./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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_spec1_product11.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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:13:09,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:13:09,601 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:13:09,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:13:09,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:13:09,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:13:09,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:13:09,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:13:09,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:13:09,632 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:13:09,633 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:13:09,633 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:13:09,633 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:13:09,633 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:13:09,634 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:13:09,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:13:09,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:13:09,634 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:13:09,634 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:13:09,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:13:09,635 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:13:09,635 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:13:09,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:13:09,636 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:13:09,636 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:13:09,636 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:13:09,636 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:13:09,636 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:13:09,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:13:09,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:13:09,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:13:09,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:13:09,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:13:09,637 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 -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2025-03-03 14:13:09,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:13:09,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:13:09,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:13:09,892 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:13:09,892 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:13:09,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2025-03-03 14:13:11,094 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c34d0956/e7c1b570e71d4154a33f735e374affbe/FLAG3f33c5f6c [2025-03-03 14:13:11,395 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:13:11,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2025-03-03 14:13:11,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c34d0956/e7c1b570e71d4154a33f735e374affbe/FLAG3f33c5f6c [2025-03-03 14:13:11,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c34d0956/e7c1b570e71d4154a33f735e374affbe [2025-03-03 14:13:11,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:13:11,437 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:13:11,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:13:11,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:13:11,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:13:11,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:11,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bdde71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11, skipping insertion in model container [2025-03-03 14:13:11,442 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:11,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:13:11,763 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_spec1_product11.cil.c[40826,40839] [2025-03-03 14:13:11,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:13:11,853 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:13:11,863 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [185] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [370] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1901] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1939] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1948] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2407] [2025-03-03 14:13:11,865 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2757] [2025-03-03 14:13:11,923 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_spec1_product11.cil.c[40826,40839] [2025-03-03 14:13:11,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:13:11,989 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:13:11,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11 WrapperNode [2025-03-03 14:13:11,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:13:11,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:13:11,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:13:11,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:13:11,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,062 INFO L138 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1114 [2025-03-03 14:13:12,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:13:12,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:13:12,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:13:12,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:13:12,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,106 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:13:12,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,128 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,135 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,137 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:13:12,146 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:13:12,146 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:13:12,146 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:13:12,147 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (1/1) ... [2025-03-03 14:13:12,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:13:12,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:12,169 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) [2025-03-03 14:13:12,171 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 [2025-03-03 14:13:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-03 14:13:12,186 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-03 14:13:12,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:13:12,187 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:13:12,187 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:13:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:13:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:13:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:13:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:13:12,188 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:13:12,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:13:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:13:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:13:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:13:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:13:12,189 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:13:12,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:13:12,339 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:13:12,342 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:13:12,398 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~2; [2025-03-03 14:13:12,403 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L456: #res := ~retValue_acc~3; [2025-03-03 14:13:12,409 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L605: #res := ~retValue_acc~4; [2025-03-03 14:13:12,473 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1261: #res#1 := ~retValue_acc~14#1; [2025-03-03 14:13:12,474 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L648-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~6#1; [2025-03-03 14:13:12,477 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1889: #res := ~retValue_acc~18; [2025-03-03 14:13:12,730 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1142-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~11#1; [2025-03-03 14:13:12,730 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1171: #res#1 := ~retValue_acc~12#1; [2025-03-03 14:13:12,776 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1306: #res := ~retValue_acc~16; [2025-03-03 14:13:12,785 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L127: #res := ~retValue_acc~1; [2025-03-03 14:13:12,832 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L697-1: isEmpty_#res#1 := isEmpty_~retValue_acc~8#1; [2025-03-03 14:13:12,950 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1292-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~15#1; [2025-03-03 14:13:13,008 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L777-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~9#1; [2025-03-03 14:13:13,008 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L790-1: isIdle_#res#1 := isIdle_~retValue_acc~10#1; [2025-03-03 14:13:13,068 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3108: #res := ~retValue_acc~28; [2025-03-03 14:13:13,137 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754-1: main_#res#1 := main_~retValue_acc~26#1; [2025-03-03 14:13:13,137 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1936-1: valid_product_#res#1 := valid_product_~retValue_acc~21#1; [2025-03-03 14:13:13,145 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2868: #res := ~retValue_acc~27; [2025-03-03 14:13:13,146 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L614: #res := ~retValue_acc~5; [2025-03-03 14:13:13,150 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3419: #res := ~retValue_acc~29; [2025-03-03 14:13:13,311 INFO L? ?]: Removed 443 outVars from TransFormulas that were not future-live. [2025-03-03 14:13:13,312 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:13:13,335 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:13:13,335 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:13:13,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:13:13 BoogieIcfgContainer [2025-03-03 14:13:13,335 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:13:13,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:13:13,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:13:13,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:13:13,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:13:11" (1/3) ... [2025-03-03 14:13:13,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352bf981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:13:13, skipping insertion in model container [2025-03-03 14:13:13,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:11" (2/3) ... [2025-03-03 14:13:13,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@352bf981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:13:13, skipping insertion in model container [2025-03-03 14:13:13,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:13:13" (3/3) ... [2025-03-03 14:13:13,343 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2025-03-03 14:13:13,354 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:13:13,357 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product11.cil.c that has 25 procedures, 560 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:13:13,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:13:13,426 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;@7ec8ce10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:13:13,427 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:13:13,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 437 states have (on average 1.6910755148741419) internal successors, (739), 458 states have internal predecessors, (739), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:13:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 14:13:13,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:13,460 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:13,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:13,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 289855967, now seen corresponding path program 1 times [2025-03-03 14:13:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:13,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597091322] [2025-03-03 14:13:13,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:13,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:13:13,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:13:13,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:13,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:13,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:13,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597091322] [2025-03-03 14:13:13,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597091322] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:13,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441327722] [2025-03-03 14:13:13,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:13,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:13,969 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) [2025-03-03 14:13:13,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:13:14,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:13:14,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:13:14,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:14,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:14,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 14:13:14,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:14,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441327722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:14,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:14,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-03 14:13:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198659099] [2025-03-03 14:13:14,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:14,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:13:14,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:14,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:13:14,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:13:14,398 INFO L87 Difference]: Start difference. First operand has 560 states, 437 states have (on average 1.6910755148741419) internal successors, (739), 458 states have internal predecessors, (739), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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) [2025-03-03 14:13:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:14,445 INFO L93 Difference]: Finished difference Result 581 states and 963 transitions. [2025-03-03 14:13:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:13:14,447 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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 125 [2025-03-03 14:13:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:14,463 INFO L225 Difference]: With dead ends: 581 [2025-03-03 14:13:14,464 INFO L226 Difference]: Without dead ends: 552 [2025-03-03 14:13:14,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:13:14,468 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:14,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:14,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-03 14:13:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-03 14:13:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.691415313225058) internal successors, (729), 450 states have internal predecessors, (729), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 918 transitions. [2025-03-03 14:13:14,536 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 918 transitions. Word has length 125 [2025-03-03 14:13:14,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:14,538 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 918 transitions. [2025-03-03 14:13:14,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 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) [2025-03-03 14:13:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 918 transitions. [2025-03-03 14:13:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 14:13:14,543 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:14,543 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:14,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:14,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 14:13:14,744 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:14,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:14,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1886432612, now seen corresponding path program 1 times [2025-03-03 14:13:14,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:14,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859536000] [2025-03-03 14:13:14,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:14,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:14,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:13:14,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:13:14,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:14,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:14,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859536000] [2025-03-03 14:13:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859536000] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:14,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338620907] [2025-03-03 14:13:14,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:14,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:14,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:14,948 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) [2025-03-03 14:13:14,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:13:15,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:13:15,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:13:15,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:15,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:15,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:15,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:15,352 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338620907] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:15,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:15,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503618962] [2025-03-03 14:13:15,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:15,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:15,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:15,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:15,355 INFO L87 Difference]: Start difference. First operand 552 states and 918 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:15,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:15,432 INFO L93 Difference]: Finished difference Result 1095 states and 1828 transitions. [2025-03-03 14:13:15,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:13:15,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2025-03-03 14:13:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:15,442 INFO L225 Difference]: With dead ends: 1095 [2025-03-03 14:13:15,443 INFO L226 Difference]: Without dead ends: 552 [2025-03-03 14:13:15,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:15,448 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 5 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:15,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2712 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-03 14:13:15,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-03 14:13:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.6890951276102089) internal successors, (728), 450 states have internal predecessors, (728), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:15,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 917 transitions. [2025-03-03 14:13:15,482 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 917 transitions. Word has length 127 [2025-03-03 14:13:15,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:15,482 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 917 transitions. [2025-03-03 14:13:15,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:15,483 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 917 transitions. [2025-03-03 14:13:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-03 14:13:15,487 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:15,487 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:15,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 14:13:15,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-03 14:13:15,692 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:15,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1702839838, now seen corresponding path program 1 times [2025-03-03 14:13:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161604802] [2025-03-03 14:13:15,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:15,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-03 14:13:15,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-03 14:13:15,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:15,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:15,845 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:15,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:15,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161604802] [2025-03-03 14:13:15,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161604802] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:15,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492829287] [2025-03-03 14:13:15,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:15,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:15,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:15,848 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) [2025-03-03 14:13:15,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:13:15,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-03 14:13:16,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-03 14:13:16,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:16,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:16,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:16,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:16,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492829287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:16,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862756167] [2025-03-03 14:13:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:16,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:16,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:16,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:16,177 INFO L87 Difference]: Start difference. First operand 552 states and 917 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:16,236 INFO L93 Difference]: Finished difference Result 1095 states and 1826 transitions. [2025-03-03 14:13:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:13:16,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2025-03-03 14:13:16,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:16,243 INFO L225 Difference]: With dead ends: 1095 [2025-03-03 14:13:16,244 INFO L226 Difference]: Without dead ends: 552 [2025-03-03 14:13:16,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:16,247 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 4 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2712 