./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_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_spec2_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 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:26:47,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:26:47,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:26:47,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:26:47,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:26:47,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:26:47,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:26:47,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:26:47,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:26:47,875 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:26:47,875 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:26:47,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:26:47,876 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:26:47,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:26:47,876 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:26:47,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:26:47,877 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:26:47,878 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:26:47,878 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:26:47,878 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:26:47,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:26:47,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:26:47,878 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:26:47,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:26:47,879 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:26:47,879 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 -> 256d604ca5845ed70fae4c0c59880096896900821991ad09252cbc35739a584c [2025-03-08 05:26:48,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:26:48,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:26:48,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:26:48,091 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:26:48,091 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:26:48,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2025-03-08 05:26:49,192 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcab74e4/12e07dedc18e41d49d0a5bd02131463d/FLAG157772428 [2025-03-08 05:26:49,544 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:26:49,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2025-03-08 05:26:49,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcab74e4/12e07dedc18e41d49d0a5bd02131463d/FLAG157772428 [2025-03-08 05:26:49,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fcab74e4/12e07dedc18e41d49d0a5bd02131463d [2025-03-08 05:26:49,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:26:49,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:26:49,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:26:49,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:26:49,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:26:49,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:26:49" (1/1) ... [2025-03-08 05:26:49,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebe9ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:49, skipping insertion in model container [2025-03-08 05:26:49,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:26:49" (1/1) ... [2025-03-08 05:26:49,799 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:26:50,144 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_spec2_product32.cil.c[40079,40092] [2025-03-08 05:26:50,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:26:50,228 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:26:50,234 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [48] [2025-03-08 05:26:50,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [236] [2025-03-08 05:26:50,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [904] [2025-03-08 05:26:50,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1270] [2025-03-08 05:26:50,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1308] [2025-03-08 05:26:50,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1406] [2025-03-08 05:26:50,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1420] [2025-03-08 05:26:50,236 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1540] [2025-03-08 05:26:50,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1891] [2025-03-08 05:26:50,237 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1900] [2025-03-08 05:26:50,271 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_spec2_product32.cil.c[40079,40092] [2025-03-08 05:26:50,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:26:50,328 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:26:50,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50 WrapperNode [2025-03-08 05:26:50,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:26:50,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:26:50,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:26:50,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:26:50,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,392 INFO L138 Inliner]: procedures = 99, calls = 355, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 977 [2025-03-08 05:26:50,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:26:50,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:26:50,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:26:50,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:26:50,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,431 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 05:26:50,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,443 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:26:50,462 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:26:50,462 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:26:50,462 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:26:50,466 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (1/1) ... [2025-03-08 05:26:50,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:26:50,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:26:50,494 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 05:26:50,500 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 05:26:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-08 05:26:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-08 05:26:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-08 05:26:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-08 05:26:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-08 05:26:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-08 05:26:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:26:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:26:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-08 05:26:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-08 05:26:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-08 05:26:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-08 05:26:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-08 05:26:50,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-08 05:26:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-08 05:26:50,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-08 05:26:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-08 05:26:50,518 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-08 05:26:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-08 05:26:50,518 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-08 05:26:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-08 05:26:50,519 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-08 05:26:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-08 05:26:50,521 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-08 05:26:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-08 05:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-08 05:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-08 05:26:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-08 05:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:26:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-08 05:26:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-08 05:26:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-08 05:26:50,522 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-08 05:26:50,683 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:26:50,686 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:26:50,747 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2847-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~25#1; [2025-03-08 05:26:50,747 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2875: #res#1 := ~retValue_acc~26#1; [2025-03-08 05:26:50,767 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1459: #res := ~retValue_acc~8; [2025-03-08 05:26:50,794 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3550: #res := ~retValue_acc~30; [2025-03-08 05:26:50,856 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2728-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~22#1; [2025-03-08 05:26:50,856 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2757: #res#1 := ~retValue_acc~23#1; [2025-03-08 05:26:50,856 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2791-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~24#1; [2025-03-08 05:26:50,860 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2920: #res := ~retValue_acc~28; [2025-03-08 05:26:51,011 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2688: #res := ~retValue_acc~21; [2025-03-08 05:26:51,130 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2323-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-08 05:26:51,130 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2336-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-08 05:26:51,132 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2160: #res := ~retValue_acc~15; [2025-03-08 05:26:51,136 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L901: #res := ~retValue_acc~2; [2025-03-08 05:26:51,149 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1537: #res := ~retValue_acc~10; [2025-03-08 05:26:51,151 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1974: #res := ~retValue_acc~13; [2025-03-08 05:26:51,156 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2151: #res := ~retValue_acc~14; [2025-03-08 05:26:51,274 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1498: #res := ~retValue_acc~9; [2025-03-08 05:26:51,288 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2194: #res := ~retValue_acc~16; [2025-03-08 05:26:51,323 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2243-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-03-08 05:26:51,375 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L590: #res := ~retValue_acc~1; [2025-03-08 05:26:51,444 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1305-1: valid_product_#res#1 := valid_product_~retValue_acc~7#1; [2025-03-08 05:26:51,444 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1888-1: main_#res#1 := main_~retValue_acc~12#1; [2025-03-08 05:26:51,452 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L354: #res := ~retValue_acc~0; [2025-03-08 05:26:51,534 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2906-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~27#1; [2025-03-08 05:26:51,675 INFO L? ?]: Removed 485 outVars from TransFormulas that were not future-live. [2025-03-08 05:26:51,675 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:26:51,692 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:26:51,692 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:26:51,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:26:51 BoogieIcfgContainer [2025-03-08 05:26:51,692 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:26:51,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:26:51,699 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:26:51,705 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:26:51,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:26:49" (1/3) ... [2025-03-08 05:26:51,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276bd583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:26:51, skipping insertion in model container [2025-03-08 05:26:51,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:26:50" (2/3) ... [2025-03-08 05:26:51,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276bd583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:26:51, skipping insertion in model container [2025-03-08 05:26:51,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:26:51" (3/3) ... [2025-03-08 05:26:51,708 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2025-03-08 05:26:51,719 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:26:51,721 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec2_product32.cil.c that has 28 procedures, 603 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:26:51,774 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:26:51,783 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;@552efd01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:26:51,783 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:26:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 469 states have (on average 1.6780383795309168) internal successors, (787), 492 states have internal predecessors, (787), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:26:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-08 05:26:51,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:51,799 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:51,799 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:51,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1051434821, now seen corresponding path program 1 times [2025-03-08 05:26:51,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:51,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860725707] [2025-03-08 05:26:51,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:51,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-08 05:26:51,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-08 05:26:51,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:51,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:52,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:52,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860725707] [2025-03-08 05:26:52,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860725707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:52,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:52,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:26:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273820381] [2025-03-08 05:26:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:52,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:26:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:52,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:26:52,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:52,294 INFO L87 Difference]: Start difference. First operand has 603 states, 469 states have (on average 1.6780383795309168) internal successors, (787), 492 states have internal predecessors, (787), 105 states have call successors, (105), 27 states have call predecessors, (105), 27 states have return successors, (105), 98 states have call predecessors, (105), 105 states have call successors, (105) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:52,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:52,428 INFO L93 Difference]: Finished difference Result 1186 states and 1969 transitions. [2025-03-08 05:26:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:26:52,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2025-03-08 05:26:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:52,449 INFO L225 Difference]: With dead ends: 1186 [2025-03-08 05:26:52,449 INFO L226 Difference]: Without dead ends: 595 [2025-03-08 05:26:52,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:52,460 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 