [2025-03-08 05:21:41,493 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1242 transitions. [2025-03-08 05:21:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-08 05:21:41,495 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:41,495 INFO L218 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] [2025-03-08 05:21:41,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-08 05:21:41,695 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 [2025-03-08 05:21:41,696 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:41,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:41,696 INFO L85 PathProgramCache]: Analyzing trace with hash -860295925, now seen corresponding path program 1 times [2025-03-08 05:21:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:41,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246272305] [2025-03-08 05:21:41,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:41,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:41,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 05:21:41,708 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 05:21:41,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:41,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:21:41,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:41,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246272305] [2025-03-08 05:21:41,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246272305] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:41,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849452255] [2025-03-08 05:21:41,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:41,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:41,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:41,741 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) [2025-03-08 05:21:41,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 05:21:41,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 05:21:41,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 05:21:41,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:41,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:41,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:21:41,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-08 05:21:41,982 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:41,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849452255] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:41,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:41,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-08 05:21:41,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182926439] [2025-03-08 05:21:41,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:41,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:21:41,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:41,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:21:41,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:21:41,982 INFO L87 Difference]: Start difference. First operand 755 states and 1242 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) [2025-03-08 05:21:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:42,094 INFO L93 Difference]: Finished difference Result 1385 states and 2275 transitions. [2025-03-08 05:21:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:21:42,094 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 [2025-03-08 05:21:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:42,099 INFO L225 Difference]: With dead ends: 1385 [2025-03-08 05:21:42,099 INFO L226 Difference]: Without dead ends: 780 [2025-03-08 05:21:42,102 INFO L434 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 [2025-03-08 05:21:42,102 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 106 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6869 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 [2025-03-08 05:21:42,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6869 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:42,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2025-03-08 05:21:42,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 755. [2025-03-08 05:21:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 607 states have (on average 1.6754530477759473) internal successors, (1017), 629 states have internal predecessors, (1017), 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) [2025-03-08 05:21:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1242 transitions. [2025-03-08 05:21:42,121 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1242 transitions. Word has length 95 [2025-03-08 05:21:42,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:42,122 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 1242 transitions. [2025-03-08 05:21:42,122 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) [2025-03-08 05:21:42,122 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1242 transitions. [2025-03-08 05:21:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-08 05:21:42,123 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:42,123 INFO L218 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, 1, 1, 1, 1, 1, 1] [2025-03-08 05:21:42,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-08 05:21:42,323 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 [2025-03-08 05:21:42,324 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:42,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:42,324 INFO L85 PathProgramCache]: Analyzing trace with hash -99065452, now seen corresponding path program 1 times [2025-03-08 05:21:42,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:42,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771919961] [2025-03-08 05:21:42,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:42,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-08 05:21:42,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-08 05:21:42,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:42,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:21:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771919961] [2025-03-08 05:21:42,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771919961] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964438589] [2025-03-08 05:21:42,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:42,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:42,379 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) [2025-03-08 05:21:42,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 05:21:42,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-08 05:21:42,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-08 05:21:42,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:42,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:42,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:21:42,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:21:42,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:42,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964438589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:42,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:42,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2025-03-08 05:21:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750914203] [2025-03-08 05:21:42,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:42,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:21:42,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:42,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:21:42,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:21:42,843 INFO L87 Difference]: Start difference. First operand 755 states and 1242 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 05:21:45,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:45,757 INFO L93 Difference]: Finished difference Result 2606 states and 4329 transitions. [2025-03-08 05:21:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:21:45,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2025-03-08 05:21:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:45,769 INFO L225 Difference]: With dead ends: 2606 [2025-03-08 05:21:45,769 INFO L226 Difference]: Without dead ends: 2005 [2025-03-08 05:21:45,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:21:45,772 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 4542 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 3833 mSolverCounterSat, 801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 4634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 801 IncrementalHoareTripleChecker+Valid, 3833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:45,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 1387 Invalid, 4634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [801 Valid, 3833 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 05:21:45,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2025-03-08 05:21:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1838. [2025-03-08 05:21:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1466 states have (on average 1.6684856753069577) internal successors, (2446), 1504 states have internal predecessors, (2446), 293 states have call successors, (293), 75 states have call predecessors, (293), 78 states have return successors, (314), 273 states have call predecessors, (314), 289 states have call successors, (314) [2025-03-08 05:21:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 3053 transitions. [2025-03-08 05:21:45,835 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 3053 transitions. Word has length 112 [2025-03-08 05:21:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:45,837 INFO L471 AbstractCegarLoop]: Abstraction has 1838 states and 3053 transitions. [2025-03-08 05:21:45,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 05:21:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 3053 transitions. [2025-03-08 05:21:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2025-03-08 05:21:45,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:45,842 INFO L218 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] [2025-03-08 05:21:45,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:46,042 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 [2025-03-08 05:21:46,043 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:46,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1614631681, now seen corresponding path program 1 times [2025-03-08 05:21:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599228747] [2025-03-08 05:21:46,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:46,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:46,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-03-08 05:21:46,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-03-08 05:21:46,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:46,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-03-08 05:21:46,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:46,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599228747] [2025-03-08 05:21:46,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599228747] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:46,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529521025] [2025-03-08 05:21:46,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:46,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:46,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:46,133 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) [2025-03-08 05:21:46,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 05:21:46,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 221 statements into 1 equivalence classes. [2025-03-08 05:21:46,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 221 of 221 statements. [2025-03-08 05:21:46,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:46,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:46,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:21:46,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-08 05:21:46,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:46,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529521025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:46,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:46,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:21:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649476572] [2025-03-08 05:21:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:46,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:21:46,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:46,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:21:46,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:46,530 INFO L87 Difference]: Start difference. First operand 1838 states and 3053 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) [2025-03-08 05:21:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:46,958 INFO L93 Difference]: Finished difference Result 3546 states and 5990 transitions. [2025-03-08 05:21:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:21:46,959 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 [2025-03-08 05:21:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:46,967 INFO L225 Difference]: With dead ends: 3546 [2025-03-08 05:21:46,967 INFO L226 Difference]: Without dead ends: 1862 [2025-03-08 05:21:46,973 INFO L434 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 [2025-03-08 05:21:46,974 INFO L435 NwaCegarLoop]: 1000 mSDtfsCounter, 963 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:46,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 2572 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:21:46,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2025-03-08 