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:16,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2712 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-03 14:13:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-03 14:13:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 431 states have (on average 1.6867749419953597) internal successors, (727), 450 states have internal predecessors, (727), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 916 transitions. [2025-03-03 14:13:16,273 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 916 transitions. Word has length 129 [2025-03-03 14:13:16,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:16,275 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 916 transitions. [2025-03-03 14:13:16,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 916 transitions. [2025-03-03 14:13:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 14:13:16,279 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:16,279 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:16,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 14:13:16,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:16,480 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:16,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:16,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1532379708, now seen corresponding path program 1 times [2025-03-03 14:13:16,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:16,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746837266] [2025-03-03 14:13:16,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:16,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:16,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:13:16,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:13:16,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:16,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746837266] [2025-03-03 14:13:16,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746837266] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934218352] [2025-03-03 14:13:16,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:16,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:16,614 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) [2025-03-03 14:13:16,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:13:16,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:13:16,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:13:16,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:16,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:16,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:16,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:16,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:16,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934218352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:16,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:16,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:16,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161322757] [2025-03-03 14:13:16,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:16,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:16,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:16,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:16,894 INFO L87 Difference]: Start difference. First operand 552 states and 916 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:16,956 INFO L93 Difference]: Finished difference Result 1102 states and 1833 transitions. [2025-03-03 14:13:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:16,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2025-03-03 14:13:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:16,961 INFO L225 Difference]: With dead ends: 1102 [2025-03-03 14:13:16,961 INFO L226 Difference]: Without dead ends: 561 [2025-03-03 14:13:16,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:16,964 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 13 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:16,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2709 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-03 14:13:16,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-03-03 14:13:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.683371298405467) internal successors, (739), 458 states have internal predecessors, (739), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2025-03-03 14:13:16,987 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 131 [2025-03-03 14:13:16,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:16,988 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2025-03-03 14:13:16,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:16,988 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2025-03-03 14:13:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-03 14:13:16,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:16,992 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:17,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:17,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:17,192 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:17,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:17,193 INFO L85 PathProgramCache]: Analyzing trace with hash -874020516, now seen corresponding path program 1 times [2025-03-03 14:13:17,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:17,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653084805] [2025-03-03 14:13:17,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:17,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:17,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-03 14:13:17,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-03 14:13:17,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:17,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:17,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653084805] [2025-03-03 14:13:17,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653084805] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:17,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489373104] [2025-03-03 14:13:17,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:17,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:17,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:17,329 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) [2025-03-03 14:13:17,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 14:13:17,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-03 14:13:17,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-03 14:13:17,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:17,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:17,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:17,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:17,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489373104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:17,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:17,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:17,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525566205] [2025-03-03 14:13:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:17,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:17,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:17,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:17,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:17,627 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:17,696 INFO L93 Difference]: Finished difference Result 1104 states and 1834 transitions. [2025-03-03 14:13:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2025-03-03 14:13:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:17,700 INFO L225 Difference]: With dead ends: 1104 [2025-03-03 14:13:17,700 INFO L226 Difference]: Without dead ends: 561 [2025-03-03 14:13:17,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:17,704 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 11 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:17,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2709 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:17,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-03 14:13:17,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-03-03 14:13:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.6810933940774488) internal successors, (738), 458 states have internal predecessors, (738), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2025-03-03 14:13:17,724 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 132 [2025-03-03 14:13:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:17,725 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2025-03-03 14:13:17,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:17,725 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2025-03-03 14:13:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:13:17,727 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:17,728 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:17,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 14:13:17,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:17,929 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:17,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:17,929 INFO L85 PathProgramCache]: Analyzing trace with hash 670974591, now seen corresponding path program 1 times [2025-03-03 14:13:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335748825] [2025-03-03 14:13:17,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:17,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:13:17,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:13:17,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:17,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:18,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:18,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335748825] [2025-03-03 14:13:18,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335748825] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:18,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251250831] [2025-03-03 14:13:18,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:18,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:18,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:18,054 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) [2025-03-03 14:13:18,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 14:13:18,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:13:18,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:13:18,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:18,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:18,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:18,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:18,342 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:18,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251250831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:18,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:18,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:18,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438636113] [2025-03-03 14:13:18,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:18,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:18,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:18,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:18,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:18,344 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:18,411 INFO L93 Difference]: Finished difference Result 1104 states and 1833 transitions. [2025-03-03 14:13:18,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:18,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2025-03-03 14:13:18,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:18,415 INFO L225 Difference]: With dead ends: 1104 [2025-03-03 14:13:18,415 INFO L226 Difference]: Without dead ends: 561 [2025-03-03 14:13:18,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:18,418 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 10 mSDsluCounter, 1804 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:18,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2709 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-03 14:13:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-03-03 14:13:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.6788154897494305) internal successors, (737), 458 states have internal predecessors, (737), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 926 transitions. [2025-03-03 14:13:18,434 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 926 transitions. Word has length 133 [2025-03-03 14:13:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:18,434 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 926 transitions. [2025-03-03 14:13:18,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:18,435 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 926 transitions. [2025-03-03 14:13:18,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-03 14:13:18,437 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:18,437 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:18,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:18,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:18,641 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:18,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1441655680, now seen corresponding path program 1 times [2025-03-03 14:13:18,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:18,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385925506] [2025-03-03 14:13:18,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:18,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:18,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-03 14:13:18,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 14:13:18,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:18,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:18,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385925506] [2025-03-03 14:13:18,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385925506] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:18,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549786235] [2025-03-03 14:13:18,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:18,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:18,731 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) [2025-03-03 14:13:18,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 14:13:18,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-03 14:13:18,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 14:13:18,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:18,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:18,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:18,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:13:19,016 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:19,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549786235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:19,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:19,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163116209] [2025-03-03 14:13:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:19,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:19,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:19,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:19,017 INFO L87 Difference]: Start difference. First operand 561 states and 926 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:19,150 INFO L93 Difference]: Finished difference Result 1130 states and 1880 transitions. [2025-03-03 14:13:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:13:19,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2025-03-03 14:13:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:19,154 INFO L225 Difference]: With dead ends: 1130 [2025-03-03 14:13:19,154 INFO L226 Difference]: Without dead ends: 576 [2025-03-03 14:13:19,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:19,156 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 76 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:19,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2600 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:19,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-03 14:13:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 561. [2025-03-03 14:13:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.6674259681093395) internal successors, (732), 458 states have internal predecessors, (732), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 921 transitions. [2025-03-03 14:13:19,171 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 921 transitions. Word has length 134 [2025-03-03 14:13:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:19,171 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 921 transitions. [2025-03-03 14:13:19,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 921 transitions. [2025-03-03 14:13:19,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:13:19,174 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:19,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:19,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 14:13:19,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:19,376 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:19,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2053276868, now seen corresponding path program 1 times [2025-03-03 14:13:19,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:19,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075523185] [2025-03-03 14:13:19,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:19,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:19,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:13:19,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:13:19,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:19,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:19,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075523185] [2025-03-03 14:13:19,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075523185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040168390] [2025-03-03 14:13:19,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:19,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:19,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:19,458 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) [2025-03-03 14:13:19,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 14:13:19,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:13:19,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:13:19,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:19,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:19,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:19,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:13:19,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:19,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040168390] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:19,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:19,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:19,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251261490] [2025-03-03 14:13:19,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:19,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:19,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:19,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:19,756 INFO L87 Difference]: Start difference. First operand 561 states and 921 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:19,874 INFO L93 Difference]: Finished difference Result 1130 states and 1870 transitions. [2025-03-03 14:13:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:13:19,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2025-03-03 14:13:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:19,878 INFO L225 Difference]: With dead ends: 1130 [2025-03-03 14:13:19,878 INFO L226 Difference]: Without dead ends: 576 [2025-03-03 14:13:19,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:19,880 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 75 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:19,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2600 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-03 14:13:19,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 561. [2025-03-03 14:13:19,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.6560364464692483) internal successors, (727), 458 states have internal predecessors, (727), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 916 transitions. [2025-03-03 14:13:19,894 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 916 transitions. Word has length 136 [2025-03-03 14:13:19,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:19,894 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 916 transitions. [2025-03-03 14:13:19,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 916 transitions. [2025-03-03 14:13:19,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-03 14:13:19,897 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:19,897 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:19,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:20,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-03 14:13:20,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:20,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 477944352, now seen corresponding path program 1 times [2025-03-03 14:13:20,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:20,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58277120] [2025-03-03 14:13:20,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:20,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:20,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-03 14:13:20,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-03 14:13:20,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:20,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:13:20,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58277120] [2025-03-03 14:13:20,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58277120] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:20,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152388485] [2025-03-03 14:13:20,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:20,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:20,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:20,169 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) [2025-03-03 14:13:20,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 14:13:20,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-03 14:13:20,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-03 14:13:20,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:20,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:20,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:20,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:13:20,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:20,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152388485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:20,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:20,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:20,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336732233] [2025-03-03 14:13:20,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:20,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:20,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:20,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:20,467 INFO L87 Difference]: Start difference. First operand 561 states and 916 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:20,650 