5 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:52,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2927 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:52,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2025-03-08 05:26:52,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2025-03-08 05:26:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.676025917926566) internal successors, (776), 484 states have internal predecessors, (776), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:52,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 981 transitions. [2025-03-08 05:26:52,541 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 981 transitions. Word has length 60 [2025-03-08 05:26:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:52,542 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 981 transitions. [2025-03-08 05:26:52,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 981 transitions. [2025-03-08 05:26:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-08 05:26:52,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:52,546 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:52,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 05:26:52,547 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:52,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1767199209, now seen corresponding path program 1 times [2025-03-08 05:26:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995277015] [2025-03-08 05:26:52,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:52,565 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-08 05:26:52,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 05:26:52,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:52,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:52,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:52,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995277015] [2025-03-08 05:26:52,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995277015] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:52,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:52,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:26:52,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519939248] [2025-03-08 05:26:52,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:52,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:26:52,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:52,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:26:52,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:52,705 INFO L87 Difference]: Start difference. First operand 595 states and 981 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:52,772 INFO L93 Difference]: Finished difference Result 1172 states and 1939 transitions. [2025-03-08 05:26:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:26:52,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2025-03-08 05:26:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:52,778 INFO L225 Difference]: With dead ends: 1172 [2025-03-08 05:26:52,778 INFO L226 Difference]: Without dead ends: 595 [2025-03-08 05:26:52,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:52,781 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 4 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:52,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2906 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2025-03-08 05:26:52,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2025-03-08 05:26:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.673866090712743) internal successors, (775), 484 states have internal predecessors, (775), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 980 transitions. [2025-03-08 05:26:52,818 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 980 transitions. Word has length 62 [2025-03-08 05:26:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:52,818 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 980 transitions. [2025-03-08 05:26:52,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 980 transitions. [2025-03-08 05:26:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-08 05:26:52,820 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:52,820 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:52,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 05:26:52,820 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:52,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1444510832, now seen corresponding path program 1 times [2025-03-08 05:26:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260660210] [2025-03-08 05:26:52,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:52,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-08 05:26:52,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-08 05:26:52,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:52,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:52,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260660210] [2025-03-08 05:26:52,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260660210] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:52,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:52,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:26:52,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855567833] [2025-03-08 05:26:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:52,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:26:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:52,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:26:52,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:52,971 INFO L87 Difference]: Start difference. First operand 595 states and 980 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:53,029 INFO L93 Difference]: Finished difference Result 1172 states and 1938 transitions. [2025-03-08 05:26:53,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:26:53,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2025-03-08 05:26:53,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:53,035 INFO L225 Difference]: With dead ends: 1172 [2025-03-08 05:26:53,035 INFO L226 Difference]: Without dead ends: 595 [2025-03-08 05:26:53,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:53,039 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 3 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:53,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2906 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2025-03-08 05:26:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2025-03-08 05:26:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.6717062634989202) internal successors, (774), 484 states have internal predecessors, (774), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 979 transitions. [2025-03-08 05:26:53,065 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 979 transitions. Word has length 63 [2025-03-08 05:26:53,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:53,065 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 979 transitions. [2025-03-08 05:26:53,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 979 transitions. [2025-03-08 05:26:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 05:26:53,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:53,071 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:53,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 05:26:53,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:53,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:53,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1749953396, now seen corresponding path program 1 times [2025-03-08 05:26:53,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:53,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789646589] [2025-03-08 05:26:53,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:53,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:53,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 05:26:53,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 05:26:53,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:53,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:53,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:53,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789646589] [2025-03-08 05:26:53,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789646589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:53,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:26:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076402209] [2025-03-08 05:26:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:53,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:26:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:53,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:26:53,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:53,218 INFO L87 Difference]: Start difference. First operand 595 states and 979 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:53,265 INFO L93 Difference]: Finished difference Result 1172 states and 1937 transitions. [2025-03-08 05:26:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:26:53,265 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2025-03-08 05:26:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:53,270 INFO L225 Difference]: With dead ends: 1172 [2025-03-08 05:26:53,270 INFO L226 Difference]: Without dead ends: 595 [2025-03-08 05:26:53,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:53,273 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 2 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:53,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2906 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:53,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2025-03-08 05:26:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2025-03-08 05:26:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.6695464362850971) internal successors, (773), 484 states have internal predecessors, (773), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 978 transitions. [2025-03-08 05:26:53,293 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 978 transitions. Word has length 64 [2025-03-08 05:26:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:53,293 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 978 transitions. [2025-03-08 05:26:53,293 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, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,294 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 978 transitions. [2025-03-08 05:26:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 05:26:53,298 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:53,298 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:53,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 05:26:53,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:53,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:53,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2139549907, now seen corresponding path program 1 times [2025-03-08 05:26:53,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:53,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779991536] [2025-03-08 05:26:53,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:53,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:53,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 05:26:53,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 05:26:53,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:53,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:53,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:53,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779991536] [2025-03-08 05:26:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779991536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:53,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:26:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828798338] [2025-03-08 05:26:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:53,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:26:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:53,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:26:53,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:53,416 INFO L87 Difference]: Start difference. First operand 595 states and 978 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:53,460 INFO L93 Difference]: Finished difference Result 1172 states and 1936 transitions. [2025-03-08 05:26:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:26:53,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-03-08 05:26:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:53,466 INFO L225 Difference]: With dead ends: 1172 [2025-03-08 05:26:53,466 INFO L226 Difference]: Without dead ends: 595 [2025-03-08 05:26:53,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:53,469 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 1 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2906 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:53,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2906 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2025-03-08 05:26:53,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2025-03-08 05:26:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 463 states have (on average 1.6673866090712743) internal successors, (772), 484 states have internal predecessors, (772), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 977 transitions. [2025-03-08 05:26:53,499 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 977 transitions. Word has length 65 [2025-03-08 05:26:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:53,500 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 977 transitions. [2025-03-08 05:26:53,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 977 transitions. [2025-03-08 05:26:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 05:26:53,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:53,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:53,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 05:26:53,502 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:53,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1366578385, now seen corresponding path program 1 times [2025-03-08 05:26:53,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:53,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287543927] [2025-03-08 05:26:53,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:53,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:53,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 05:26:53,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 05:26:53,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:53,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:53,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:53,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:53,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287543927] [2025-03-08 05:26:53,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287543927] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:53,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:53,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 05:26:53,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435692610] [2025-03-08 05:26:53,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:53,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 05:26:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:53,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 05:26:53,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:26:53,702 INFO L87 Difference]: Start difference. First operand 595 states and 977 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-08 05:26:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:53,802 INFO L93 Difference]: Finished difference Result 1138 states and 1868 transitions. [2025-03-08 05:26:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:26:53,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2025-03-08 05:26:53,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:53,806 INFO L225 Difference]: With dead ends: 1138 [2025-03-08 05:26:53,806 INFO L226 Difference]: Without dead ends: 610 [2025-03-08 05:26:53,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 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 05:26:53,808 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 91 mSDsluCounter, 6672 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 7637 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:53,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 7637 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:26:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2025-03-08 05:26:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 608. [2025-03-08 05:26:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 473 states have (on average 1.6638477801268499) internal successors, (787), 496 states have internal predecessors, (787), 106 states have call successors, (106), 27 states have call predecessors, (106), 28 states have return successors, (103), 98 states have call predecessors, (103), 101 states have call successors, (103) [2025-03-08 05:26:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 996 transitions. [2025-03-08 05:26:53,832 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 996 transitions. Word has length 66 [2025-03-08 05:26:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:53,835 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 996 transitions. [2025-03-08 05:26:53,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-08 05:26:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 996 transitions. [2025-03-08 05:26:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 05:26:53,836 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:53,836 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:53,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 05:26:53,836 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:53,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:53,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1374337744, now seen corresponding path program 1 times [2025-03-08 05:26:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:53,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727561597] [2025-03-08 05:26:53,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:53,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:53,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 05:26:53,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 05:26:53,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:53,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:53,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:53,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727561597] [2025-03-08 05:26:53,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727561597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:53,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:53,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:26:53,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842317970] [2025-03-08 05:26:53,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:53,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:26:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:53,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:26:53,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:53,918 INFO L87 Difference]: Start difference. First operand 608 states and 996 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:53,953 INFO L93 Difference]: Finished difference Result 1190 states and 1962 transitions. [2025-03-08 05:26:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:26:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2025-03-08 05:26:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:53,957 INFO L225 Difference]: With dead ends: 1190 [2025-03-08 05:26:53,957 INFO L226 Difference]: Without dead ends: 589 [2025-03-08 05:26:53,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:26:53,960 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 0 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2908 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:53,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2908 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2025-03-08 05:26:53,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2025-03-08 05:26:53,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6586433260393874) internal successors, (758), 478 states have internal predecessors, (758), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:53,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 963 transitions. [2025-03-08 05:26:53,982 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 963 transitions. Word has length 66 [2025-03-08 05:26:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:53,982 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 963 transitions. [2025-03-08 05:26:53,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:53,982 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 963 transitions. [2025-03-08 05:26:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 05:26:53,984 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:53,984 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:53,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 05:26:53,984 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:53,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:53,985 INFO L85 PathProgramCache]: Analyzing trace with hash 172617274, now seen corresponding path program 1 times [2025-03-08 05:26:53,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963166911] [2025-03-08 05:26:53,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:53,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 05:26:54,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 05:26:54,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:54,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:54,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:54,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963166911] [2025-03-08 05:26:54,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963166911] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:54,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:54,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:26:54,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952885278] [2025-03-08 05:26:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:54,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:26:54,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:54,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:26:54,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:26:54,114 INFO L87 Difference]: Start difference. First operand 589 states and 963 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:54,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:54,270 INFO L93 Difference]: Finished difference Result 1135 states and 1860 transitions. [2025-03-08 05:26:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:26:54,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2025-03-08 05:26:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:54,274 INFO L225 Difference]: With dead ends: 1135 [2025-03-08 05:26:54,274 INFO L226 Difference]: Without dead ends: 598 [2025-03-08 05:26:54,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 05:26:54,276 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 55 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 4571 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:54,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 4571 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:26:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-03-08 05:26:54,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 589. [2025-03-08 05:26:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.649890590809628) internal successors, (754), 478 states have internal predecessors, (754), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 959 transitions. [2025-03-08 05:26:54,292 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 959 transitions. Word has length 67 [2025-03-08 05:26:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:54,292 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 959 transitions. [2025-03-08 05:26:54,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 959 transitions. [2025-03-08 05:26:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 05:26:54,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:54,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:54,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 05:26:54,294 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:54,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:54,294 INFO L85 PathProgramCache]: Analyzing trace with hash 700320984, now seen corresponding path program 1 times [2025-03-08 05:26:54,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:54,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853818874] [2025-03-08 05:26:54,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:54,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:54,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 05:26:54,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 05:26:54,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:54,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853818874] [2025-03-08 05:26:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853818874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:26:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913687393] [2025-03-08 05:26:54,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:54,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:26:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:54,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:26:54,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:26:54,388 INFO L87 Difference]: Start difference. First operand 589 states and 959 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:54,514 INFO L93 Difference]: Finished difference Result 1135 states and 1856 transitions. [2025-03-08 05:26:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:26:54,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2025-03-08 05:26:54,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:54,519 INFO L225 Difference]: With dead ends: 1135 [2025-03-08 05:26:54,519 INFO L226 Difference]: Without dead ends: 598 [2025-03-08 05:26:54,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 05:26:54,521 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 54 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 4571 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:54,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 4571 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:26:54,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-03-08 05:26:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 589. [2025-03-08 05:26:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6411378555798688) internal successors, (750), 478 states have internal predecessors, (750), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 955 transitions. [2025-03-08 05:26:54,537 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 955 transitions. Word has length 68 [2025-03-08 05:26:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:54,538 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 955 transitions. [2025-03-08 05:26:54,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 955 transitions. [2025-03-08 05:26:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 05:26:54,539 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:54,539 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:54,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 05:26:54,539 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:54,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash 900733335, now seen corresponding path program 1 times [2025-03-08 05:26:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:54,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276777238] [2025-03-08 05:26:54,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:54,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:54,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 05:26:54,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 05:26:54,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:54,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:54,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:54,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:54,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276777238] [2025-03-08 05:26:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276777238] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:54,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:54,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:26:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330869987] [2025-03-08 05:26:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:54,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:26:54,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:54,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:26:54,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:26:54,627 INFO L87 Difference]: Start difference. First operand 589 states and 955 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:54,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:54,759 INFO L93 Difference]: Finished difference Result 1135 states and 1852 transitions. [2025-03-08 05:26:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:26:54,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2025-03-08 05:26:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:54,763 INFO L225 Difference]: With dead ends: 1135 [2025-03-08 05:26:54,764 INFO L226 Difference]: Without dead ends: 598 [2025-03-08 05:26:54,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 05:26:54,766 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 53 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:54,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 4553 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:26:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-03-08 05:26:54,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 589. [2025-03-08 05:26:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 457 states have (on average 1.6323851203501094) internal successors, (746), 478 states have internal predecessors, (746), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:54,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 951 transitions. [2025-03-08 05:26:54,781 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 951 transitions. Word has length 69 [2025-03-08 05:26:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:54,781 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 951 transitions. [2025-03-08 05:26:54,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 951 transitions. [2025-03-08 05:26:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 05:26:54,781 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:54,782 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:54,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 05:26:54,782 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:54,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:54,782 INFO L85 PathProgramCache]: Analyzing trace with hash -567696568, now seen corresponding path program 1 times [2025-03-08 05:26:54,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600224093] [2025-03-08 05:26:54,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:54,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 05:26:54,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 05:26:54,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:54,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:54,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:54,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600224093] [2025-03-08 