05:21:47,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1862. [2025-03-08 05:21:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1487 states have (on average 1.6691324815063886) internal successors, (2482), 1525 states have internal predecessors, (2482), 293 states have call successors, (293), 78 states have call predecessors, (293), 81 states have return successors, (317), 273 states have call predecessors, (317), 289 states have call successors, (317) [2025-03-08 05:21:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 3092 transitions. [2025-03-08 05:21:47,046 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 3092 transitions. Word has length 221 [2025-03-08 05:21:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:47,046 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 3092 transitions. [2025-03-08 05:21:47,046 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) [2025-03-08 05:21:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 3092 transitions. [2025-03-08 05:21:47,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-08 05:21:47,050 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:47,050 INFO L218 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] [2025-03-08 05:21:47,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:47,251 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 [2025-03-08 05:21:47,251 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:47,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 598931636, now seen corresponding path program 1 times [2025-03-08 05:21:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:47,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245467819] [2025-03-08 05:21:47,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:47,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-08 05:21:47,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-08 05:21:47,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:47,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:47,318 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:21:47,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:47,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245467819] [2025-03-08 05:21:47,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245467819] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:47,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140252067] [2025-03-08 05:21:47,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:47,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:47,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:47,320 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) [2025-03-08 05:21:47,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 05:21:47,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-08 05:21:47,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-08 05:21:47,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:47,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:47,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:21:47,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:21:47,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:47,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140252067] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:47,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:47,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:21:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072286333] [2025-03-08 05:21:47,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:47,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:21:47,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:47,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:21:47,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:47,605 INFO L87 Difference]: Start difference. First operand 1862 states and 3092 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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) [2025-03-08 05:21:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:47,700 INFO L93 Difference]: Finished difference Result 4466 states and 7415 transitions. [2025-03-08 05:21:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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 152 [2025-03-08 05:21:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:47,710 INFO L225 Difference]: With dead ends: 4466 [2025-03-08 05:21:47,710 INFO L226 Difference]: Without dead ends: 2758 [2025-03-08 05:21:47,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:21:47,716 INFO L435 NwaCegarLoop]: 1353 mSDtfsCounter, 964 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 4644 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:47,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 4644 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2025-03-08 05:21:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 2754. [2025-03-08 05:21:47,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2204 states have (on average 1.6497277676950999) internal successors, (3636), 2243 states have internal predecessors, (3636), 423 states have call successors, (423), 124 states have call predecessors, (423), 126 states have return successors, (487), 401 states have call predecessors, (487), 417 states have call successors, (487) [2025-03-08 05:21:47,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 4546 transitions. [2025-03-08 05:21:47,796 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 4546 transitions. Word has length 152 [2025-03-08 05:21:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:47,796 INFO L471 AbstractCegarLoop]: Abstraction has 2754 states and 4546 transitions. [2025-03-08 05:21:47,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 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) [2025-03-08 05:21:47,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 4546 transitions. [2025-03-08 05:21:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2025-03-08 05:21:47,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:47,802 INFO L218 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, 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] [2025-03-08 05:21:47,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-08 05:21:48,002 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 [2025-03-08 05:21:48,002 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:48,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1510926502, now seen corresponding path program 1 times [2025-03-08 05:21:48,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:48,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371983830] [2025-03-08 05:21:48,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:48,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 226 statements into 1 equivalence classes. [2025-03-08 05:21:48,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 226 of 226 statements. [2025-03-08 05:21:48,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:48,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2025-03-08 05:21:48,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371983830] [2025-03-08 05:21:48,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371983830] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:48,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641360979] [2025-03-08 05:21:48,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:48,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:48,085 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) [2025-03-08 05:21:48,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 05:21:48,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 226 statements into 1 equivalence classes. [2025-03-08 05:21:48,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 226 of 226 statements. [2025-03-08 05:21:48,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:48,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:48,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:21:48,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:48,448 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-03-08 05:21:48,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:48,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641360979] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:48,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:48,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:21:48,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906659749] [2025-03-08 05:21:48,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:48,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:21:48,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:48,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:21:48,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:48,449 INFO L87 Difference]: Start difference. First operand 2754 states and 4546 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2025-03-08 05:21:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:48,869 INFO L93 Difference]: Finished difference Result 5402 states and 9089 transitions. [2025-03-08 05:21:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:21:48,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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 226 [2025-03-08 05:21:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:48,881 INFO L225 Difference]: With dead ends: 5402 [2025-03-08 05:21:48,881 INFO L226 Difference]: Without dead ends: 2802 [2025-03-08 05:21:48,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:21:48,891 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 957 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:48,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 2569 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:21:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2025-03-08 05:21:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2802. [2025-03-08 05:21:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2246 states have (on average 1.6509349955476402) internal successors, (3708), 2285 states have internal predecessors, (3708), 423 states have call successors, (423), 130 states have call predecessors, (423), 132 states have return successors, (492), 401 states have call predecessors, (492), 417 states have call successors, (492) [2025-03-08 05:21:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4623 transitions. [2025-03-08 05:21:48,978 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4623 transitions. Word has length 226 [2025-03-08 05:21:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:48,979 INFO L471 AbstractCegarLoop]: Abstraction has 2802 states and 4623 transitions. [2025-03-08 05:21:48,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 4 states have internal predecessors, (108), 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) [2025-03-08 05:21:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4623 transitions. [2025-03-08 05:21:48,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2025-03-08 05:21:48,984 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:48,984 INFO L218 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] [2025-03-08 05:21:48,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-08 05:21:49,185 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 [2025-03-08 05:21:49,185 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:49,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1723910246, now seen corresponding path program 1 times [2025-03-08 05:21:49,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:49,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192931354] [2025-03-08 05:21:49,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:49,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-08 05:21:49,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-08 05:21:49,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:49,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2025-03-08 05:21:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192931354] [2025-03-08 05:21:49,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192931354] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963264538] [2025-03-08 05:21:49,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:49,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:49,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:49,264 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) [2025-03-08 05:21:49,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-08 05:21:49,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 230 statements into 1 equivalence classes. [2025-03-08 05:21:49,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 230 of 230 statements. [2025-03-08 05:21:49,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:49,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:49,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:21:49,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-08 05:21:49,623 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:49,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963264538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:49,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:49,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:21:49,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742276086] [2025-03-08 05:21:49,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:49,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:21:49,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:49,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:21:49,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:49,625 