INFO L93 Difference]: Finished difference Result 1181 states and 1943 transitions. [2025-03-03 14:13:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:20,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2025-03-03 14:13:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:20,654 INFO L225 Difference]: With dead ends: 1181 [2025-03-03 14:13:20,654 INFO L226 Difference]: Without dead ends: 642 [2025-03-03 14:13:20,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:20,657 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 130 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2631 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:20,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2631 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2025-03-03 14:13:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 612. [2025-03-03 14:13:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 489 states have (on average 1.6605316973415134) internal successors, (812), 508 states have internal predecessors, (812), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1001 transitions. [2025-03-03 14:13:20,673 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1001 transitions. Word has length 138 [2025-03-03 14:13:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:20,673 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 1001 transitions. [2025-03-03 14:13:20,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1001 transitions. [2025-03-03 14:13:20,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:13:20,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:20,676 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:20,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-03 14:13:20,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:20,880 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:20,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1234379321, now seen corresponding path program 1 times [2025-03-03 14:13:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:20,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968199810] [2025-03-03 14:13:20,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:20,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:13:20,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:13:20,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:20,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:13:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968199810] [2025-03-03 14:13:20,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968199810] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313911796] [2025-03-03 14:13:20,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:20,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:20,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:20,973 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) [2025-03-03 14:13:20,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 14:13:21,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:13:21,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:13:21,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:21,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:21,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:21,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:13:21,270 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313911796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:21,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:21,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:21,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149403484] [2025-03-03 14:13:21,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:21,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:21,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:21,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:21,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:21,272 INFO L87 Difference]: Start difference. First operand 612 states and 1001 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:21,410 INFO L93 Difference]: Finished difference Result 1196 states and 1967 transitions. [2025-03-03 14:13:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:21,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2025-03-03 14:13:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:21,414 INFO L225 Difference]: With dead ends: 1196 [2025-03-03 14:13:21,415 INFO L226 Difference]: Without dead ends: 642 [2025-03-03 14:13:21,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:21,417 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 124 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:21,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2604 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:21,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2025-03-03 14:13:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 612. [2025-03-03 14:13:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 489 states have (on average 1.6503067484662577) internal successors, (807), 508 states have internal predecessors, (807), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2025-03-03 14:13:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 996 transitions. [2025-03-03 14:13:21,441 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 996 transitions. Word has length 139 [2025-03-03 14:13:21,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:21,441 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 996 transitions. [2025-03-03 14:13:21,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:21,442 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 996 transitions. [2025-03-03 14:13:21,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:13:21,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:21,445 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:21,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:21,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 14:13:21,646 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:21,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 459797443, now seen corresponding path program 1 times [2025-03-03 14:13:21,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:21,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117214750] [2025-03-03 14:13:21,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:21,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:21,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:13:21,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:13:21,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:21,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:21,730 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:21,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:21,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117214750] [2025-03-03 14:13:21,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117214750] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:21,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245296262] [2025-03-03 14:13:21,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:21,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:21,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:21,732 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) [2025-03-03 14:13:21,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 14:13:21,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:13:21,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:13:21,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:21,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:21,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:13:22,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:13:22,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245296262] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:22,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:22,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:13:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636606786] [2025-03-03 14:13:22,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:22,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:13:22,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:22,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:13:22,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:13:22,054 INFO L87 Difference]: Start difference. First operand 612 states and 996 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:13:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:22,138 INFO L93 Difference]: Finished difference Result 1120 states and 1839 transitions. [2025-03-03 14:13:22,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:13:22,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2025-03-03 14:13:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:22,143 INFO L225 Difference]: With dead ends: 1120 [2025-03-03 14:13:22,143 INFO L226 Difference]: Without dead ends: 648 [2025-03-03 14:13:22,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:13:22,146 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 86 mSDsluCounter, 4416 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5315 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:22,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5315 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-03-03 14:13:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 631. [2025-03-03 14:13:22,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 505 states have (on average 1.6495049504950494) internal successors, (833), 526 states have internal predecessors, (833), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2025-03-03 14:13:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1026 transitions. [2025-03-03 14:13:22,165 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1026 transitions. Word has length 139 [2025-03-03 14:13:22,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:22,166 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 1026 transitions. [2025-03-03 14:13:22,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:13:22,166 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1026 transitions. [2025-03-03 14:13:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:13:22,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:22,169 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:22,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:22,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 14:13:22,370 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:22,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash 608097591, now seen corresponding path program 1 times [2025-03-03 14:13:22,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:22,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676452963] [2025-03-03 14:13:22,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:22,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:13:22,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:13:22,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:22,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:22,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:22,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676452963] [2025-03-03 14:13:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676452963] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:22,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293032169] [2025-03-03 14:13:22,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:22,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:22,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:22,442 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) [2025-03-03 14:13:22,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-03 14:13:22,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:13:22,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:13:22,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:22,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:22,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:22,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:13:22,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:22,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293032169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:22,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:22,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:22,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686807089] [2025-03-03 14:13:22,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:22,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:22,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:22,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:22,738 INFO L87 Difference]: Start difference. First operand 631 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:22,780 INFO L93 Difference]: Finished difference Result 1175 states and 1927 transitions. [2025-03-03 14:13:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:22,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2025-03-03 14:13:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:22,784 INFO L225 Difference]: With dead ends: 1175 [2025-03-03 14:13:22,784 INFO L226 Difference]: Without dead ends: 631 [2025-03-03 14:13:22,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:22,786 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 13 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:22,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2678 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2025-03-03 14:13:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2025-03-03 14:13:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 505 states have (on average 1.6415841584158415) internal successors, (829), 526 states have internal predecessors, (829), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2025-03-03 14:13:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1022 transitions. [2025-03-03 14:13:22,803 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1022 transitions. Word has length 140 [2025-03-03 14:13:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:22,803 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 1022 transitions. [2025-03-03 14:13:22,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1022 transitions. [2025-03-03 14:13:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:13:22,806 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:22,806 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:22,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-03 14:13:23,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 14:13:23,007 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:23,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:23,007 INFO L85 PathProgramCache]: Analyzing trace with hash -576669285, now seen corresponding path program 1 times [2025-03-03 14:13:23,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:23,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403758064] [2025-03-03 14:13:23,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:23,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:23,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:13:23,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:13:23,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:23,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403758064] [2025-03-03 14:13:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403758064] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712169567] [2025-03-03 14:13:23,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:23,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:23,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:23,078 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) [2025-03-03 14:13:23,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-03 14:13:23,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:13:23,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:13:23,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:23,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:23,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:13:23,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:13:23,439 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:23,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712169567] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:23,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:23,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:13:23,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665056477] [2025-03-03 14:13:23,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:23,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:13:23,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:23,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:13:23,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:13:23,441 INFO L87 Difference]: Start difference. First operand 631 states and 1022 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:13:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:23,507 INFO L93 Difference]: Finished difference Result 1135 states and 1860 transitions. [2025-03-03 14:13:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:13:23,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2025-03-03 14:13:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:23,510 INFO L225 Difference]: With dead ends: 1135 [2025-03-03 14:13:23,510 INFO L226 Difference]: Without dead ends: 663 [2025-03-03 14:13:23,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:13:23,512 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 95 mSDsluCounter, 4383 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:23,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5276 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:23,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2025-03-03 14:13:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 631. [2025-03-03 14:13:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 505 states have (on average 1.6415841584158415) internal successors, (829), 526 states have internal predecessors, (829), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2025-03-03 14:13:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1022 transitions. [2025-03-03 14:13:23,528 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1022 transitions. Word has length 140 [2025-03-03 14:13:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:23,528 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 1022 transitions. [2025-03-03 14:13:23,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:13:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1022 transitions. [2025-03-03 14:13:23,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:13:23,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:23,530 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:23,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-03 14:13:23,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 14:13:23,735 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:23,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1547352970, now seen corresponding path program 1 times [2025-03-03 14:13:23,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:23,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212816709] [2025-03-03 14:13:23,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:23,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:23,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:13:23,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:13:23,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:23,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:23,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212816709] [2025-03-03 14:13:23,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212816709] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:23,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688175655] [2025-03-03 14:13:23,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:23,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:23,796 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:23,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-03 14:13:23,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:13:24,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:13:24,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:24,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:24,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:13:24,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:13:24,104 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:24,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688175655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:24,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:24,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:13:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642388899] [2025-03-03 14:13:24,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:24,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:13:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:24,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:13:24,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:13:24,106 INFO L87 Difference]: Start difference. First operand 631 states and 1022 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:13:24,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:24,229 INFO L93 Difference]: Finished difference Result 1138 states and 1863 transitions. [2025-03-03 14:13:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:13:24,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2025-03-03 14:13:24,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:24,233 INFO L225 Difference]: With dead ends: 1138 [2025-03-03 14:13:24,233 INFO L226 Difference]: Without dead ends: 666 [2025-03-03 14:13:24,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:13:24,235 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 113 mSDsluCounter, 5205 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6087 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:24,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6087 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2025-03-03 14:13:24,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 631. [2025-03-03 14:13:24,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 505 states have (on average 1.6415841584158415) internal successors, (829), 526 states have internal predecessors, (829), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2025-03-03 14:13:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1022 transitions. [2025-03-03 14:13:24,250 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1022 transitions. Word has length 140 [2025-03-03 14:13:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:24,250 INFO L471 AbstractCegarLoop]: Abstraction has 631 states and 1022 transitions. [2025-03-03 14:13:24,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:13:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1022 transitions. [2025-03-03 14:13:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-03 14:13:24,253 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:24,253 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:24,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:24,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:24,453 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:24,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:24,454 INFO L85 PathProgramCache]: Analyzing trace with hash 623347500, now seen corresponding path program 1 times [2025-03-03 