05:26:54,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600224093] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:54,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:54,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:26:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29972231] [2025-03-08 05:26:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:54,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:26:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:54,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:26:54,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:26:54,874 INFO L87 Difference]: Start difference. First operand 589 states and 951 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-08 05:26:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:54,929 INFO L93 Difference]: Finished difference Result 1126 states and 1834 transitions. [2025-03-08 05:26:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:26:54,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2025-03-08 05:26:54,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:54,934 INFO L225 Difference]: With dead ends: 1126 [2025-03-08 05:26:54,935 INFO L226 Difference]: Without dead ends: 568 [2025-03-08 05:26:54,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:26:54,937 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 84 mSDsluCounter, 4627 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:54,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 5567 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2025-03-08 05:26:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2025-03-08 05:26:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 436 states have (on average 1.6330275229357798) internal successors, (712), 457 states have internal predecessors, (712), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 917 transitions. [2025-03-08 05:26:54,953 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 917 transitions. Word has length 69 [2025-03-08 05:26:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:54,953 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 917 transitions. [2025-03-08 05:26:54,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-08 05:26:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 917 transitions. [2025-03-08 05:26:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 05:26:54,955 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:54,955 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:54,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 05:26:54,955 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:54,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash -454951851, now seen corresponding path program 1 times [2025-03-08 05:26:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:54,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589471342] [2025-03-08 05:26:54,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:54,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 05:26:54,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 05:26:54,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:54,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:55,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:55,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589471342] [2025-03-08 05:26:55,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589471342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:55,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:55,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:26:55,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872691959] [2025-03-08 05:26:55,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:55,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:26:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:55,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:26:55,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:26:55,046 INFO L87 Difference]: Start difference. First operand 568 states and 917 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:55,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:55,105 INFO L93 Difference]: Finished difference Result 1105 states and 1800 transitions. [2025-03-08 05:26:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:26:55,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2025-03-08 05:26:55,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:55,110 INFO L225 Difference]: With dead ends: 1105 [2025-03-08 05:26:55,110 INFO L226 Difference]: Without dead ends: 568 [2025-03-08 05:26:55,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 05:26:55,113 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 17 mSDsluCounter, 3591 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4491 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:55,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4491 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:55,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2025-03-08 05:26:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2025-03-08 05:26:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 436 states have (on average 1.6307339449541285) internal successors, (711), 457 states have internal predecessors, (711), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:55,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 916 transitions. [2025-03-08 05:26:55,131 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 916 transitions. Word has length 70 [2025-03-08 05:26:55,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:55,131 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 916 transitions. [2025-03-08 05:26:55,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:55,131 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 916 transitions. [2025-03-08 05:26:55,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-08 05:26:55,132 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:55,132 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:55,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 05:26:55,132 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:55,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:55,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1489946868, now seen corresponding path program 1 times [2025-03-08 05:26:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:55,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320548785] [2025-03-08 05:26:55,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:55,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-08 05:26:55,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 05:26:55,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:55,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:55,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:55,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320548785] [2025-03-08 05:26:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320548785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:55,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:26:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21187351] [2025-03-08 05:26:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:55,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:26:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:55,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:26:55,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:26:55,238 INFO L87 Difference]: Start difference. First operand 568 states and 916 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:55,306 INFO L93 Difference]: Finished difference Result 1105 states and 1799 transitions. [2025-03-08 05:26:55,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:26:55,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2025-03-08 05:26:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:55,311 INFO L225 Difference]: With dead ends: 1105 [2025-03-08 05:26:55,311 INFO L226 Difference]: Without dead ends: 568 [2025-03-08 05:26:55,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 05:26:55,315 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 16 mSDsluCounter, 3591 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4491 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:55,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4491 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:26:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2025-03-08 05:26:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2025-03-08 05:26:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 436 states have (on average 1.628440366972477) internal successors, (710), 457 states have internal predecessors, (710), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 915 transitions. [2025-03-08 05:26:55,334 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 915 transitions. Word has length 71 [2025-03-08 05:26:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:55,335 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 915 transitions. [2025-03-08 05:26:55,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:26:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 915 transitions. [2025-03-08 05:26:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-08 05:26:55,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:55,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:55,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 05:26:55,336 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:55,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:55,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1621235758, now seen corresponding path program 1 times [2025-03-08 05:26:55,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:55,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775650433] [2025-03-08 05:26:55,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:55,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:55,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-08 05:26:55,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-08 05:26:55,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:55,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:55,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775650433] [2025-03-08 05:26:55,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775650433] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:55,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:55,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 05:26:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40416803] [2025-03-08 05:26:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:55,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 05:26:55,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:55,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 05:26:55,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:26:55,503 INFO L87 Difference]: Start difference. First operand 568 states and 915 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-08 05:26:55,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:55,585 INFO L93 Difference]: Finished difference Result 1099 states and 1787 transitions. [2025-03-08 05:26:55,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:26:55,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2025-03-08 05:26:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:55,590 INFO L225 Difference]: With dead ends: 1099 [2025-03-08 05:26:55,590 INFO L226 Difference]: Without dead ends: 568 [2025-03-08 05:26:55,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:26:55,594 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 6 mSDsluCounter, 7170 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8069 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:55,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8069 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:26:55,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2025-03-08 05:26:55,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2025-03-08 05:26:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 436 states have (on average 1.6261467889908257) internal successors, (709), 457 states have internal predecessors, (709), 105 states have call successors, (105), 27 states have call predecessors, (105), 26 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-08 05:26:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 914 transitions. [2025-03-08 05:26:55,611 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 914 transitions. Word has length 72 [2025-03-08 05:26:55,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:55,611 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 914 transitions. [2025-03-08 05:26:55,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-08 05:26:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 914 transitions. [2025-03-08 05:26:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 05:26:55,612 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:55,612 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:26:55,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 05:26:55,612 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:55,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1068604895, now seen corresponding path program 1 times [2025-03-08 05:26:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:55,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891844023] [2025-03-08 05:26:55,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:55,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:55,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 05:26:55,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 05:26:55,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:55,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:26:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:55,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891844023] [2025-03-08 05:26:55,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891844023] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:55,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:55,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:26:55,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087882871] [2025-03-08 05:26:55,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:55,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:26:55,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:55,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:26:55,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:26:55,828 INFO L87 Difference]: Start difference. First operand 568 states and 914 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-08 05:26:57,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:26:57,707 INFO L93 Difference]: Finished difference Result 1753 states and 2883 transitions. [2025-03-08 05:26:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:26:57,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 73 [2025-03-08 05:26:57,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:26:57,715 INFO L225 Difference]: With dead ends: 1753 [2025-03-08 05:26:57,716 INFO L226 Difference]: Without dead ends: 1230 [2025-03-08 05:26:57,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:26:57,720 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 3362 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1947 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 1947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-08 05:26:57,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3436 Valid, 1041 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 1947 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-08 05:26:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2025-03-08 05:26:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1108. [2025-03-08 05:26:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 855 states have (on average 1.6444444444444444) internal successors, (1406), 885 states have internal predecessors, (1406), 204 states