INFO L87 Difference]: Start difference. First operand 2802 states and 4623 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) [2025-03-08 05:21:50,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:50,025 INFO L93 Difference]: Finished difference Result 5498 states and 9225 transitions. [2025-03-08 05:21:50,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:21:50,028 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 [2025-03-08 05:21:50,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:50,041 INFO L225 Difference]: With dead ends: 5498 [2025-03-08 05:21:50,041 INFO L226 Difference]: Without dead ends: 2850 [2025-03-08 05:21:50,050 INFO L434 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 [2025-03-08 05:21:50,050 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 938 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:50,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2566 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:21:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2025-03-08 05:21:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2850. [2025-03-08 05:21:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2288 states have (on average 1.652097902097902) internal successors, (3780), 2327 states have internal predecessors, (3780), 423 states have call successors, (423), 136 states have call predecessors, (423), 138 states have return successors, (497), 401 states have call predecessors, (497), 417 states have call successors, (497) [2025-03-08 05:21:50,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 4700 transitions. [2025-03-08 05:21:50,132 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 4700 transitions. Word has length 230 [2025-03-08 05:21:50,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:50,132 INFO L471 AbstractCegarLoop]: Abstraction has 2850 states and 4700 transitions. [2025-03-08 05:21:50,132 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) [2025-03-08 05:21:50,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 4700 transitions. [2025-03-08 05:21:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-03-08 05:21:50,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:50,138 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:21:50,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-08 05:21:50,338 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 [2025-03-08 05:21:50,338 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:50,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:50,339 INFO L85 PathProgramCache]: Analyzing trace with hash -614616038, now seen corresponding path program 1 times [2025-03-08 05:21:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:50,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991774678] [2025-03-08 05:21:50,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:50,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:50,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 234 statements into 1 equivalence classes. [2025-03-08 05:21:50,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 234 of 234 statements. [2025-03-08 05:21:50,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:50,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2025-03-08 05:21:50,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991774678] [2025-03-08 05:21:50,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991774678] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:50,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409937863] [2025-03-08 05:21:50,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:50,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:50,429 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) [2025-03-08 05:21:50,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-08 05:21:50,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 234 statements into 1 equivalence classes. [2025-03-08 05:21:50,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 234 of 234 statements. [2025-03-08 05:21:50,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:50,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:50,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:21:50,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2025-03-08 05:21:50,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:50,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409937863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:50,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:50,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:21:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609976076] [2025-03-08 05:21:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:50,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:21:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:50,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:21:50,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:50,809 INFO L87 Difference]: Start difference. First operand 2850 states and 4700 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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) [2025-03-08 05:21:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:51,264 INFO L93 Difference]: Finished difference Result 5594 states and 9361 transitions. [2025-03-08 05:21:51,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:21:51,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 234 [2025-03-08 05:21:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:51,282 INFO L225 Difference]: With dead ends: 5594 [2025-03-08 05:21:51,282 INFO L226 Difference]: Without dead ends: 2898 [2025-03-08 05:21:51,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:21:51,294 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 929 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:51,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 2563 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:21:51,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2025-03-08 05:21:51,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2898. [2025-03-08 05:21:51,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2330 states have (on average 1.6532188841201716) internal successors, (3852), 2369 states have internal predecessors, (3852), 423 states have call successors, (423), 142 states have call predecessors, (423), 144 states have return successors, (502), 401 states have call predecessors, (502), 417 states have call successors, (502) [2025-03-08 05:21:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4777 transitions. [2025-03-08 05:21:51,410 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4777 transitions. Word has length 234 [2025-03-08 05:21:51,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:51,411 INFO L471 AbstractCegarLoop]: Abstraction has 2898 states and 4777 transitions. [2025-03-08 05:21:51,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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) [2025-03-08 05:21:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4777 transitions. [2025-03-08 05:21:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-08 05:21:51,416 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:51,416 INFO L218 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] [2025-03-08 05:21:51,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-08 05:21:51,617 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 [2025-03-08 05:21:51,618 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:51,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1248594334, now seen corresponding path program 1 times [2025-03-08 05:21:51,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:51,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238131544] [2025-03-08 05:21:51,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:51,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:51,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 05:21:51,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 05:21:51,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:51,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 05:21:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238131544] [2025-03-08 05:21:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238131544] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616131418] [2025-03-08 05:21:51,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:51,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:51,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:51,677 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) [2025-03-08 05:21:51,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-08 05:21:51,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 05:21:51,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 05:21:51,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:51,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:51,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:21:51,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:21:51,936 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:51,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616131418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:51,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:51,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-08 05:21:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148854716] [2025-03-08 05:21:51,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:51,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:51,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:51,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:51,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:21:51,938 INFO L87 Difference]: Start difference. First operand 2898 states and 4777 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) [2025-03-08 05:21:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:52,022 INFO L93 Difference]: Finished difference Result 5773 states and 9534 transitions. [2025-03-08 05:21:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:52,027 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 [2025-03-08 05:21:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:52,050 INFO L225 Difference]: With dead ends: 5773 [2025-03-08 05:21:52,050 INFO L226 Difference]: Without dead ends: 2863 [2025-03-08 05:21:52,059 INFO L434 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 [2025-03-08 05:21:52,060 INFO L435 NwaCegarLoop]: 1007 mSDtfsCounter, 7 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3013 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 [2025-03-08 05:21:52,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3013 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2025-03-08 05:21:52,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2863. [2025-03-08 05:21:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2298 states have (on average 1.6466492602262837) internal successors, (3784), 2335 states have internal predecessors, (3784), 422 states have call successors, (422), 142 states have call predecessors, (422), 142 states have return successors, (499), 400 states have call predecessors, (499), 416 states have call successors, (499) [2025-03-08 05:21:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 4705 transitions. [2025-03-08 05:21:52,158 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 4705 transitions. Word has length 159 [2025-03-08 05:21:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:52,158 INFO L471 AbstractCegarLoop]: Abstraction has 2863 states and 4705 transitions. [2025-03-08 05:21:52,158 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) [2025-03-08 05:21:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 4705 transitions. [2025-03-08 05:21:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-08 05:21:52,163 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:52,163 INFO L218 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, 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] [2025-03-08 05:21:52,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-08 05:21:52,364 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 [2025-03-08 05:21:52,364 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:52,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash 531929957, now seen corresponding path program 1 times [2025-03-08 05:21:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273464956] [2025-03-08 05:21:52,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:52,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:52,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 05:21:52,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 05:21:52,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:52,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 05:21:52,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273464956] [2025-03-08 05:21:52,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273464956] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:52,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738324144] [2025-03-08 05:21:52,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:52,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:52,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:52,473 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) [2025-03-08 05:21:52,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-08 05:21:52,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 05:21:52,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 