14:13:24,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:24,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308068278] [2025-03-03 14:13:24,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:24,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:24,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-03 14:13:24,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-03 14:13:24,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:24,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:24,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:24,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308068278] [2025-03-03 14:13:24,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308068278] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:24,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220906690] [2025-03-03 14:13:24,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:24,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:24,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:24,527 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:24,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-03 14:13:24,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-03 14:13:24,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-03 14:13:24,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:24,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:24,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:13:24,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:13:24,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220906690] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:24,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:24,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:24,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900687226] [2025-03-03 14:13:24,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:24,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:24,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:24,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:24,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:24,813 INFO L87 Difference]: Start difference. First operand 631 states and 1022 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:24,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:24,852 INFO L93 Difference]: Finished difference Result 1210 states and 1980 transitions. [2025-03-03 14:13:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:13:24,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2025-03-03 14:13:24,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:24,855 INFO L225 Difference]: With dead ends: 1210 [2025-03-03 14:13:24,856 INFO L226 Difference]: Without dead ends: 649 [2025-03-03 14:13:24,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:24,858 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 7 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:24,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2651 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2025-03-03 14:13:24,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2025-03-03 14:13:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 523 states have (on average 1.6252390057361377) internal successors, (850), 544 states have internal predecessors, (850), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2025-03-03 14:13:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1043 transitions. [2025-03-03 14:13:24,873 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1043 transitions. Word has length 141 [2025-03-03 14:13:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:24,873 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1043 transitions. [2025-03-03 14:13:24,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1043 transitions. [2025-03-03 14:13:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-03 14:13:24,876 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:24,876 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:24,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:25,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 14:13:25,080 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:25,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash -387343853, now seen corresponding path program 1 times [2025-03-03 14:13:25,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:25,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068851023] [2025-03-03 14:13:25,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:25,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:25,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:13:25,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:13:25,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:25,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:25,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:25,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068851023] [2025-03-03 14:13:25,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068851023] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:25,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736738439] [2025-03-03 14:13:25,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:25,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:25,175 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:25,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-03 14:13:25,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:13:25,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:13:25,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:25,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:25,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:13:25,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:25,537 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736738439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:25,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:25,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:13:25,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84443006] [2025-03-03 14:13:25,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:25,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:25,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:25,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:25,539 INFO L87 Difference]: Start difference. First operand 649 states and 1043 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:13:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:25,890 INFO L93 Difference]: Finished difference Result 1124 states and 1854 transitions. [2025-03-03 14:13:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:13:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 142 [2025-03-03 14:13:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:25,894 INFO L225 Difference]: With dead ends: 1124 [2025-03-03 14:13:25,894 INFO L226 Difference]: Without dead ends: 657 [2025-03-03 14:13:25,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:25,897 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 856 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:25,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2286 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:13:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2025-03-03 14:13:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2025-03-03 14:13:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 530 states have (on average 1.6264150943396227) internal successors, (862), 551 states have internal predecessors, (862), 98 states have call successors, (98), 27 states have call predecessors, (98), 28 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2025-03-03 14:13:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1056 transitions. [2025-03-03 14:13:25,914 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1056 transitions. Word has length 142 [2025-03-03 14:13:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:25,914 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1056 transitions. [2025-03-03 14:13:25,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:13:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1056 transitions. [2025-03-03 14:13:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-03 14:13:25,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:25,917 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:25,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:26,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-03 14:13:26,118 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:26,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1710361735, now seen corresponding path program 1 times [2025-03-03 14:13:26,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:26,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307120054] [2025-03-03 14:13:26,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:26,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:26,130 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-03 14:13:26,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-03 14:13:26,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:26,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:26,193 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:26,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307120054] [2025-03-03 14:13:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307120054] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092376211] [2025-03-03 14:13:26,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:26,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:26,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:26,196 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:26,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-03 14:13:26,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-03 14:13:26,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-03 14:13:26,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:26,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:26,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:13:26,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:26,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092376211] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:26,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:26,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:13:26,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112463397] [2025-03-03 14:13:26,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:26,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:26,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:26,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:26,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:26,524 INFO L87 Difference]: Start difference. First operand 657 states and 1056 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (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) [2025-03-03 14:13:26,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:26,875 INFO L93 Difference]: Finished difference Result 1140 states and 1877 transitions. [2025-03-03 14:13:26,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:13:26,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (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 144 [2025-03-03 14:13:26,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:26,881 INFO L225 Difference]: With dead ends: 1140 [2025-03-03 14:13:26,881 INFO L226 Difference]: Without dead ends: 665 [2025-03-03 14:13:26,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:26,884 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 847 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:26,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2283 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:13:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-03-03 14:13:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2025-03-03 14:13:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 537 states have (on average 1.62756052141527) internal successors, (874), 558 states have internal predecessors, (874), 98 states have call successors, (98), 28 states have call predecessors, (98), 29 states have return successors, (97), 91 states have call predecessors, (97), 93 states have call successors, (97) [2025-03-03 14:13:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1069 transitions. [2025-03-03 14:13:26,905 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1069 transitions. Word has length 144 [2025-03-03 14:13:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:26,905 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1069 transitions. [2025-03-03 14:13:26,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (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) [2025-03-03 14:13:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1069 transitions. [2025-03-03 14:13:26,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-03 14:13:26,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:26,908 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:26,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:27,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-03 14:13:27,109 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:27,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash 398287667, now seen corresponding path program 1 times [2025-03-03 14:13:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165310050] [2025-03-03 14:13:27,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:27,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-03 14:13:27,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-03 14:13:27,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:27,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:27,170 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:27,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:27,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165310050] [2025-03-03 14:13:27,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165310050] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:27,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566143533] [2025-03-03 14:13:27,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:27,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:27,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:27,173 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:27,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-03 14:13:27,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-03 14:13:27,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-03 14:13:27,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:27,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:27,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:13:27,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:27,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:27,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566143533] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:27,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:27,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:13:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384280635] [2025-03-03 14:13:27,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:27,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:27,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:27,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:27,506 INFO L87 Difference]: Start difference. First operand 665 states and 1069 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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) [2025-03-03 14:13:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:27,824 INFO L93 Difference]: Finished difference Result 1156 states and 1900 transitions. [2025-03-03 14:13:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:13:27,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 146 [2025-03-03 14:13:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:27,828 INFO L225 Difference]: With dead ends: 1156 [2025-03-03 14:13:27,828 INFO L226 Difference]: Without dead ends: 673 [2025-03-03 14:13:27,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:27,832 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 844 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:27,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 2280 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:13:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2025-03-03 14:13:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2025-03-03 14:13:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 544 states have (on average 1.6286764705882353) internal successors, (886), 565 states have internal predecessors, (886), 98 states have call successors, (98), 29 states have call predecessors, (98), 30 states have return successors, (98), 91 states have call predecessors, (98), 93 states have call successors, (98) [2025-03-03 14:13:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1082 transitions. [2025-03-03 14:13:27,849 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1082 transitions. Word has length 146 [2025-03-03 14:13:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:27,849 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1082 transitions. [2025-03-03 14:13:27,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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) [2025-03-03 14:13:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1082 transitions. [2025-03-03 14:13:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-03 14:13:27,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:27,851 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:27,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-03 14:13:28,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-03 14:13:28,053 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:28,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1812504653, now seen corresponding path program 1 times [2025-03-03 14:13:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:28,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400728747] [2025-03-03 14:13:28,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:28,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:13:28,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:13:28,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:28,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:13:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400728747] [2025-03-03 14:13:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400728747] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189101353] [2025-03-03 14:13:28,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:28,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:28,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:28,117 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:28,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-03 14:13:28,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:13:28,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:13:28,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:28,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:28,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:13:28,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:28,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:28,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189101353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:28,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:28,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:13:28,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510112460] [2025-03-03 14:13:28,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:28,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:28,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:28,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:28,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:28,487 INFO L87 Difference]: Start difference. First operand 673 states and 1082 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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) [2025-03-03 14:13:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:28,780 INFO L93 Difference]: Finished difference Result 1172 states and 1923 transitions. [2025-03-03 14:13:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:13:28,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 148 [2025-03-03 14:13:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:28,785 INFO L225 Difference]: With dead ends: 1172 [2025-03-03 14:13:28,785 INFO L226 Difference]: Without dead ends: 681 [2025-03-03 14:13:28,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:28,787 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 823 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:28,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 2277 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:13:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-03-03 14:13:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 681. [2025-03-03 14:13:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 551 states have (on average 1.6297640653357532) internal successors, (898), 572 states have internal predecessors, (898), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-03-03 14:13:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 1095 transitions. [2025-03-03 14:13:28,807 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 1095 transitions. Word has length 148 [2025-03-03 14:13:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:28,807 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 1095 transitions. [2025-03-03 14:13:28,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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) [2025-03-03 14:13:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 1095 transitions. [2025-03-03 14:13:28,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-03 14:13:28,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:28,810 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:28,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:29,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:29,012 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:29,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash 113684115, now seen corresponding path program 1 times [2025-03-03 14:13:29,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:29,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826912820] [2025-03-03 14:13:29,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:29,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-03 14:13:29,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-03 14:13:29,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:29,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:29,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:29,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826912820] [2025-03-03 14:13:29,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826912820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:29,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439639981] [2025-03-03 14:13:29,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:29,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:29,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:29,074 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:29,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-03 14:13:29,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-03 14:13:29,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-03 