have call successors, (204), 47 states have call predecessors, (204), 48 states have return successors, (206), 188 states have call predecessors, (206), 199 states have call successors, (206) [2025-03-08 05:26:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1816 transitions. [2025-03-08 05:26:57,778 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1816 transitions. Word has length 73 [2025-03-08 05:26:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:26:57,778 INFO L471 AbstractCegarLoop]: Abstraction has 1108 states and 1816 transitions. [2025-03-08 05:26:57,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2025-03-08 05:26:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1816 transitions. [2025-03-08 05:26:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-08 05:26:57,783 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:26:57,783 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-08 05:26:57,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 05:26:57,784 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:26:57,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:26:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1899594603, now seen corresponding path program 1 times [2025-03-08 05:26:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:26:57,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692720688] [2025-03-08 05:26:57,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:26:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:26:57,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-08 05:26:57,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-08 05:26:57,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:26:57,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:26:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:26:58,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:26:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692720688] [2025-03-08 05:26:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692720688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:26:58,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:26:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 05:26:58,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019235725] [2025-03-08 05:26:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:26:58,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 05:26:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:26:58,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 05:26:58,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:26:58,067 INFO L87 Difference]: Start difference. First operand 1108 states and 1816 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:27:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:02,560 INFO L93 Difference]: Finished difference Result 4060 states and 6669 transitions. [2025-03-08 05:27:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 05:27:02,560 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 127 [2025-03-08 05:27:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:02,576 INFO L225 Difference]: With dead ends: 4060 [2025-03-08 05:27:02,576 INFO L226 Difference]: Without dead ends: 2997 [2025-03-08 05:27:02,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2025-03-08 05:27:02,583 INFO L435 NwaCegarLoop]: 748 mSDtfsCounter, 2910 mSDsluCounter, 3793 mSDsCounter, 0 mSdLazyCounter, 10417 mSolverCounterSat, 950 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2991 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 11367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 950 IncrementalHoareTripleChecker+Valid, 10417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:02,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2991 Valid, 4541 Invalid, 11367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [950 Valid, 10417 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-08 05:27:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2025-03-08 05:27:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 2905. [2025-03-08 05:27:02,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2164 states have (on average 1.6090573012939002) internal successors, (3482), 2240 states have internal predecessors, (3482), 610 states have call successors, (610), 113 states have call predecessors, (610), 130 states have return successors, (643), 584 states have call predecessors, (643), 605 states have call successors, (643) [2025-03-08 05:27:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 4735 transitions. [2025-03-08 05:27:02,706 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 4735 transitions. Word has length 127 [2025-03-08 05:27:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:02,707 INFO L471 AbstractCegarLoop]: Abstraction has 2905 states and 4735 transitions. [2025-03-08 05:27:02,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 states have internal predecessors, (84), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:27:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 4735 transitions. [2025-03-08 05:27:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-08 05:27:02,710 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:02,710 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 05:27:02,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 05:27:02,711 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:02,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:02,711 INFO L85 PathProgramCache]: Analyzing trace with hash -586166260, now seen corresponding path program 1 times [2025-03-08 05:27:02,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:02,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828397139] [2025-03-08 05:27:02,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:02,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:02,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:27:02,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:27:02,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:02,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:02,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:02,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:02,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828397139] [2025-03-08 05:27:02,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828397139] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956978926] [2025-03-08 05:27:02,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:02,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:02,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:02,839 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 05:27:02,840 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 05:27:02,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:27:03,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:27:03,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:03,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:03,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 1695 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:27:03,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:03,218 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:03,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956978926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:03,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-08 05:27:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845466905] [2025-03-08 05:27:03,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:03,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:27:03,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:03,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:27:03,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:27:03,220 INFO L87 Difference]: Start difference. First operand 2905 states and 4735 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:03,701 INFO L93 Difference]: Finished difference Result 5829 states and 9692 transitions. [2025-03-08 05:27:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:27:03,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 128 [2025-03-08 05:27:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:03,716 INFO L225 Difference]: With dead ends: 5829 [2025-03-08 05:27:03,717 INFO L226 Difference]: Without dead ends: 2969 [2025-03-08 05:27:03,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:27:03,730 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 868 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:03,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 2284 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:27:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2025-03-08 05:27:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2969. [2025-03-08 05:27:03,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2220 states have (on average 1.6117117117117117) internal successors, (3578), 2296 states have internal predecessors, (3578), 610 states have call successors, (610), 121 states have call predecessors, (610), 138 states have return successors, (649), 584 states have call predecessors, (649), 605 states have call successors, (649) [2025-03-08 05:27:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4837 transitions. [2025-03-08 05:27:03,839 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4837 transitions. Word has length 128 [2025-03-08 05:27:03,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:03,840 INFO L471 AbstractCegarLoop]: Abstraction has 2969 states and 4837 transitions. [2025-03-08 05:27:03,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:03,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4837 transitions. [2025-03-08 05:27:03,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 05:27:03,843 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:03,843 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 05:27:03,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 05:27:04,048 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,SelfDestructingSolverStorable16 [2025-03-08 05:27:04,048 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:04,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash 657022140, now seen corresponding path program 1 times [2025-03-08 05:27:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:04,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360925433] [2025-03-08 05:27:04,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:04,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:04,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 05:27:04,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 05:27:04,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:04,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:04,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360925433] [2025-03-08 05:27:04,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360925433] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:04,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719189919] [2025-03-08 05:27:04,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:04,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:04,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:04,202 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 05:27:04,203 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 05:27:04,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 05:27:04,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 05:27:04,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:04,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:04,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:27:04,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:04,575 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:04,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719189919] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:04,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:04,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-08 05:27:04,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997417747] [2025-03-08 05:27:04,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:04,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:27:04,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:04,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:27:04,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:27:04,576 INFO L87 Difference]: Start difference. First operand 2969 states and 4837 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:04,990 INFO L93 Difference]: Finished difference Result 5957 states and 9878 transitions. [2025-03-08 05:27:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:27:04,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 130 [2025-03-08 05:27:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:05,007 INFO L225 Difference]: With dead ends: 5957 [2025-03-08 05:27:05,007 INFO L226 Difference]: Without dead ends: 3033 [2025-03-08 05:27:05,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:27:05,020 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 855 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:05,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2281 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:27:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2025-03-08 05:27:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 3033. [2025-03-08 05:27:05,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2276 states have (on average 1.6142355008787346) internal successors, (3674), 2352 states have internal predecessors, (3674), 610 states have call successors, (610), 129 states have call predecessors, (610), 146 states have return successors, (655), 584 states have call predecessors, (655), 605 states have call successors, (655) [2025-03-08 05:27:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4939 transitions. [2025-03-08 05:27:05,147 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4939 transitions. Word has length 130 [2025-03-08 05:27:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:05,147 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 4939 transitions. [2025-03-08 05:27:05,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4939 transitions. [2025-03-08 05:27:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-08 05:27:05,151 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:05,151 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 05:27:05,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 05:27:05,352 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,SelfDestructingSolverStorable17 [2025-03-08 05:27:05,352 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:05,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 444247916, now seen corresponding path program 1 times [2025-03-08 05:27:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:05,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361119105] [2025-03-08 05:27:05,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:05,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 05:27:05,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 05:27:05,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:05,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:05,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361119105] [2025-03-08 05:27:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361119105] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:05,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823621850] [2025-03-08 05:27:05,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:05,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:05,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:05,464 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 05:27:05,466 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 05:27:05,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 05:27:05,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 