05:21:52,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:52,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:52,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:21:52,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:21:52,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738324144] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-08 05:21:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626043881] [2025-03-08 05:21:52,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:52,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:21:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:52,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:21:52,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:21:52,793 INFO L87 Difference]: Start difference. First operand 2863 states and 4705 transitions. Second operand has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:21:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:52,939 INFO L93 Difference]: Finished difference Result 5749 states and 9443 transitions. [2025-03-08 05:21:52,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:21:52,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 159 [2025-03-08 05:21:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:52,953 INFO L225 Difference]: With dead ends: 5749 [2025-03-08 05:21:52,953 INFO L226 Difference]: Without dead ends: 2916 [2025-03-08 05:21:52,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:21:52,961 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 111 mSDsluCounter, 5845 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6839 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:52,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6839 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:21:52,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2025-03-08 05:21:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2863. [2025-03-08 05:21:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2298 states have (on average 1.6462140992167102) internal successors, (3783), 2335 states have internal predecessors, (3783), 422 states have call successors, (422), 142 states have call predecessors, (422), 142 states have return successors, (499), 400 states have call predecessors, (499), 416 states have call successors, (499) [2025-03-08 05:21:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 4704 transitions. [2025-03-08 05:21:53,031 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 4704 transitions. Word has length 159 [2025-03-08 05:21:53,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:53,031 INFO L471 AbstractCegarLoop]: Abstraction has 2863 states and 4704 transitions. [2025-03-08 05:21:53,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:21:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 4704 transitions. [2025-03-08 05:21:53,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-08 05:21:53,036 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:53,036 INFO L218 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, 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] [2025-03-08 05:21:53,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-08 05:21:53,237 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 [2025-03-08 05:21:53,237 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:53,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:53,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1853214306, now seen corresponding path program 1 times [2025-03-08 05:21:53,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:53,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269223752] [2025-03-08 05:21:53,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:53,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:53,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-08 05:21:53,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-08 05:21:53,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:53,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 05:21:53,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269223752] [2025-03-08 05:21:53,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269223752] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:53,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63896198] [2025-03-08 05:21:53,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:53,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:53,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:53,364 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) [2025-03-08 05:21:53,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-08 05:21:53,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-08 05:21:53,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-08 05:21:53,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:53,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:53,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 05:21:53,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:21:53,617 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:53,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63896198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:53,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-08 05:21:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138972118] [2025-03-08 05:21:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:53,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:53,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:53,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:53,618 INFO L87 Difference]: Start difference. First operand 2863 states and 4704 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:21:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:53,735 INFO L93 Difference]: Finished difference Result 5750 states and 9444 transitions. [2025-03-08 05:21:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:21:53,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2025-03-08 05:21:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:53,748 INFO L225 Difference]: With dead ends: 5750 [2025-03-08 05:21:53,748 INFO L226 Difference]: Without dead ends: 2904 [2025-03-08 05:21:53,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:21:53,757 INFO L435 NwaCegarLoop]: 1017 mSDtfsCounter, 122 mSDsluCounter, 4946 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5963 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:53,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5963 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:53,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2025-03-08 05:21:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2856. [2025-03-08 05:21:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2291 states have (on average 1.6442601484068093) internal successors, (3767), 2328 states have internal predecessors, (3767), 422 states have call successors, (422), 142 states have call predecessors, (422), 142 states have return successors, (499), 400 states have call predecessors, (499), 416 states have call successors, (499) [2025-03-08 05:21:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4688 transitions. [2025-03-08 05:21:53,826 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4688 transitions. Word has length 160 [2025-03-08 05:21:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:53,826 INFO L471 AbstractCegarLoop]: Abstraction has 2856 states and 4688 transitions. [2025-03-08 05:21:53,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:21:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4688 transitions. [2025-03-08 05:21:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-08 05:21:53,830 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:53,831 INFO L218 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] [2025-03-08 05:21:53,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:54,031 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 [2025-03-08 05:21:54,031 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:54,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:54,032 INFO L85 PathProgramCache]: Analyzing trace with hash 448583796, now seen corresponding path program 1 times [2025-03-08 05:21:54,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:54,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015654158] [2025-03-08 05:21:54,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:54,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:54,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-08 05:21:54,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-08 05:21:54,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:54,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 05:21:54,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:54,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015654158] [2025-03-08 05:21:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015654158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:54,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:21:54,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:21:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536795730] [2025-03-08 05:21:54,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:54,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:54,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:54,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:21:54,139 INFO L87 Difference]: Start difference. First operand 2856 states and 4688 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) [2025-03-08 05:21:54,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:54,268 INFO L93 Difference]: Finished difference Result 5654 states and 9292 transitions. [2025-03-08 05:21:54,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:21:54,268 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 [2025-03-08 05:21:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:54,277 INFO L225 Difference]: With dead ends: 5654 [2025-03-08 05:21:54,278 INFO L226 Difference]: Without dead ends: 2906 [2025-03-08 05:21:54,284 INFO L434 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 [2025-03-08 05:21:54,284 INFO L435 NwaCegarLoop]: 1005 mSDtfsCounter, 126 mSDsluCounter, 4902 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5907 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:54,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5907 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2025-03-08 05:21:54,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2856. [2025-03-08 05:21:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2291 states have (on average 1.6442601484068093) internal successors, (3767), 2328 states have internal predecessors, (3767), 422 states have call successors, (422), 142 states have call predecessors, (422), 142 states have return successors, (499), 400 states have call predecessors, (499), 416 states have call successors, (499) [2025-03-08 05:21:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 4688 transitions. [2025-03-08 05:21:54,349 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 4688 transitions. Word has length 161 [2025-03-08 05:21:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:54,349 INFO L471 AbstractCegarLoop]: Abstraction has 2856 states and 4688 transitions. [2025-03-08 05:21:54,349 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) [2025-03-08 05:21:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 4688 transitions. [2025-03-08 05:21:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2025-03-08 05:21:54,353 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:54,353 INFO L218 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] [2025-03-08 05:21:54,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-08 05:21:54,354 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:54,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1121101179, now seen corresponding path program 1 times [2025-03-08 05:21:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:54,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204807623] [2025-03-08 05:21:54,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:54,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 240 statements into 1 equivalence classes. [2025-03-08 05:21:54,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 240 of 240 statements. [2025-03-08 05:21:54,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:54,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-03-08 05:21:54,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:54,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204807623] [2025-03-08 05:21:54,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204807623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:54,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:21:54,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:21:54,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004129438] [2025-03-08 05:21:54,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:54,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:21:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:54,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:21:54,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:21:54,431 INFO L87 Difference]: Start difference. First operand 2856 states and 4688 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) [2025-03-08 05:21:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:54,498 INFO L93 Difference]: Finished difference Result 5667 states and 9319 transitions. [2025-03-08 05:21:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:21:54,499 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 [2025-03-08 05:21:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:54,508 