14:13:29,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:29,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:29,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:13:29,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:13:29,443 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439639981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:29,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:13:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234723393] [2025-03-03 14:13:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:29,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:29,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:29,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:29,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:29,444 INFO L87 Difference]: Start difference. First operand 681 states and 1095 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:13:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:29,675 INFO L93 Difference]: Finished difference Result 729 states and 1166 transitions. [2025-03-03 14:13:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:29,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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 150 [2025-03-03 14:13:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:29,679 INFO L225 Difference]: With dead ends: 729 [2025-03-03 14:13:29,679 INFO L226 Difference]: Without dead ends: 714 [2025-03-03 14:13:29,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:29,679 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 868 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:29,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1636 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:13:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2025-03-03 14:13:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 684. [2025-03-03 14:13:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 554 states have (on average 1.6263537906137184) internal successors, (901), 575 states have internal predecessors, (901), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-03-03 14:13:29,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1098 transitions. [2025-03-03 14:13:29,695 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1098 transitions. Word has length 150 [2025-03-03 14:13:29,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:29,695 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1098 transitions. [2025-03-03 14:13:29,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2025-03-03 14:13:29,695 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1098 transitions. [2025-03-03 14:13:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:13:29,698 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:29,698 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:29,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:29,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:29,899 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:29,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1846718479, now seen corresponding path program 1 times [2025-03-03 14:13:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:29,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630925479] [2025-03-03 14:13:29,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:29,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:29,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:13:29,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:13:29,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:29,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630925479] [2025-03-03 14:13:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630925479] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990755323] [2025-03-03 14:13:29,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:29,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:29,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:29,963 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:29,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-03 14:13:30,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:13:30,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:13:30,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:30,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:30,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:13:30,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:30,252 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:13:30,252 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990755323] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:30,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:30,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-03 14:13:30,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130822204] [2025-03-03 14:13:30,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:30,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:30,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:30,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:30,254 INFO L87 Difference]: Start difference. First operand 684 states and 1098 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-03 14:13:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:30,270 INFO L93 Difference]: Finished difference Result 699 states and 1116 transitions. [2025-03-03 14:13:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2025-03-03 14:13:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:30,274 INFO L225 Difference]: With dead ends: 699 [2025-03-03 14:13:30,274 INFO L226 Difference]: Without dead ends: 684 [2025-03-03 14:13:30,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:30,275 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 0 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:30,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3600 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:30,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-03 14:13:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2025-03-03 14:13:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 554 states have (on average 1.6245487364620939) internal successors, (900), 575 states have internal predecessors, (900), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-03-03 14:13:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1097 transitions. [2025-03-03 14:13:30,291 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1097 transitions. Word has length 156 [2025-03-03 14:13:30,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:30,291 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1097 transitions. [2025-03-03 14:13:30,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-03 14:13:30,291 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1097 transitions. [2025-03-03 14:13:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-03 14:13:30,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:30,293 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-03 14:13:30,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-03 14:13:30,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:30,498 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:30,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:30,498 INFO L85 PathProgramCache]: Analyzing trace with hash -518999116, now seen corresponding path program 1 times [2025-03-03 14:13:30,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:30,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804513502] [2025-03-03 14:13:30,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:30,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:30,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 14:13:30,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 14:13:30,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:30,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:13:30,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:30,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804513502] [2025-03-03 14:13:30,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804513502] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:30,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715277193] [2025-03-03 14:13:30,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:30,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:30,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:30,598 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:30,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-03 14:13:30,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 14:13:30,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 14:13:30,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:30,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:30,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:13:30,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-03 14:13:30,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:30,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715277193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:30,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:30,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-03 14:13:30,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175776716] [2025-03-03 14:13:30,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:30,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:30,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:30,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:30,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:13:30,881 INFO L87 Difference]: Start difference. First operand 684 states and 1097 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:13:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:30,919 INFO L93 Difference]: Finished difference Result 1350 states and 2175 transitions. [2025-03-03 14:13:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:30,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2025-03-03 14:13:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:30,923 INFO L225 Difference]: With dead ends: 1350 [2025-03-03 14:13:30,924 INFO L226 Difference]: Without dead ends: 684 [2025-03-03 14:13:30,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:13:30,929 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 7 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:30,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2676 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-03 14:13:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2025-03-03 14:13:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 554 states have (on average 1.6227436823104693) internal successors, (899), 575 states have internal predecessors, (899), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-03-03 14:13:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1096 transitions. [2025-03-03 14:13:30,946 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1096 transitions. Word has length 166 [2025-03-03 14:13:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:30,946 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1096 transitions. [2025-03-03 14:13:30,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:13:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1096 transitions. [2025-03-03 14:13:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-03 14:13:30,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:30,948 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:30,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:31,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:31,149 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:31,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash -711930317, now seen corresponding path program 1 times [2025-03-03 14:13:31,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:31,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843003082] [2025-03-03 14:13:31,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:31,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:31,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 14:13:31,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 14:13:31,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:31,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:13:31,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:31,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843003082] [2025-03-03 14:13:31,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843003082] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:31,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016359028] [2025-03-03 14:13:31,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:31,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:31,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:31,268 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:31,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-03 14:13:31,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 14:13:31,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 14:13:31,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:31,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:31,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:13:31,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:31,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016359028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:13:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861742555] [2025-03-03 14:13:31,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:31,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:13:31,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:31,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:13:31,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:13:31,608 INFO L87 Difference]: Start difference. First operand 684 states and 1096 transitions. Second operand has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:31,704 INFO L93 Difference]: Finished difference Result 1331 states and 2146 transitions. [2025-03-03 14:13:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:13:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2025-03-03 14:13:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:31,708 INFO L225 Difference]: With dead ends: 1331 [2025-03-03 14:13:31,708 INFO L226 Difference]: Without dead ends: 699 [2025-03-03 14:13:31,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:13:31,710 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 113 mSDsluCounter, 5198 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:31,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6079 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2025-03-03 14:13:31,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 678. [2025-03-03 14:13:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 548 states have (on average 1.6186131386861313) internal successors, (887), 569 states have internal predecessors, (887), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-03-03 14:13:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1084 transitions. [2025-03-03 14:13:31,731 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1084 transitions. Word has length 166 [2025-03-03 14:13:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:31,732 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 1084 transitions. [2025-03-03 14:13:31,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1084 transitions. [2025-03-03 14:13:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-03 14:13:31,734 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:31,734 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:31,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-03 14:13:31,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:31,935 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:31,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash -215519685, now seen corresponding path program 1 times [2025-03-03 14:13:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352549450] [2025-03-03 14:13:31,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:31,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:13:31,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:13:31,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:31,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:13:32,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:32,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352549450] [2025-03-03 14:13:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352549450] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:32,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005097891] [2025-03-03 14:13:32,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:32,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:32,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:32,061 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:32,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-03 14:13:32,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:13:32,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:13:32,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:32,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:32,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 14:13:32,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:32,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005097891] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:32,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:32,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-03 14:13:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188292819] [2025-03-03 14:13:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:32,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:13:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:32,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:13:32,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:32,337 INFO L87 Difference]: Start difference. First operand 678 states and 1084 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:32,385 INFO L93 Difference]: Finished difference Result 1325 states and 2132 transitions. [2025-03-03 14:13:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:13:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 168 [2025-03-03 14:13:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:32,396 INFO L225 Difference]: With dead ends: 1325 [2025-03-03 14:13:32,396 INFO L226 Difference]: Without dead ends: 678 [2025-03-03 14:13:32,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:32,398 INFO L435 NwaCegarLoop]: 913 mSDtfsCounter, 119 mSDsluCounter, 4439 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5352 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:32,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5352 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2025-03-03 14:13:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 657. [2025-03-03 14:13:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 527 states have (on average 1.618595825426945) internal successors, (853), 548 states have internal predecessors, (853), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-03-03 14:13:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1050 transitions. [2025-03-03 14:13:32,415 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1050 transitions. Word has length 168 [2025-03-03 14:13:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:32,416 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1050 transitions. [2025-03-03 14:13:32,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:32,416 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1050 transitions. [2025-03-03 14:13:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-03 14:13:32,418 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:32,419 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:32,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:32,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:32,620 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:32,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash -391433681, now seen corresponding path program 1 times [2025-03-03 14:13:32,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:32,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293838972] [2025-03-03 14:13:32,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:32,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-03 14:13:32,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-03 14:13:32,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:32,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:32,735 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:32,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:32,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293838972] [2025-03-03 14:13:32,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293838972] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:32,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387492625] [2025-03-03 14:13:32,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:32,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:32,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:32,738 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:32,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-03 14:13:32,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-03 14:13:33,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-03 14:13:33,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:33,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:33,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:33,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:13:33,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387492625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:33,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-03 14:13:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462434666] [2025-03-03 14:13:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:33,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:33,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:33,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:33,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:33,067 INFO L87 Difference]: Start difference. First operand 657 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:13:33,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:33,137 INFO L93 Difference]: Finished difference Result 1307 states and 2102 transitions. [2025-03-03 14:13:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:33,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2025-03-03 14:13:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:33,143 INFO L225 Difference]: With dead ends: 1307 [2025-03-03 14:13:33,143 INFO L226 Difference]: Without dead ends: 681 [2025-03-03 14:13:33,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:13:33,148 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 128 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2557 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:33,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2557 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-03-03 14:13:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 657. [2025-03-03 14:13:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 527 states have (on average 1.6166982922201139) internal successors, (852), 548 states have internal predecessors, (852), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2025-03-03 14:13:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1049 