05:27:05,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:05,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:05,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:27:05,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:05,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823621850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:05,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:05,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-08 05:27:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272620447] [2025-03-08 05:27:05,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:05,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:27:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:05,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:27:05,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:27:05,806 INFO L87 Difference]: Start difference. First operand 3033 states and 4939 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:06,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:06,235 INFO L93 Difference]: Finished difference Result 6085 states and 10064 transitions. [2025-03-08 05:27:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:27:06,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 132 [2025-03-08 05:27:06,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:06,253 INFO L225 Difference]: With dead ends: 6085 [2025-03-08 05:27:06,253 INFO L226 Difference]: Without dead ends: 3097 [2025-03-08 05:27:06,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:27:06,262 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 854 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:06,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2278 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:27:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3097 states. [2025-03-08 05:27:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3097 to 3097. [2025-03-08 05:27:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 2332 states have (on average 1.6166380789022299) internal successors, (3770), 2408 states have internal predecessors, (3770), 610 states have call successors, (610), 137 states have call predecessors, (610), 154 states have return successors, (661), 584 states have call predecessors, (661), 605 states have call successors, (661) [2025-03-08 05:27:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 5041 transitions. [2025-03-08 05:27:06,365 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 5041 transitions. Word has length 132 [2025-03-08 05:27:06,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:06,366 INFO L471 AbstractCegarLoop]: Abstraction has 3097 states and 5041 transitions. [2025-03-08 05:27:06,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:06,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 5041 transitions. [2025-03-08 05:27:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 05:27:06,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:06,370 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 05:27:06,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 05:27:06,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:06,571 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:06,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash 321369410, now seen corresponding path program 1 times [2025-03-08 05:27:06,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:06,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624727501] [2025-03-08 05:27:06,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:06,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 05:27:06,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 05:27:06,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:06,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:06,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:06,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624727501] [2025-03-08 05:27:06,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624727501] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:06,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993192528] [2025-03-08 05:27:06,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:06,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:06,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:06,684 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 05:27:06,686 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 05:27:06,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 05:27:06,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 05:27:06,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:06,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:06,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:27:06,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:27:07,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:07,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993192528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:07,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:07,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2025-03-08 05:27:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463897047] [2025-03-08 05:27:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:07,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:27:07,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:07,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:27:07,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:27:07,038 INFO L87 Difference]: Start difference. First operand 3097 states and 5041 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:07,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:07,403 INFO L93 Difference]: Finished difference Result 6213 states and 10250 transitions. [2025-03-08 05:27:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:27:07,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 134 [2025-03-08 05:27:07,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:07,421 INFO L225 Difference]: With dead ends: 6213 [2025-03-08 05:27:07,421 INFO L226 Difference]: Without dead ends: 3161 [2025-03-08 05:27:07,432 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:27:07,432 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 834 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:07,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2275 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:27:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2025-03-08 05:27:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3161. [2025-03-08 05:27:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3161 states, 2388 states have (on average 1.61892797319933) internal successors, (3866), 2464 states have internal predecessors, (3866), 610 states have call successors, (610), 145 states have call predecessors, (610), 162 states have return successors, (667), 584 states have call predecessors, (667), 605 states have call successors, (667) [2025-03-08 05:27:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3161 states to 3161 states and 5143 transitions. [2025-03-08 05:27:07,534 INFO L78 Accepts]: Start accepts. Automaton has 3161 states and 5143 transitions. Word has length 134 [2025-03-08 05:27:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:07,535 INFO L471 AbstractCegarLoop]: Abstraction has 3161 states and 5143 transitions. [2025-03-08 05:27:07,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3161 states and 5143 transitions. [2025-03-08 05:27:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-08 05:27:07,538 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:07,538 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 05:27:07,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:27:07,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:07,739 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:07,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1380952140, now seen corresponding path program 1 times [2025-03-08 05:27:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:07,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485032153] [2025-03-08 05:27:07,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:07,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-08 05:27:07,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-08 05:27:07,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:07,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:08,021 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 05:27:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485032153] [2025-03-08 05:27:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485032153] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285437599] [2025-03-08 05:27:08,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:08,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:08,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:08,024 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 05:27:08,026 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 05:27:08,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-08 05:27:08,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-08 05:27:08,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:08,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:08,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 1703 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:27:08,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:27:08,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285437599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:08,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:08,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2025-03-08 05:27:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75487448] [2025-03-08 05:27:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:08,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:27:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:08,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:27:08,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:27:08,422 INFO L87 Difference]: Start difference. First operand 3161 states and 5143 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:27:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:08,734 INFO L93 Difference]: Finished difference Result 3270 states and 5325 transitions. [2025-03-08 05:27:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:27:08,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 136 [2025-03-08 05:27:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:08,749 INFO L225 Difference]: With dead ends: 3270 [2025-03-08 05:27:08,749 INFO L226 Difference]: Without dead ends: 3255 [2025-03-08 05:27:08,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:27:08,751 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 878 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:08,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1639 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 05:27:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3255 states. [2025-03-08 05:27:08,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3255 to 3167. [2025-03-08 05:27:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3167 states, 2394 states have (on average 1.617376775271512) internal successors, (3872), 2470 states have internal predecessors, (3872), 610 states have call successors, (610), 145 states have call predecessors, (610), 162 states have return successors, (667), 584 states have call predecessors, (667), 605 states have call successors, (667) [2025-03-08 05:27:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 5149 transitions. [2025-03-08 05:27:08,855 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 5149 transitions. Word has length 136 [2025-03-08 05:27:08,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:08,856 INFO L471 AbstractCegarLoop]: Abstraction has 3167 states and 5149 transitions. [2025-03-08 05:27:08,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:27:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 5149 transitions. [2025-03-08 05:27:08,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-08 05:27:08,860 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:08,860 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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 05:27:08,868 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 05:27:09,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:09,061 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:09,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1855068938, now seen corresponding path program 1 times [2025-03-08 05:27:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:09,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196118458] [2025-03-08 05:27:09,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:09,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:09,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 05:27:09,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 05:27:09,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:09,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:09,281 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 05:27:09,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196118458] [2025-03-08 05:27:09,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196118458] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932068013] [2025-03-08 05:27:09,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:09,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:09,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:09,284 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 05:27:09,286 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 05:27:09,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-08 05:27:09,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-08 05:27:09,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:09,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:09,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 05:27:09,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:27:09,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932068013] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:09,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-08 05:27:09,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883757870] [2025-03-08 05:27:09,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:09,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:27:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:09,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:27:09,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-03-08 05:27:09,635 INFO L87 Difference]: Start difference. First operand 3167 states and 5149 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:09,899 INFO L93 Difference]: Finished difference Result 3369 states and 5447 transitions. [2025-03-08 05:27:09,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:27:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2025-03-08 05:27:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:09,919 INFO L225 Difference]: With dead ends: 3369 [2025-03-08 05:27:09,919 INFO L226 Difference]: Without dead ends: 3354 [2025-03-08 05:27:09,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 147 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 05:27:09,922 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 842 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:09,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 3574 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 05:27:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2025-03-08 05:27:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3333. [2025-03-08 05:27:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3333 states, 2528 states have (on average 1.6131329113924051) internal successors, (4078), 2604 states have internal predecessors, (4078), 626 states have call successors, (626), 161 states have call predecessors, (626), 178 states have return successors, (693), 600 states have call predecessors, (693), 621 states