INFO L225 Difference]: With dead ends: 5667 [2025-03-08 05:21:54,509 INFO L226 Difference]: Without dead ends: 2814 [2025-03-08 05:21:54,516 INFO L434 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 [2025-03-08 05:21:54,516 INFO L435 NwaCegarLoop]: 1006 mSDtfsCounter, 8 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3012 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 [2025-03-08 05:21:54,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3012 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:21:54,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2025-03-08 05:21:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2814. [2025-03-08 05:21:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2252 states have (on average 1.6403197158081706) internal successors, (3694), 2287 states have internal predecessors, (3694), 421 states have call successors, (421), 142 states have call predecessors, (421), 140 states have return successors, (496), 399 states have call predecessors, (496), 415 states have call successors, (496) [2025-03-08 05:21:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4611 transitions. [2025-03-08 05:21:54,585 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4611 transitions. Word has length 240 [2025-03-08 05:21:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:54,586 INFO L471 AbstractCegarLoop]: Abstraction has 2814 states and 4611 transitions. [2025-03-08 05:21:54,586 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) [2025-03-08 05:21:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4611 transitions. [2025-03-08 05:21:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-08 05:21:54,589 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:54,589 INFO L218 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] [2025-03-08 05:21:54,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-08 05:21:54,590 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:54,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:54,591 INFO L85 PathProgramCache]: Analyzing trace with hash -708075712, now seen corresponding path program 1 times [2025-03-08 05:21:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841171169] [2025-03-08 05:21:54,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:54,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:54,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-08 05:21:54,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 05:21:54,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:54,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:54,880 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:21:54,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841171169] [2025-03-08 05:21:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841171169] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817968500] [2025-03-08 05:21:54,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:54,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:54,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:54,883 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) [2025-03-08 05:21:54,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-08 05:21:55,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-08 05:21:55,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 05:21:55,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:55,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:55,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 1648 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 05:21:55,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:21:55,305 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:55,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817968500] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:55,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:55,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-08 05:21:55,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868854575] [2025-03-08 05:21:55,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:55,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:21:55,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:55,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:21:55,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-08 05:21:55,306 INFO L87 Difference]: Start difference. First operand 2814 states and 4611 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-08 05:21:56,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:21:56,822 INFO L93 Difference]: Finished difference Result 5881 states and 9659 transitions. [2025-03-08 05:21:56,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:21:56,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 162 [2025-03-08 05:21:56,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:21:56,832 INFO L225 Difference]: With dead ends: 5881 [2025-03-08 05:21:56,832 INFO L226 Difference]: Without dead ends: 3140 [2025-03-08 05:21:56,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:21:56,839 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 1889 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:21:56,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 1236 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-08 05:21:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2025-03-08 05:21:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 2917. [2025-03-08 05:21:56,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2272 states have (on average 1.618838028169014) internal successors, (3678), 2327 states have internal predecessors, (3678), 503 states have call successors, (503), 132 states have call predecessors, (503), 141 states have return successors, (578), 480 states have call predecessors, (578), 497 states have call successors, (578) [2025-03-08 05:21:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 4759 transitions. [2025-03-08 05:21:56,919 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 4759 transitions. Word has length 162 [2025-03-08 05:21:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:21:56,919 INFO L471 AbstractCegarLoop]: Abstraction has 2917 states and 4759 transitions. [2025-03-08 05:21:56,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2025-03-08 05:21:56,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 4759 transitions. [2025-03-08 05:21:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-08 05:21:56,922 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:21:56,922 INFO L218 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] [2025-03-08 05:21:56,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-08 05:21:57,122 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 [2025-03-08 05:21:57,123 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:21:57,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:21:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1805391649, now seen corresponding path program 1 times [2025-03-08 05:21:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:21:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512107165] [2025-03-08 05:21:57,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:21:57,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-08 05:21:57,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 05:21:57,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:57,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:21:57,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:21:57,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512107165] [2025-03-08 05:21:57,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512107165] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:21:57,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783596594] [2025-03-08 05:21:57,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:21:57,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:21:57,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:21:57,335 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) [2025-03-08 05:21:57,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-08 05:21:57,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-08 05:21:57,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 05:21:57,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:21:57,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:21:57,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-08 05:21:57,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:21:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:21:57,696 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:21:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783596594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:21:57,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:21:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:21:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588525226] [2025-03-08 05:21:57,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:21:57,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:21:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:21:57,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:21:57,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:21:57,697 INFO L87 Difference]: Start difference. First operand 2917 states and 4759 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-08 05:22:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:00,940 INFO L93 Difference]: Finished difference Result 12584 states and 20912 transitions. [2025-03-08 05:22:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 05:22:00,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2025-03-08 05:22:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:00,978 INFO L225 Difference]: With dead ends: 12584 [2025-03-08 05:22:00,978 INFO L226 Difference]: Without dead ends: 9739 [2025-03-08 05:22:00,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2025-03-08 05:22:00,994 INFO L435 NwaCegarLoop]: 584 mSDtfsCounter, 3366 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 6948 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3479 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 7747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 6948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:00,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3479 Valid, 2180 Invalid, 7747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 6948 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 05:22:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9739 states. [2025-03-08 05:22:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9739 to 8945. [2025-03-08 05:22:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8945 states, 6906 states have (on average 1.6083116130900665) internal successors, (11107), 7084 states have internal predecessors, (11107), 1588 states have call successors, (1588), 374 states have call predecessors, (1588), 450 states have return successors, (2069), 1554 states have call predecessors, (2069), 1578 states have call successors, (2069) [2025-03-08 05:22:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8945 states to 8945 states and 14764 transitions. [2025-03-08 05:22:01,526 INFO L78 Accepts]: Start accepts. Automaton has 8945 states and 14764 transitions. Word has length 162 [2025-03-08 05:22:01,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:01,527 INFO L471 AbstractCegarLoop]: Abstraction has 8945 states and 14764 transitions. [2025-03-08 05:22:01,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-08 05:22:01,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8945 states and 14764 transitions. [2025-03-08 05:22:01,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 05:22:01,536 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:01,536 INFO L218 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] [2025-03-08 05:22:01,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-08 05:22:01,737 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 [2025-03-08 05:22:01,737 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:01,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:01,738 INFO L85 PathProgramCache]: Analyzing trace with hash 151809876, now seen corresponding path program 1 times [2025-03-08 05:22:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:01,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080718598] [2025-03-08 05:22:01,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:01,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:22:01,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:22:01,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:01,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:02,023 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:22:02,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:02,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080718598] [2025-03-08 05:22:02,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080718598] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:02,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090276890] [2025-03-08 05:22:02,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:02,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:02,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:02,028 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) [2025-03-08 05:22:02,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-08 05:22:02,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:22:02,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:22:02,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:02,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:02,300 