transitions. [2025-03-03 14:13:33,171 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1049 transitions. Word has length 170 [2025-03-03 14:13:33,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:33,171 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 1049 transitions. [2025-03-03 14:13:33,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:13:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1049 transitions. [2025-03-03 14:13:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-03 14:13:33,173 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:33,174 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:33,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-03 14:13:33,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-03 14:13:33,374 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:33,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:33,375 INFO L85 PathProgramCache]: Analyzing trace with hash -929364326, now seen corresponding path program 1 times [2025-03-03 14:13:33,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:33,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11681786] [2025-03-03 14:13:33,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:33,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:33,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 14:13:33,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 14:13:33,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:33,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:13:33,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:33,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11681786] [2025-03-03 14:13:33,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11681786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:33,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:13:33,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:13:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37481771] [2025-03-03 14:13:33,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:33,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:33,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:33,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:13:33,447 INFO L87 Difference]: Start difference. First operand 657 states and 1049 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:13:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:33,476 INFO L93 Difference]: Finished difference Result 1242 states and 2011 transitions. [2025-03-03 14:13:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:33,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2025-03-03 14:13:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:33,480 INFO L225 Difference]: With dead ends: 1242 [2025-03-03 14:13:33,481 INFO L226 Difference]: Without dead ends: 617 [2025-03-03 14:13:33,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:13:33,483 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 8 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:33,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2675 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2025-03-03 14:13:33,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2025-03-03 14:13:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 490 states have (on average 1.6122448979591837) internal successors, (790), 509 states have internal predecessors, (790), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2025-03-03 14:13:33,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 983 transitions. [2025-03-03 14:13:33,497 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 983 transitions. Word has length 171 [2025-03-03 14:13:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:33,499 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 983 transitions. [2025-03-03 14:13:33,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:13:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 983 transitions. [2025-03-03 14:13:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-03 14:13:33,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:33,501 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:33,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-03 14:13:33,502 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:33,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:33,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2051916185, now seen corresponding path program 1 times [2025-03-03 14:13:33,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:33,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520359837] [2025-03-03 14:13:33,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:33,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 14:13:33,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 14:13:33,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:33,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:13:33,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520359837] [2025-03-03 14:13:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520359837] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:33,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:13:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:13:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978804111] [2025-03-03 14:13:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:33,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:13:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:33,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:13:33,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:33,637 INFO L87 Difference]: Start difference. First operand 617 states and 983 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:33,677 INFO L93 Difference]: Finished difference Result 1145 states and 1852 transitions. [2025-03-03 14:13:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:13:33,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 171 [2025-03-03 14:13:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:33,682 INFO L225 Difference]: With dead ends: 1145 [2025-03-03 14:13:33,682 INFO L226 Difference]: Without dead ends: 603 [2025-03-03 14:13:33,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:33,684 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 89 mSDsluCounter, 4303 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:33,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5179 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-03-03 14:13:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2025-03-03 14:13:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 476 states have (on average 1.6071428571428572) internal successors, (765), 495 states have internal predecessors, (765), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2025-03-03 14:13:33,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 958 transitions. [2025-03-03 14:13:33,697 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 958 transitions. Word has length 171 [2025-03-03 14:13:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:33,697 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 958 transitions. [2025-03-03 14:13:33,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 958 transitions. [2025-03-03 14:13:33,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-03 14:13:33,699 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:33,699 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:33,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-03 14:13:33,699 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:33,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1358126432, now seen corresponding path program 1 times [2025-03-03 14:13:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316906953] [2025-03-03 14:13:33,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:33,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:33,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-03 14:13:33,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-03 14:13:33,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:33,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:33,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:33,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316906953] [2025-03-03 14:13:33,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316906953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:33,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:13:33,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:13:33,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444428080] [2025-03-03 14:13:33,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:33,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:13:33,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:33,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:13:33,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:13:33,901 INFO L87 Difference]: Start difference. First operand 603 states and 958 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:34,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:34,028 INFO L93 Difference]: Finished difference Result 1172 states and 1881 transitions. [2025-03-03 14:13:34,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 14:13:34,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2025-03-03 14:13:34,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:34,031 INFO L225 Difference]: With dead ends: 1172 [2025-03-03 14:13:34,032 INFO L226 Difference]: Without dead ends: 594 [2025-03-03 14:13:34,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:13:34,034 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 46 mSDsluCounter, 5810 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6646 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:34,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6646 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:34,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2025-03-03 14:13:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2025-03-03 14:13:34,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 467 states have (on average 1.6059957173447537) internal successors, (750), 486 states have internal predecessors, (750), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2025-03-03 14:13:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 943 transitions. [2025-03-03 14:13:34,046 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 943 transitions. Word has length 172 [2025-03-03 14:13:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:34,046 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 943 transitions. [2025-03-03 14:13:34,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 943 transitions. [2025-03-03 14:13:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-03 14:13:34,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:34,049 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:34,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-03 14:13:34,049 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:34,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:34,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1330774685, now seen corresponding path program 1 times [2025-03-03 14:13:34,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:34,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904302288] [2025-03-03 14:13:34,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:34,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:34,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-03 14:13:34,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-03 14:13:34,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:34,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:34,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:34,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904302288] [2025-03-03 14:13:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904302288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:34,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:13:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:13:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427165954] [2025-03-03 14:13:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:34,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:13:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:34,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:13:34,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:13:34,202 INFO L87 Difference]: Start difference. First operand 594 states and 943 transitions. Second operand has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:34,310 INFO L93 Difference]: Finished difference Result 1151 states and 1845 transitions. [2025-03-03 14:13:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 14:13:34,310 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2025-03-03 14:13:34,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:34,314 INFO L225 Difference]: With dead ends: 1151 [2025-03-03 14:13:34,314 INFO L226 Difference]: Without dead ends: 591 [2025-03-03 14:13:34,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:13:34,321 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 49 mSDsluCounter, 5805 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 6642 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:34,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 6642 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:34,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2025-03-03 14:13:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2025-03-03 14:13:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 464 states have (on average 1.5991379310344827) internal successors, (742), 483 states have internal predecessors, (742), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2025-03-03 14:13:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 935 transitions. [2025-03-03 14:13:34,335 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 935 transitions. Word has length 173 [2025-03-03 14:13:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:34,335 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 935 transitions. [2025-03-03 14:13:34,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:13:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 935 transitions. [2025-03-03 14:13:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-03 14:13:34,337 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:34,337 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:34,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-03 14:13:34,337 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:34,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:34,338 INFO L85 PathProgramCache]: Analyzing trace with hash 208868766, now seen corresponding path program 1 times [2025-03-03 14:13:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:34,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576334000] [2025-03-03 14:13:34,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:34,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:13:34,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:13:34,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:34,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:13:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576334000] [2025-03-03 14:13:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576334000] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:34,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278211864] [2025-03-03 14:13:34,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:34,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:34,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:34,436 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:34,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-03 14:13:34,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:13:34,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:13:34,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:34,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:34,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 1928 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:13:34,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-03 14:13:34,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:34,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278211864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:34,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:34,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-03 14:13:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430499931] [2025-03-03 14:13:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:34,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:34,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:34,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:34,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:13:34,789 INFO L87 Difference]: Start difference. First operand 591 states and 935 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:13:35,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:35,080 INFO L93 Difference]: Finished difference Result 1095 states and 1792 transitions. [2025-03-03 14:13:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:13:35,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2025-03-03 14:13:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:35,085 INFO L225 Difference]: With dead ends: 1095 [2025-03-03 14:13:35,085 INFO L226 Difference]: Without dead ends: 593 [2025-03-03 14:13:35,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:13:35,086 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 781 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:35,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2151 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:13:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2025-03-03 14:13:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2025-03-03 14:13:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 465 states have (on average 1.589247311827957) internal successors, (739), 485 states have internal predecessors, (739), 97 states have call successors, (97), 30 states have call predecessors, (97), 30 states have return successors, (97), 90 states have call predecessors, (97), 92 states have call successors, (97) [2025-03-03 14:13:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 933 transitions. [2025-03-03 14:13:35,103 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 933 transitions. Word has length 174 [2025-03-03 14:13:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:35,103 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 933 transitions. [2025-03-03 14:13:35,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:13:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 933 transitions. [2025-03-03 14:13:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-03 14:13:35,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:35,106 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:35,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-03 14:13:35,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:35,308 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:35,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash 483252702, now seen corresponding path program 1 times [2025-03-03 14:13:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084898947] [2025-03-03 14:13:35,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:35,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:13:35,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:13:35,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:35,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:13:35,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:35,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084898947] [2025-03-03 14:13:35,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084898947] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:35,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622913381] [2025-03-03 14:13:35,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:35,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:35,597 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:35,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-03 14:13:35,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:13:35,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:13:35,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:35,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:35,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 14:13:35,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:36,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:36,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622913381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:36,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:36,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-03 14:13:36,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668558847] [2025-03-03 14:13:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:36,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:13:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:36,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:13:36,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:13:36,022 INFO L87 Difference]: Start difference. First operand 593 states and 933 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 6 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-03 14:13:37,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:37,099 INFO L93 Difference]: Finished difference Result 1456 states and 2339 transitions. [2025-03-03 14:13:37,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:13:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 6 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 174 [2025-03-03 14:13:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:37,105 INFO L225 Difference]: With dead ends: 1456 [2025-03-03 14:13:37,105 INFO L226 Difference]: Without dead ends: 952 [2025-03-03 14:13:37,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:13:37,107 INFO L435 NwaCegarLoop]: 446 mSDtfsCounter, 1495 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:37,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 1299 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 14:13:37,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2025-03-03 14:13:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 904. [2025-03-03 14:13:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 681 states have (on average 1.566813509544787) internal successors, (1067), 716 states have internal predecessors, (1067), 178 states have call successors, (178), 41 states have call predecessors, (178), 44 states have return successors, (186), 170 states have call predecessors, (186), 173 states have call successors, (186) [2025-03-03 14:13:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1431 transitions. [2025-03-03 14:13:37,134 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1431 transitions. Word has length 174 [2025-03-03 14:13:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:37,135 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1431 transitions. [2025-03-03 14:13:37,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 6 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2025-03-03 14:13:37,135 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1431 transitions. [2025-03-03 14:13:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-03 14:13:37,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:37,137 