have call successors, (693) [2025-03-08 05:27:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3333 states to 3333 states and 5397 transitions. [2025-03-08 05:27:10,023 INFO L78 Accepts]: Start accepts. Automaton has 3333 states and 5397 transitions. Word has length 142 [2025-03-08 05:27:10,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:10,024 INFO L471 AbstractCegarLoop]: Abstraction has 3333 states and 5397 transitions. [2025-03-08 05:27:10,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:27:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3333 states and 5397 transitions. [2025-03-08 05:27:10,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-08 05:27:10,028 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:10,028 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:27:10,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 05:27:10,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:10,229 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:10,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1756217245, now seen corresponding path program 1 times [2025-03-08 05:27:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:10,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270918555] [2025-03-08 05:27:10,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:10,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:10,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-08 05:27:10,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-08 05:27:10,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:10,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:27:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270918555] [2025-03-08 05:27:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270918555] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150618209] [2025-03-08 05:27:10,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:10,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:10,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:10,485 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 05:27:10,486 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 05:27:10,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-08 05:27:10,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-08 05:27:10,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:10,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:10,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-08 05:27:10,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:27:10,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150618209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:10,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:10,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:27:10,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423264298] [2025-03-08 05:27:10,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:10,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:27:10,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:10,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:27:10,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:27:10,808 INFO L87 Difference]: Start difference. First operand 3333 states and 5397 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-08 05:27:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:12,807 INFO L93 Difference]: Finished difference Result 10889 states and 17930 transitions. [2025-03-08 05:27:12,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 05:27:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 152 [2025-03-08 05:27:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:12,849 INFO L225 Difference]: With dead ends: 10889 [2025-03-08 05:27:12,849 INFO L226 Difference]: Without dead ends: 7607 [2025-03-08 05:27:12,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-08 05:27:12,867 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 2216 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 4156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:12,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 2168 Invalid, 4156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 3639 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-08 05:27:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2025-03-08 05:27:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 7128. [2025-03-08 05:27:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7128 states, 5395 states have (on average 1.6051899907321594) internal successors, (8660), 5568 states have internal predecessors, (8660), 1314 states have call successors, (1314), 335 states have call predecessors, (1314), 418 states have return successors, (1652), 1290 states have call predecessors, (1652), 1309 states have call successors, (1652) [2025-03-08 05:27:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7128 states to 7128 states and 11626 transitions. [2025-03-08 05:27:13,152 INFO L78 Accepts]: Start accepts. Automaton has 7128 states and 11626 transitions. Word has length 152 [2025-03-08 05:27:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:13,152 INFO L471 AbstractCegarLoop]: Abstraction has 7128 states and 11626 transitions. [2025-03-08 05:27:13,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-08 05:27:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 7128 states and 11626 transitions. [2025-03-08 05:27:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 05:27:13,158 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:13,158 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:27:13,168 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 05:27:13,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:13,359 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:13,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1531721060, now seen corresponding path program 1 times [2025-03-08 05:27:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:13,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379728663] [2025-03-08 05:27:13,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:13,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:13,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 05:27:13,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 05:27:13,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:13,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:27:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379728663] [2025-03-08 05:27:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379728663] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608831564] [2025-03-08 05:27:13,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:13,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:13,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:13,635 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 05:27:13,637 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 05:27:13,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 05:27:13,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 05:27:13,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:13,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:13,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:27:13,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-08 05:27:13,886 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:13,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608831564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:13,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:13,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-08 05:27:13,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520329657] [2025-03-08 05:27:13,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:13,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:27:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:13,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:27:13,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:27:13,888 INFO L87 Difference]: Start difference. First operand 7128 states and 11626 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:27:14,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:14,209 INFO L93 Difference]: Finished difference Result 17430 states and 28730 transitions. [2025-03-08 05:27:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:27:14,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2025-03-08 05:27:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:14,263 INFO L225 Difference]: With dead ends: 17430 [2025-03-08 05:27:14,263 INFO L226 Difference]: Without dead ends: 10356 [2025-03-08 05:27:14,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 165 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 05:27:14,289 INFO L435 NwaCegarLoop]: 1640 mSDtfsCounter, 855 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:14,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2545 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:27:14,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10356 states. [2025-03-08 05:27:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10356 to 7116. [2025-03-08 05:27:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7116 states, 5389 states have (on average 1.6047504175171645) internal successors, (8648), 5556 states have internal predecessors, (8648), 1314 states have call successors, (1314), 335 states have call predecessors, (1314), 412 states have return successors, (1616), 1290 states have call predecessors, (1616), 1309 states have call successors, (1616) [2025-03-08 05:27:14,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 11578 transitions. [2025-03-08 05:27:14,618 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 11578 transitions. Word has length 157 [2025-03-08 05:27:14,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:14,619 INFO L471 AbstractCegarLoop]: Abstraction has 7116 states and 11578 transitions. [2025-03-08 05:27:14,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-08 05:27:14,619 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 11578 transitions. [2025-03-08 05:27:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-08 05:27:14,624 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:14,624 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:27:14,633 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 05:27:14,824 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,SelfDestructingSolverStorable23 [2025-03-08 05:27:14,825 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:14,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:14,826 INFO L85 PathProgramCache]: Analyzing trace with hash 507027139, now seen corresponding path program 1 times [2025-03-08 05:27:14,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:14,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353933292] [2025-03-08 05:27:14,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:14,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:14,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 05:27:14,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 05:27:14,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:14,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:15,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:27:15,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353933292] [2025-03-08 05:27:15,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353933292] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:15,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619499314] [2025-03-08 05:27:15,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:15,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:15,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:15,042 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 05:27:15,044 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 05:27:15,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-08 05:27:15,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-08 05:27:15,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:15,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:15,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 05:27:15,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:27:15,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:15,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619499314] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:15,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:15,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:27:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127955957] [2025-03-08 05:27:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:15,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:27:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:15,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:27:15,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:27:15,435 INFO L87 Difference]: Start difference. First operand 7116 states and 11578 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:17,261 INFO L93 Difference]: Finished difference Result 19192 states and 31905 transitions. [2025-03-08 05:27:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:27:17,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 157 [2025-03-08 05:27:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:17,318 INFO L225 Difference]: With dead ends: 19192 [2025-03-08 05:27:17,318 INFO L226 Difference]: Without dead ends: 12121 [2025-03-08 05:27:17,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 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 05:27:17,341 INFO L435 NwaCegarLoop]: 406 mSDtfsCounter, 2010 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:17,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 937 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-08 05:27:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2025-03-08 05:27:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 11541. [2025-03-08 05:27:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11541 states, 8631 states have (on average 1.59448499594485) internal successors, (13762), 8948 states have internal predecessors, (13762), 2232 states have call successors, (2232), 524 states have call predecessors, (2232), 677 states have return successors, (3008), 2230 states have call predecessors, (3008), 2227 states have call successors, (3008) [2025-03-08 05:27:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11541 states to 11541 states and 19002 transitions. [2025-03-08 05:27:17,860 INFO L78 Accepts]: Start accepts. Automaton has 11541 states and 19002 transitions. Word has length 157 [2025-03-08 05:27:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:17,861 INFO L471 AbstractCegarLoop]: Abstraction has 11541 states and 19002 transitions. [2025-03-08 05:27:17,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11541 states and 19002 transitions. [2025-03-08 05:27:17,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-08 05:27:17,865 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:17,866 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:27:17,875 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 05:27:18,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-08 05:27:18,067 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:18,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1462244653, now seen corresponding path program 1 times [2025-03-08 05:27:18,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:18,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454608318] [2025-03-08 05:27:18,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:18,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:18,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 05:27:18,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 05:27:18,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:18,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:27:18,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454608318] [2025-03-08 05:27:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454608318] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747859355] [2025-03-08 