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:22:02,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:22:02,312 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090276890] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:02,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:02,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-08 05:22:02,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802640759] [2025-03-08 05:22:02,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:02,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:22:02,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:02,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:22:02,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:22:02,313 INFO L87 Difference]: Start difference. First operand 8945 states and 14764 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:22:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:02,728 INFO L93 Difference]: Finished difference Result 20918 states and 34819 transitions. [2025-03-08 05:22:02,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:22:02,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2025-03-08 05:22:02,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:02,844 INFO L225 Difference]: With dead ends: 20918 [2025-03-08 05:22:02,844 INFO L226 Difference]: Without dead ends: 12049 [2025-03-08 05:22:02,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:22:02,888 INFO L435 NwaCegarLoop]: 1879 mSDtfsCounter, 985 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:02,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 2889 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:22:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12049 states. [2025-03-08 05:22:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12049 to 8936. [2025-03-08 05:22:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8936 states, 6900 states have (on average 1.6079710144927537) internal successors, (11095), 7075 states have internal predecessors, (11095), 1588 states have call successors, (1588), 374 states have call predecessors, (1588), 447 states have return successors, (2039), 1554 states have call predecessors, (2039), 1578 states have call successors, (2039) [2025-03-08 05:22:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8936 states to 8936 states and 14722 transitions. [2025-03-08 05:22:03,318 INFO L78 Accepts]: Start accepts. Automaton has 8936 states and 14722 transitions. Word has length 167 [2025-03-08 05:22:03,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:03,318 INFO L471 AbstractCegarLoop]: Abstraction has 8936 states and 14722 transitions. [2025-03-08 05:22:03,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:22:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 8936 states and 14722 transitions. [2025-03-08 05:22:03,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 05:22:03,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:03,322 INFO L218 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] [2025-03-08 05:22:03,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-08 05:22:03,523 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 [2025-03-08 05:22:03,523 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:03,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:03,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1177301875, now seen corresponding path program 1 times [2025-03-08 05:22:03,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:03,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608569913] [2025-03-08 05:22:03,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:03,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:03,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:22:03,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:22:03,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:03,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:03,818 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:22:03,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:03,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608569913] [2025-03-08 05:22:03,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608569913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:03,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076726736] [2025-03-08 05:22:03,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:03,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:03,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:03,821 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:03,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-08 05:22:03,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:22:04,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:22:04,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:04,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:04,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 05:22:04,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:22:04,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:04,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076726736] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:04,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:04,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-08 05:22:04,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446252096] [2025-03-08 05:22:04,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:04,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:22:04,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:04,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:22:04,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-08 05:22:04,161 INFO L87 Difference]: Start difference. First operand 8936 states and 14722 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:22:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:04,969 INFO L93 Difference]: Finished difference Result 12051 states and 20042 transitions. [2025-03-08 05:22:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:22:04,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2025-03-08 05:22:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:05,013 INFO L225 Difference]: With dead ends: 12051 [2025-03-08 05:22:05,014 INFO L226 Difference]: Without dead ends: 12048 [2025-03-08 05:22:05,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2025-03-08 05:22:05,020 INFO L435 NwaCegarLoop]: 1878 mSDtfsCounter, 956 mSDsluCounter, 6413 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 8291 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:05,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 8291 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:22:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12048 states. [2025-03-08 05:22:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12048 to 12019. [2025-03-08 05:22:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12019 states, 9297 states have (on average 1.6074002366354738) internal successors, (14944), 9518 states have internal predecessors, (14944), 2127 states have call successors, (2127), 497 states have call predecessors, (2127), 594 states have return successors, (2867), 2093 states have call predecessors, (2867), 2113 states have call successors, (2867) [2025-03-08 05:22:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12019 states to 12019 states and 19938 transitions. [2025-03-08 05:22:05,503 INFO L78 Accepts]: Start accepts. Automaton has 12019 states and 19938 transitions. Word has length 167 [2025-03-08 05:22:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:05,504 INFO L471 AbstractCegarLoop]: Abstraction has 12019 states and 19938 transitions. [2025-03-08 05:22:05,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:22:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12019 states and 19938 transitions. [2025-03-08 05:22:05,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 05:22:05,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:05,507 INFO L218 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] [2025-03-08 05:22:05,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-08 05:22:05,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:05,708 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:05,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:05,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1877290773, now seen corresponding path program 1 times [2025-03-08 05:22:05,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:05,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363966729] [2025-03-08 05:22:05,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:05,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:05,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:22:05,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:22:05,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:05,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:22:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363966729] [2025-03-08 05:22:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363966729] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676366407] [2025-03-08 05:22:05,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:05,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:05,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:05,934 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:05,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-08 05:22:06,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:22:06,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:22:06,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:06,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:06,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:22:06,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:06,268 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:22:06,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676366407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:06,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:06,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:22:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892957507] [2025-03-08 05:22:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:06,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:22:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:06,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:22:06,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:22:06,269 INFO L87 Difference]: Start difference. First operand 12019 states and 19938 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2025-03-08 05:22:06,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:06,995 INFO L93 Difference]: Finished difference Result 24112 states and 40746 transitions. [2025-03-08 05:22:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:22:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 167 [2025-03-08 05:22:06,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:07,075 INFO L225 Difference]: With dead ends: 24112 [2025-03-08 05:22:07,076 INFO L226 Difference]: Without dead ends: 12163 [2025-03-08 05:22:07,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:22:07,150 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 25 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:07,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3003 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:22:07,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12163 states. [2025-03-08 05:22:07,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12163 to 12163. [2025-03-08 05:22:07,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12163 states, 9417 states have (on average 1.602208771370925) internal successors, (15088), 9638 states have internal predecessors, (15088), 2127 states have call successors, (2127), 521 states have call predecessors, (2127), 618 states have return successors, (2867), 2093 states have call predecessors, (2867), 2113 states have call successors, (2867) [2025-03-08 05:22:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 20082 transitions. [2025-03-08 05:22:07,852 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 20082 transitions. Word has length 167 [2025-03-08 05:22:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:07,853 INFO L471 AbstractCegarLoop]: Abstraction has 12163 states and 20082 transitions. [2025-03-08 05:22:07,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2025-03-08 05:22:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 20082 transitions. [2025-03-08 05:22:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-08 05:22:07,856 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:07,856 INFO L218 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, 1, 1, 1, 1, 1] [2025-03-08 05:22:07,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-08 05:22:08,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:08,056 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:08,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash -786323481, now seen corresponding path program 1 times [2025-03-08 05:22:08,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:08,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998419072] [2025-03-08 05:22:08,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:08,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:08,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 05:22:08,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 