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:37,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-03 14:13:37,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:37,338 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:37,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:37,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1438773981, now seen corresponding path program 1 times [2025-03-03 14:13:37,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:37,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807993721] [2025-03-03 14:13:37,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:37,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:37,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:13:37,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:13:37,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:37,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:13:37,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807993721] [2025-03-03 14:13:37,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807993721] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163491648] [2025-03-03 14:13:37,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:37,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:37,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:37,601 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:37,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-03 14:13:37,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:13:37,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:13:37,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:37,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:37,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-03 14:13:37,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:38,062 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-03 14:13:38,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:38,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163491648] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:38,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:38,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-03-03 14:13:38,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391664119] [2025-03-03 14:13:38,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:38,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:13:38,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:38,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:13:38,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-03-03 14:13:38,064 INFO L87 Difference]: Start difference. First operand 904 states and 1431 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-03 14:13:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:40,089 INFO L93 Difference]: Finished difference Result 2967 states and 4846 transitions. [2025-03-03 14:13:40,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-03 14:13:40,091 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 174 [2025-03-03 14:13:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:40,102 INFO L225 Difference]: With dead ends: 2967 [2025-03-03 14:13:40,102 INFO L226 Difference]: Without dead ends: 2154 [2025-03-03 14:13:40,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-03-03 14:13:40,106 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 2328 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 4700 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 5211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 4700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:40,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 2767 Invalid, 5211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 4700 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-03 14:13:40,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2025-03-03 14:13:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2009. [2025-03-03 14:13:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1516 states have (on average 1.5969656992084433) internal successors, (2421), 1590 states have internal predecessors, (2421), 393 states have call successors, (393), 84 states have call predecessors, (393), 99 states have return successors, (444), 382 states have call predecessors, (444), 388 states have call successors, (444) [2025-03-03 14:13:40,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3258 transitions. [2025-03-03 14:13:40,170 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3258 transitions. Word has length 174 [2025-03-03 14:13:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:40,170 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3258 transitions. [2025-03-03 14:13:40,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-03 14:13:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3258 transitions. [2025-03-03 14:13:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-03 14:13:40,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:40,172 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:40,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-03 14:13:40,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:40,373 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:40,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:40,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1255462845, now seen corresponding path program 1 times [2025-03-03 14:13:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:40,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672340889] [2025-03-03 14:13:40,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:40,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:40,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-03 14:13:40,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-03 14:13:40,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:40,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:13:40,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:40,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672340889] [2025-03-03 14:13:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672340889] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:40,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934777545] [2025-03-03 14:13:40,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:40,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:40,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:40,627 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:40,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-03 14:13:40,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-03 14:13:40,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-03 14:13:40,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:40,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:40,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-03 14:13:40,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:13:41,049 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:41,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934777545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:41,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:41,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-03 14:13:41,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328557182] [2025-03-03 14:13:41,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:41,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:13:41,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:41,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:13:41,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:13:41,056 INFO L87 Difference]: Start difference. First operand 2009 states and 3258 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-03 14:13:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:42,743 INFO L93 Difference]: Finished difference Result 4307 states and 7082 transitions. [2025-03-03 14:13:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 14:13:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 176 [2025-03-03 14:13:42,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:42,757 INFO L225 Difference]: With dead ends: 4307 [2025-03-03 14:13:42,758 INFO L226 Difference]: Without dead ends: 2391 [2025-03-03 14:13:42,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-03 14:13:42,766 INFO L435 NwaCegarLoop]: 486 mSDtfsCounter, 2078 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 2041 SdHoareTripleChecker+Invalid, 3830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:42,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 2041 Invalid, 3830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-03 14:13:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2025-03-03 14:13:42,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 2106. [2025-03-03 14:13:42,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1588 states have (on average 1.5913098236775818) internal successors, (2527), 1668 states have internal predecessors, (2527), 407 states have call successors, (407), 89 states have call predecessors, (407), 110 states have return successors, (494), 396 states have call predecessors, (494), 402 states have call successors, (494) [2025-03-03 14:13:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3428 transitions. [2025-03-03 14:13:42,857 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3428 transitions. Word has length 176 [2025-03-03 14:13:42,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:42,857 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 3428 transitions. [2025-03-03 14:13:42,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-03 14:13:42,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3428 transitions. [2025-03-03 14:13:42,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-03 14:13:42,859 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:42,860 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:42,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-03 14:13:43,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:43,060 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:43,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:43,061 INFO L85 PathProgramCache]: Analyzing trace with hash -180183464, now seen corresponding path program 1 times [2025-03-03 14:13:43,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:43,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139565273] [2025-03-03 14:13:43,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:43,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:13:43,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:13:43,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:43,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:13:43,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139565273] [2025-03-03 14:13:43,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139565273] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507455427] [2025-03-03 14:13:43,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:43,332 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:43,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-03 14:13:43,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:13:43,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:13:43,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:43,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:43,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:13:43,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:13:43,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507455427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:43,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:43,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-03 14:13:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254480710] [2025-03-03 14:13:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:43,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:13:43,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:43,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:13:43,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:13:43,631 INFO L87 Difference]: Start difference. First operand 2106 states and 3428 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:13:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:43,745 INFO L93 Difference]: Finished difference Result 5155 states and 8505 transitions. [2025-03-03 14:13:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:13:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2025-03-03 14:13:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:43,760 INFO L225 Difference]: With dead ends: 5155 [2025-03-03 14:13:43,760 INFO L226 Difference]: Without dead ends: 3146 [2025-03-03 14:13:43,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:13:43,767 INFO L435 NwaCegarLoop]: 1501 mSDtfsCounter, 770 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2353 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:43,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 2353 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2025-03-03 14:13:43,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 2102. [2025-03-03 14:13:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 1586 states have (on average 1.590794451450189) internal successors, (2523), 1664 states have internal predecessors, (2523), 407 states have call successors, (407), 89 states have call predecessors, (407), 108 states have return successors, (476), 396 states have call predecessors, (476), 402 states have call successors, (476) [2025-03-03 14:13:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 3406 transitions. [2025-03-03 14:13:43,861 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 3406 transitions. Word has length 181 [2025-03-03 14:13:43,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:43,862 INFO L471 AbstractCegarLoop]: Abstraction has 2102 states and 3406 transitions. [2025-03-03 14:13:43,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:13:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 3406 transitions. [2025-03-03 14:13:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-03 14:13:43,864 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:43,864 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:43,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-03 14:13:44,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-03 14:13:44,065 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:44,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:44,065 INFO L85 PathProgramCache]: Analyzing trace with hash -628880103, now seen corresponding path program 1 times [2025-03-03 14:13:44,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:44,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410789726] [2025-03-03 14:13:44,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:44,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:44,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:13:44,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:13:44,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:44,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:13:44,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410789726] [2025-03-03 14:13:44,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410789726] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:44,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754203060] [2025-03-03 14:13:44,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:44,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:44,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:44,338 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:44,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-03 14:13:44,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:13:44,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:13:44,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:44,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:44,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-03 14:13:44,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:13:44,688 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:44,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754203060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:44,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:44,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:13:44,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725771901] [2025-03-03 14:13:44,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:44,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:44,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:44,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:13:44,689 INFO L87 Difference]: Start difference. First operand 2102 states and 3406 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:13:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:45,720 INFO L93 Difference]: Finished difference Result 6259 states and 10254 transitions. [2025-03-03 14:13:45,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:45,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2025-03-03 14:13:45,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:45,769 INFO L225 Difference]: With dead ends: 6259 [2025-03-03 14:13:45,770 INFO L226 Difference]: Without dead ends: 4246 [2025-03-03 14:13:45,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:13:45,780 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 1885 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:45,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 558 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-03 14:13:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2025-03-03 14:13:45,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 4244. [2025-03-03 14:13:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 3201 states have (on average 1.5866916588566073) internal successors, (5079), 3363 states have internal predecessors, (5079), 817 states have call successors, (817), 171 states have call predecessors, (817), 225 states have return successors, (1008), 805 states have call predecessors, (1008), 812 states have call successors, (1008) [2025-03-03 14:13:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 6904 transitions. [2025-03-03 14:13:45,970 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 6904 transitions. Word has length 181 [2025-03-03 14:13:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:45,971 INFO L471 AbstractCegarLoop]: Abstraction has 4244 states and 6904 transitions. [2025-03-03 14:13:45,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:13:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 6904 transitions. [2025-03-03 14:13:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-03 14:13:45,975 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:45,975 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:45,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-03 14:13:46,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:46,176 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:46,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:46,176 INFO L85 PathProgramCache]: Analyzing trace with hash -893780808, now seen corresponding path program 1 times [2025-03-03 14:13:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:46,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673804403] [2025-03-03 14:13:46,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:46,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:46,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:13:46,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:13:46,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:46,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:13:46,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:46,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673804403] [2025-03-03 14:13:46,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673804403] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:46,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:13:46,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:13:46,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564347401] [2025-03-03 14:13:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:46,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:13:46,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:46,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:13:46,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:13:46,367 INFO L87 Difference]: Start difference. First operand 4244 states and 6904 transitions. Second operand has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:13:46,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:46,586 INFO L93 Difference]: Finished difference Result 6214 states and 10119 transitions. [2025-03-03 14:13:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:13:46,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2025-03-03 14:13:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:46,596 INFO L225 Difference]: With dead ends: 6214 [2025-03-03 14:13:46,596 INFO L226 Difference]: Without dead ends: 2053 [2025-03-03 14:13:46,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:13:46,605 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 31 mSDsluCounter, 6620 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7453 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:46,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7453 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:13:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2025-03-03 14:13:46,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2053. [2025-03-03 14:13:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1552 states have (on average 1.5844072164948453) internal successors, (2459), 1629 states have internal predecessors, (2459), 392 states have call successors, (392), 89 states have call predecessors, (392), 108 states have return successors, (462), 382 states have call predecessors, (462), 388 states have call successors, (462) [2025-03-03 14:13:46,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3313 transitions. [2025-03-03 14:13:46,693 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3313 transitions. Word has length 181 [2025-03-03 14:13:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:46,694 INFO L471 AbstractCegarLoop]: Abstraction has 2053 states and 3313 transitions. [2025-03-03 14:13:46,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:13:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3313 transitions. [2025-03-03 14:13:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-03-03 14:13:46,696 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:46,696 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:46,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-03 14:13:46,696 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:46,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:46,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1979370689, now seen corresponding path program 1 times [2025-03-03 14:13:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448851547] [2025-03-03 14:13:46,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:46,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:46,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-03 14:13:46,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-03 14:13:46,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:46,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:13:46,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:46,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448851547] [2025-03-03 