05:27:18,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:18,303 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 05:27:18,305 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 05:27:18,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-08 05:27:18,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-08 05:27:18,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:18,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:18,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 05:27:18,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:27:18,613 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:18,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747859355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:18,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:18,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:27:18,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483544569] [2025-03-08 05:27:18,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:18,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:27:18,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:18,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:27:18,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:27:18,615 INFO L87 Difference]: Start difference. First operand 11541 states and 19002 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:20,798 INFO L93 Difference]: Finished difference Result 33909 states and 58099 transitions. [2025-03-08 05:27:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:27:20,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 158 [2025-03-08 05:27:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:20,959 INFO L225 Difference]: With dead ends: 33909 [2025-03-08 05:27:20,959 INFO L226 Difference]: Without dead ends: 22413 [2025-03-08 05:27:21,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 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 05:27:21,038 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 2013 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:21,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2096 Valid, 905 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 05:27:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22413 states. [2025-03-08 05:27:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22413 to 21374. [2025-03-08 05:27:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21374 states, 15700 states have (on average 1.5838216560509555) internal successors, (24866), 16389 states have internal predecessors, (24866), 4424 states have call successors, (4424), 902 states have call predecessors, (4424), 1249 states have return successors, (6866), 4490 states have call predecessors, (6866), 4419 states have call successors, (6866) [2025-03-08 05:27:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21374 states to 21374 states and 36156 transitions. [2025-03-08 05:27:22,186 INFO L78 Accepts]: Start accepts. Automaton has 21374 states and 36156 transitions. Word has length 158 [2025-03-08 05:27:22,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:22,187 INFO L471 AbstractCegarLoop]: Abstraction has 21374 states and 36156 transitions. [2025-03-08 05:27:22,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 21374 states and 36156 transitions. [2025-03-08 05:27:22,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-08 05:27:22,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:22,192 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:27:22,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 05:27:22,394 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,SelfDestructingSolverStorable25 [2025-03-08 05:27:22,394 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:22,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1914835453, now seen corresponding path program 1 times [2025-03-08 05:27:22,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731611718] [2025-03-08 05:27:22,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:22,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 05:27:22,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 05:27:22,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:22,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:27:22,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731611718] [2025-03-08 05:27:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731611718] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:22,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84992889] [2025-03-08 05:27:22,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:22,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:22,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:22,790 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 05:27:22,792 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 05:27:22,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-08 05:27:23,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-08 05:27:23,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:23,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:23,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 1775 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 05:27:23,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:27:23,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84992889] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:23,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:23,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:27:23,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674890626] [2025-03-08 05:27:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:23,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:27:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:23,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:27:23,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:27:23,172 INFO L87 Difference]: Start difference. First operand 21374 states and 36156 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:26,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:26,737 INFO L93 Difference]: Finished difference Result 66992 states and 121158 transitions. [2025-03-08 05:27:26,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:27:26,738 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), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2025-03-08 05:27:26,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:27,165 INFO L225 Difference]: With dead ends: 66992 [2025-03-08 05:27:27,165 INFO L226 Difference]: Without dead ends: 45663 [2025-03-08 05:27:27,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 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 05:27:27,281 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 2000 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:27,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2082 Valid, 901 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-08 05:27:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45663 states. [2025-03-08 05:27:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45663 to 43671. [2025-03-08 05:27:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43671 states, 31397 states have (on average 1.5728254291811319) internal successors, (49382), 33016 states have internal predecessors, (49382), 9772 states have call successors, (9772), 1658 states have call predecessors, (9772), 2501 states have return successors, (18108), 10046 states have call predecessors, (18108), 9767 states have call successors, (18108) [2025-03-08 05:27:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43671 states to 43671 states and 77262 transitions. [2025-03-08 05:27:30,338 INFO L78 Accepts]: Start accepts. Automaton has 43671 states and 77262 transitions. Word has length 159 [2025-03-08 05:27:30,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:30,339 INFO L471 AbstractCegarLoop]: Abstraction has 43671 states and 77262 transitions. [2025-03-08 05:27:30,339 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), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 43671 states and 77262 transitions. [2025-03-08 05:27:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-08 05:27:30,345 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:30,345 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:27:30,354 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 05:27:30,545 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,SelfDestructingSolverStorable26 [2025-03-08 05:27:30,546 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:30,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash -769867443, now seen corresponding path program 1 times [2025-03-08 05:27:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671961505] [2025-03-08 05:27:30,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:30,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-08 05:27:30,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-08 05:27:30,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:30,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:27:30,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:30,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671961505] [2025-03-08 05:27:30,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671961505] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:30,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919109758] [2025-03-08 05:27:30,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:30,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:30,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:30,765 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 05:27:30,940 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 05:27:31,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-08 05:27:31,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-08 05:27:31,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:31,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:31,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 05:27:31,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:27:31,264 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:31,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919109758] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:31,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:31,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:27:31,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065792805] [2025-03-08 05:27:31,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:31,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:27:31,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:31,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:27:31,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:27:31,266 INFO L87 Difference]: Start difference. First operand 43671 states and 77262 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:27:38,494 INFO L93 Difference]: Finished difference Result 142951 states and 281551 transitions. [2025-03-08 05:27:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:27:38,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 160 [2025-03-08 05:27:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:27:39,243 INFO L225 Difference]: With dead ends: 142951 [2025-03-08 05:27:39,243 INFO L226 Difference]: Without dead ends: 99325 [2025-03-08 05:27:39,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 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 05:27:39,513 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 1987 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:27:39,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 897 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 05:27:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99325 states. [2025-03-08 05:27:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99325 to 95560. [2025-03-08 05:27:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95560 states, 67138 states have (on average 1.561470404242009) internal successors, (104834), 71103 states have internal predecessors, (104834), 23128 states have call successors, (23128), 3170 states have call predecessors, (23128), 5293 states have return successors, (52714), 24034 states have call predecessors, (52714), 23123 states have call successors, (52714) [2025-03-08 05:27:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95560 states to 95560 states and 180676 transitions. [2025-03-08 05:27:47,482 INFO L78 Accepts]: Start accepts. Automaton has 95560 states and 180676 transitions. Word has length 160 [2025-03-08 05:27:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:27:47,483 INFO L471 AbstractCegarLoop]: Abstraction has 95560 states and 180676 transitions. [2025-03-08 05:27:47,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:27:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 95560 states and 180676 transitions. [2025-03-08 05:27:47,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-08 05:27:47,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:27:47,488 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:27:47,495 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 05:27:47,688 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,SelfDestructingSolverStorable27 [2025-03-08 05:27:47,689 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:27:47,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:27:47,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1903684919, now seen corresponding path program 1 times [2025-03-08 05:27:47,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:27:47,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756756869] [2025-03-08 05:27:47,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:47,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:27:47,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-08 05:27:47,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-08 05:27:47,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:47,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:27:47,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:27:47,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756756869] [2025-03-08 05:27:47,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756756869] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:27:47,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031984816] [2025-03-08 05:27:47,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:27:47,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:27:47,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:27:47,888 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 05:27:47,890 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 05:27:48,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-08 05:27:48,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-08 05:27:48,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:27:48,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:27:48,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-08 05:27:48,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:27:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-08 05:27:48,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:27:48,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031984816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:27:48,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:27:48,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:27:48,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346736934] [2025-03-08 05:27:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:27:48,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:27:48,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:27:48,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:27:48,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:27:48,210 INFO L87 Difference]: Start difference. First operand 95560 states and 180676 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18)