05:22:08,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:08,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:22:08,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:08,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998419072] [2025-03-08 05:22:08,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998419072] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:08,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548064548] [2025-03-08 05:22:08,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:08,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:08,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:08,252 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:08,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-08 05:22:08,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-08 05:22:08,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-08 05:22:08,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:08,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:08,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 05:22:08,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 05:22:08,608 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:08,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548064548] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:08,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:08,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:22:08,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984301061] [2025-03-08 05:22:08,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:08,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:22:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:08,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:22:08,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:22:08,610 INFO L87 Difference]: Start difference. First operand 12163 states and 20082 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-08 05:22:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:12,485 INFO L93 Difference]: Finished difference Result 39743 states and 67455 transitions. [2025-03-08 05:22:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:22:12,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 168 [2025-03-08 05:22:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:12,603 INFO L225 Difference]: With dead ends: 39743 [2025-03-08 05:22:12,603 INFO L226 Difference]: Without dead ends: 27646 [2025-03-08 05:22:12,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2025-03-08 05:22:12,668 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 3505 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 5914 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 6782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 5914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:12,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3621 Valid, 1743 Invalid, 6782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 5914 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 05:22:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27646 states. [2025-03-08 05:22:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27646 to 26703. [2025-03-08 05:22:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26703 states, 20686 states have (on average 1.5944600212704245) internal successors, (32983), 21154 states have internal predecessors, (32983), 4595 states have call successors, (4595), 1240 states have call predecessors, (4595), 1421 states have return successors, (6804), 4495 states have call predecessors, (6804), 4567 states have call successors, (6804) [2025-03-08 05:22:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26703 states to 26703 states and 44382 transitions. [2025-03-08 05:22:13,789 INFO L78 Accepts]: Start accepts. Automaton has 26703 states and 44382 transitions. Word has length 168 [2025-03-08 05:22:13,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:13,789 INFO L471 AbstractCegarLoop]: Abstraction has 26703 states and 44382 transitions. [2025-03-08 05:22:13,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-08 05:22:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 26703 states and 44382 transitions. [2025-03-08 05:22:13,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-08 05:22:13,793 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:13,793 INFO L218 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, 1, 1, 1, 1, 1, 1] [2025-03-08 05:22:13,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-08 05:22:13,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-03-08 05:22:13,994 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:13,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 896302147, now seen corresponding path program 1 times [2025-03-08 05:22:13,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:13,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171398359] [2025-03-08 05:22:13,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:13,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:14,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 05:22:14,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 05:22:14,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:14,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:22:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171398359] [2025-03-08 05:22:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171398359] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469528359] [2025-03-08 05:22:14,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:14,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:14,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:14,339 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:14,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-08 05:22:14,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 05:22:14,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 05:22:14,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:14,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:14,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 1672 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 05:22:14,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-08 05:22:14,767 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:14,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469528359] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:14,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:14,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2025-03-08 05:22:14,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406889710] [2025-03-08 05:22:14,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:14,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:22:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:14,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:22:14,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-08 05:22:14,769 INFO L87 Difference]: Start difference. First operand 26703 states and 44382 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:22:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:17,170 INFO L93 Difference]: Finished difference Result 61090 states and 103370 transitions. [2025-03-08 05:22:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 05:22:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2025-03-08 05:22:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:17,311 INFO L225 Difference]: With dead ends: 61090 [2025-03-08 05:22:17,311 INFO L226 Difference]: Without dead ends: 34446 [2025-03-08 05:22:17,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2025-03-08 05:22:17,414 INFO L435 NwaCegarLoop]: 1281 mSDtfsCounter, 1815 mSDsluCounter, 4531 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 5812 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:17,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 5812 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:22:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34446 states. [2025-03-08 05:22:18,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34446 to 34265. [2025-03-08 05:22:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34265 states, 27041 states have (on average 1.5895122221811324) internal successors, (42982), 27582 states have internal predecessors, (42982), 5176 states have call successors, (5176), 1760 states have call predecessors, (5176), 2047 states have return successors, (10041), 5109 states have call predecessors, (10041), 5128 states have call successors, (10041) [2025-03-08 05:22:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34265 states to 34265 states and 58199 transitions. [2025-03-08 05:22:18,910 INFO L78 Accepts]: Start accepts. Automaton has 34265 states and 58199 transitions. Word has length 169 [2025-03-08 05:22:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:18,911 INFO L471 AbstractCegarLoop]: Abstraction has 34265 states and 58199 transitions. [2025-03-08 05:22:18,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:22:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 34265 states and 58199 transitions. [2025-03-08 05:22:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-08 05:22:18,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:18,914 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:22:18,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-03-08 05:22:19,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:19,114 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:19,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1934446724, now seen corresponding path program 1 times [2025-03-08 05:22:19,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:19,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238158850] [2025-03-08 05:22:19,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:19,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-08 05:22:19,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-08 05:22:19,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:19,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 05:22:19,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238158850] [2025-03-08 05:22:19,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238158850] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499792498] [2025-03-08 05:22:19,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:19,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:19,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:19,300 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:19,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-08 05:22:19,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-08 05:22:19,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-08 05:22:19,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:19,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:19,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 05:22:19,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:22:19,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:19,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499792498] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:19,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:19,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:22:19,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39452730] [2025-03-08 05:22:19,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:19,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:22:19,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:19,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:22:19,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:22:19,657 INFO L87 Difference]: Start difference. First operand 34265 states and 58199 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-08 05:22:24,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:24,365 INFO L93 Difference]: Finished difference Result 65940 states and 111982 transitions. [2025-03-08 05:22:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:22:24,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 170 [2025-03-08 05:22:24,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:24,549 INFO L225 Difference]: With dead ends: 65940 [2025-03-08 05:22:24,549 INFO L226 Difference]: Without dead ends: 35564 [2025-03-08 05:22:24,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2025-03-08 05:22:24,724 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 3162 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 6085 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3278 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 6831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 6085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:24,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3278 Valid, 1832 Invalid, 6831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 6085 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-08 05:22:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35564 states. [2025-03-08 05:22:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35564 to 34247. [2025-03-08 05:22:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34247 states, 27023 states have (on average 1.5885726973319025) internal successors, (42928), 27564 states have internal predecessors, (42928), 5176 states have call successors, (5176), 1760 states have call predecessors, (5176), 2047 states have return successors, (10041), 5109 states have call predecessors, (10041), 5128 states have call successors, (10041) [2025-03-08 05:22:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34247 states to 34247 states and 58145 transitions. [2025-03-08 05:22:26,803 INFO L78 Accepts]: Start accepts. Automaton has 34247 states and 58145 transitions. Word has length 170 [2025-03-08 05:22:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:26,804 INFO L471 AbstractCegarLoop]: Abstraction has 34247 states and 58145 transitions. [2025-03-08 05:22:26,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-08 05:22:26,804 INFO L276 IsEmpty]: Start isEmpty. Operand 34247 states and 58145 transitions. [2025-03-08 05:22:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-08 05:22:26,809 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:26,809 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:22:26,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-08 05:22:27,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:27,010 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:27,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1973065233, now seen corresponding path program 1 times [2025-03-08 05:22:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:27,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435629301] [2025-03-08 05:22:27,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:27,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:27,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 05:22:27,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 05:22:27,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:27,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-08 05:22:27,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:27,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435629301] [2025-03-08 05:22:27,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435629301] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:27,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059719118] [2025-03-08 05:22:27,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:27,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:27,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:27,302 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:27,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-08 05:22:27,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 05:22:27,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 05:22:27,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:27,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:27,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 05:22:27,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 05:22:27,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059719118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:27,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:22:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074667500] [2025-03-08 05:22:27,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:27,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:22:27,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:27,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:22:27,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:22:27,720 INFO L87 Difference]: Start difference. First operand 34247 states and 58145 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-08 05:22:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:34,110 INFO L93 Difference]: Finished difference Result 103251 states and 191443 transitions. [2025-03-08 05:22:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:22:34,110 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 171 [2025-03-08 05:22:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:34,541 INFO L225 Difference]: With dead ends: 103251 [2025-03-08 05:22:34,541 INFO L226 Difference]: Without dead ends: 69051 [2025-03-08 05:22:34,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2025-03-08 05:22:34,838 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 5602 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 3560 mSolverCounterSat, 1479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5712 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 5039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1479 IncrementalHoareTripleChecker+Valid, 3560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:34,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5712 Valid, 1255 Invalid, 5039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1479 Valid, 3560 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-08 05:22:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69051 states. [2025-03-08 05:22:38,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69051 to 58967. [2025-03-08 05:22:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58967 states, 46463 states have (on average 1.5683662268902137) internal successors, (72871), 47480 states have internal predecessors, (72871), 8888 states have call successors, (8888), 3061 states have call predecessors, (8888), 3615 states have return successors, (17355), 8766 states have call predecessors, (17355), 8835 states have call successors, (17355) [2025-03-08 05:22:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58967 states to 58967 states and 99114 transitions. [2025-03-08 05:22:39,095 INFO L78 Accepts]: Start accepts. Automaton has 58967 states and 99114 transitions. Word has length 171 [2025-03-08 05:22:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:39,095 INFO L471 AbstractCegarLoop]: Abstraction has 58967 states and 99114 transitions. [2025-03-08 05:22:39,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 5 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-08 05:22:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 58967 states and 99114 transitions. [2025-03-08 05:22:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-08 05:22:39,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:39,098 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:22:39,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-08 05:22:39,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-08 05:22:39,298 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:39,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:39,299 INFO L85 PathProgramCache]: Analyzing trace with hash -883713444, now seen corresponding path program 1 times [2025-03-08 05:22:39,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:39,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859349802] [2025-03-08 05:22:39,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:39,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:39,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 05:22:39,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 05:22:39,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:39,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 05:22:39,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:39,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859349802] [2025-03-08 05:22:39,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859349802] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:39,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345459479] [2025-03-08 05:22:39,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:39,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:39,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:39,671 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:39,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-08 05:22:39,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 05:22:39,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 05:22:39,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:39,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:39,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 1679 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:22:39,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 05:22:39,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:39,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345459479] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:39,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:39,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:22:39,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493401248] [2025-03-08 05:22:39,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:39,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:22:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:39,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:22:39,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:22:39,932 INFO L87 Difference]: Start difference. First operand 58967 states and 99114 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (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) [2025-03-08 05:22:43,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:22:43,156 INFO L93 Difference]: Finished difference Result 118390 states and 205384 transitions. [2025-03-08 05:22:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:22:43,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (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 172 [2025-03-08 05:22:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:22:43,524 INFO L225 Difference]: With dead ends: 118390 [2025-03-08 05:22:43,524 INFO L226 Difference]: Without dead ends: 58790 [2025-03-08 05:22:43,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:22:43,953 INFO L435 NwaCegarLoop]: 1011 mSDtfsCounter, 30 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:22:43,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2999 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:22:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58790 states. [2025-03-08 05:22:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58790 to 58790. [2025-03-08 05:22:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58790 states, 46286 states have (on average 1.5590675366201443) internal successors, (72163), 47303 states have internal predecessors, (72163), 8888 states have call successors, (8888), 3061 states have call predecessors, (8888), 3615 states have return successors, (17355), 8766 states have call predecessors, (17355), 8835 states have call successors, (17355) [2025-03-08 05:22:47,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58790 states to 58790 states and 98406 transitions. [2025-03-08 05:22:47,051 INFO L78 Accepts]: Start accepts. Automaton has 58790 states and 98406 transitions. Word has length 172 [2025-03-08 05:22:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:22:47,052 INFO L471 AbstractCegarLoop]: Abstraction has 58790 states and 98406 transitions. [2025-03-08 05:22:47,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (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) [2025-03-08 05:22:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 58790 states and 98406 transitions. [2025-03-08 05:22:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-08 05:22:47,055 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:22:47,055 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:22:47,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-08 05:22:47,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-08 05:22:47,256 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:22:47,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:22:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash -801183331, now seen corresponding path program 1 times [2025-03-08 05:22:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:22:47,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515161869] [2025-03-08 05:22:47,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:22:47,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 05:22:47,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 05:22:47,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:47,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:22:47,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:22:47,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515161869] [2025-03-08 05:22:47,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515161869] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:22:47,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415498698] [2025-03-08 05:22:47,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:22:47,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:22:47,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:22:47,436 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:22:47,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-08 05:22:47,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 05:22:47,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 05:22:47,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:22:47,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:22:47,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 05:22:47,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:22:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:22:47,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:22:47,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415498698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:22:47,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:22:47,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:22:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071085363] [2025-03-08 05:22:47,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:22:47,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:22:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:22:47,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:22:47,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:22:47,803 INFO L87 Difference]: Start difference. First operand 58790 states and 98406 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 5 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18)