14:13:46,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448851547] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:46,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965328999] [2025-03-03 14:13:46,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:46,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:46,930 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:46,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-03 14:13:47,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-03 14:13:47,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-03 14:13:47,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:47,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:47,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 14:13:47,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:13:47,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:47,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965328999] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:47,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:47,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2025-03-03 14:13:47,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693319680] [2025-03-03 14:13:47,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:47,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:13:47,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:47,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:13:47,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:13:47,280 INFO L87 Difference]: Start difference. First operand 2053 states and 3313 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-03 14:13:47,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:47,345 INFO L93 Difference]: Finished difference Result 2079 states and 3345 transitions. [2025-03-03 14:13:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:47,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2025-03-03 14:13:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:47,354 INFO L225 Difference]: With dead ends: 2079 [2025-03-03 14:13:47,354 INFO L226 Difference]: Without dead ends: 2065 [2025-03-03 14:13:47,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:13:47,356 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 0 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:47,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3385 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2025-03-03 14:13:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 2065. [2025-03-03 14:13:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1564 states have (on average 1.579923273657289) internal successors, (2471), 1641 states have internal predecessors, (2471), 392 states have call successors, (392), 89 states have call predecessors, (392), 108 states have return successors, (462), 382 states have call predecessors, (462), 388 states have call successors, (462) [2025-03-03 14:13:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 3325 transitions. [2025-03-03 14:13:47,443 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 3325 transitions. Word has length 182 [2025-03-03 14:13:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:47,443 INFO L471 AbstractCegarLoop]: Abstraction has 2065 states and 3325 transitions. [2025-03-03 14:13:47,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-03 14:13:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 3325 transitions. [2025-03-03 14:13:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2025-03-03 14:13:47,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:47,447 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:47,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-03 14:13:47,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:47,648 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:47,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1340192936, now seen corresponding path program 1 times [2025-03-03 14:13:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:47,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959256112] [2025-03-03 14:13:47,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:47,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 225 statements into 1 equivalence classes. [2025-03-03 14:13:47,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 225 of 225 statements. [2025-03-03 14:13:47,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:47,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-03 14:13:47,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959256112] [2025-03-03 14:13:47,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959256112] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000275412] [2025-03-03 14:13:47,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:47,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:47,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:47,935 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:47,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-03 14:13:48,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 225 statements into 1 equivalence classes. [2025-03-03 14:13:48,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 225 of 225 statements. [2025-03-03 14:13:48,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:48,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:48,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 14:13:48,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:48,418 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-03 14:13:48,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:13:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-03-03 14:13:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000275412] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:13:48,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:13:48,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2025-03-03 14:13:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624688152] [2025-03-03 14:13:48,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:13:48,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 14:13:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:48,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 14:13:48,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-03-03 14:13:48,911 INFO L87 Difference]: Start difference. First operand 2065 states and 3325 transitions. Second operand has 22 states, 22 states have (on average 13.818181818181818) internal successors, (304), 18 states have internal predecessors, (304), 10 states have call successors, (59), 6 states have call predecessors, (59), 13 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) [2025-03-03 14:13:59,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:59,235 INFO L93 Difference]: Finished difference Result 12044 states and 19952 transitions. [2025-03-03 14:13:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-03-03 14:13:59,236 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.818181818181818) internal successors, (304), 18 states have internal predecessors, (304), 10 states have call successors, (59), 6 states have call predecessors, (59), 13 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) Word has length 225 [2025-03-03 14:13:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:59,283 INFO L225 Difference]: With dead ends: 12044 [2025-03-03 14:13:59,283 INFO L226 Difference]: Without dead ends: 10052 [2025-03-03 14:13:59,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=680, Invalid=4576, Unknown=0, NotChecked=0, Total=5256 [2025-03-03 14:13:59,300 INFO L435 NwaCegarLoop]: 1885 mSDtfsCounter, 10822 mSDsluCounter, 16649 mSDsCounter, 0 mSdLazyCounter, 30424 mSolverCounterSat, 3896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10822 SdHoareTripleChecker+Valid, 18534 SdHoareTripleChecker+Invalid, 34320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3896 IncrementalHoareTripleChecker+Valid, 30424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:59,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10822 Valid, 18534 Invalid, 34320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3896 Valid, 30424 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2025-03-03 14:13:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10052 states. [2025-03-03 14:13:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10052 to 9940. [2025-03-03 14:13:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9940 states, 7203 states have (on average 1.5712897403859503) internal successors, (11318), 7650 states have internal predecessors, (11318), 2228 states have call successors, (2228), 336 states have call predecessors, (2228), 508 states have return successors, (2883), 2241 states have call predecessors, (2883), 2224 states have call successors, (2883) [2025-03-03 14:13:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9940 states to 9940 states and 16429 transitions. [2025-03-03 14:13:59,812 INFO L78 Accepts]: Start accepts. Automaton has 9940 states and 16429 transitions. Word has length 225 [2025-03-03 14:13:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:59,813 INFO L471 AbstractCegarLoop]: Abstraction has 9940 states and 16429 transitions. [2025-03-03 14:13:59,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.818181818181818) internal successors, (304), 18 states have internal predecessors, (304), 10 states have call successors, (59), 6 states have call predecessors, (59), 13 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59) [2025-03-03 14:13:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9940 states and 16429 transitions. [2025-03-03 14:13:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2025-03-03 14:13:59,823 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:59,823 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:59,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-03 14:14:00,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-03 14:14:00,024 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:00,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1021560049, now seen corresponding path program 1 times [2025-03-03 14:14:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977852805] [2025-03-03 14:14:00,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:00,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:00,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-03-03 14:14:00,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-03-03 14:14:00,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:00,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2025-03-03 14:14:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:00,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977852805] [2025-03-03 14:14:00,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977852805] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:00,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:00,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 14:14:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490845359] [2025-03-03 14:14:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:00,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:00,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:00,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:00,233 INFO L87 Difference]: Start difference. First operand 9940 states and 16429 transitions. Second operand has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-03 14:14:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:00,628 INFO L93 Difference]: Finished difference Result 14250 states and 23487 transitions. [2025-03-03 14:14:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:00,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 228 [2025-03-03 14:14:00,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:00,693 INFO L225 Difference]: With dead ends: 14250 [2025-03-03 14:14:00,693 INFO L226 Difference]: Without dead ends: 4383 [2025-03-03 14:14:00,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:00,713 INFO L435 NwaCegarLoop]: 829 mSDtfsCounter, 39 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 5751 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:00,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 5751 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:00,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4383 states. [2025-03-03 14:14:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4383 to 4383. [2025-03-03 14:14:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 3241 states have (on average 1.57790805307004) internal successors, (5114), 3443 states have internal predecessors, (5114), 892 states have call successors, (892), 170 states have call predecessors, (892), 249 states have return successors, (1133), 885 states have call predecessors, (1133), 888 states have call successors, (1133) [2025-03-03 14:14:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 7139 transitions. [2025-03-03 14:14:00,889 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 7139 transitions. Word has length 228 [2025-03-03 14:14:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:00,889 INFO L471 AbstractCegarLoop]: Abstraction has 4383 states and 7139 transitions. [2025-03-03 14:14:00,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2025-03-03 14:14:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 7139 transitions. [2025-03-03 14:14:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2025-03-03 14:14:00,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:00,893 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:00,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-03 14:14:00,893 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:00,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:00,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2090765229, now seen corresponding path program 1 times [2025-03-03 14:14:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442751279] [2025-03-03 14:14:00,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:00,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 232 statements into 1 equivalence classes. [2025-03-03 14:14:00,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 232 of 232 statements. [2025-03-03 14:14:00,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:00,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-03 14:14:01,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442751279] [2025-03-03 14:14:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442751279] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302237748] [2025-03-03 14:14:01,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:01,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:01,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:01,120 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:01,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-03 14:14:01,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 232 statements into 1 equivalence classes. [2025-03-03 14:14:01,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 232 of 232 statements. [2025-03-03 14:14:01,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:01,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:01,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 2072 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:01,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-03-03 14:14:01,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:01,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302237748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:01,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:01,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-03 14:14:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886068603] [2025-03-03 14:14:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:01,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:01,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:01,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:01,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:01,433 INFO L87 Difference]: Start difference. First operand 4383 states and 7139 transitions. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:14:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:01,620 INFO L93 Difference]: Finished difference Result 8717 states and 14247 transitions. [2025-03-03 14:14:01,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:01,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 232 [2025-03-03 14:14:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:01,637 INFO L225 Difference]: With dead ends: 8717 [2025-03-03 14:14:01,637 INFO L226 Difference]: Without dead ends: 4423 [2025-03-03 14:14:01,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:01,648 INFO L435 NwaCegarLoop]: 836 mSDtfsCounter, 0 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:01,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4173 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2025-03-03 14:14:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4423. [2025-03-03 14:14:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4423 states, 3273 states have (on average 1.572257867399939) internal successors, (5146), 3475 states have internal predecessors, (5146), 892 states have call successors, (892), 170 states have call predecessors, (892), 257 states have return successors, (1141), 893 states have call predecessors, (1141), 888 states have call successors, (1141) [2025-03-03 14:14:01,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 7179 transitions. [2025-03-03 14:14:01,836 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 7179 transitions. Word has length 232 [2025-03-03 14:14:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:01,836 INFO L471 AbstractCegarLoop]: Abstraction has 4423 states and 7179 transitions. [2025-03-03 14:14:01,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 5 states have internal predecessors, (142), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:14:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 7179 transitions. [2025-03-03 14:14:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2025-03-03 14:14:01,840 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:01,840 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:01,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-03 14:14:02,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-03 14:14:02,040 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:02,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:02,041 INFO L85 PathProgramCache]: Analyzing trace with hash 193283555, now seen corresponding path program 1 times [2025-03-03 14:14:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:02,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280454166] [2025-03-03 14:14:02,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:02,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:02,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 235 statements into 1 equivalence classes. [2025-03-03 14:14:02,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 235 of 235 statements. [2025-03-03 14:14:02,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:02,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-03 14:14:02,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280454166] [2025-03-03 14:14:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280454166] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137834631] [2025-03-03 14:14:02,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:02,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:02,376 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:02,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-03 14:14:02,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 235 statements into 1 equivalence classes. [2025-03-03 14:14:02,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 235 of 235 statements. [2025-03-03 14:14:02,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:02,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:02,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:02,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-03-03 14:14:02,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:02,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137834631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:02,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:02,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2025-03-03 14:14:02,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964202664] [2025-03-03 14:14:02,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:02,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:02,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:02,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:02,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:02,712 INFO L87 Difference]: Start difference. First operand 4423 states and 7179 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-03 14:14:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:03,079 INFO L93 Difference]: Finished difference Result 8889 states and 14495 transitions. [2025-03-03 14:14:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 235 [2025-03-03 14:14:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:03,104 INFO L225 Difference]: With dead ends: 8889 [2025-03-03 14:14:03,104 INFO L226 Difference]: Without dead ends: 4483 [2025-03-03 14:14:03,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:14:03,122 INFO L435 NwaCegarLoop]: 820 mSDtfsCounter, 10 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:03,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2423 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2025-03-03 14:14:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 4477. [2025-03-03 14:14:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 3327 states have (on average 1.5437330928764652) internal successors, (5136), 3519 states have internal predecessors, (5136), 892 states have call successors, (892), 180 states have call predecessors, (892), 257 states have return successors, (1141), 893 states have call predecessors, (1141), 888 states have call successors, (1141) [2025-03-03 14:14:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 7169 transitions. [2025-03-03 14:14:03,361 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 7169 transitions. Word has length 235 [2025-03-03 14:14:03,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:03,361 INFO L471 AbstractCegarLoop]: Abstraction has 4477 states and 7169 transitions. [2025-03-03 14:14:03,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-03 14:14:03,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 7169 transitions. [2025-03-03 14:14:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2025-03-03 14:14:03,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:03,365 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:03,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:03,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:03,566 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:03,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:03,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1541507572, now seen corresponding path program 1 times [2025-03-03 14:14:03,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:03,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079323258] [2025-03-03 14:14:03,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:03,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:03,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-03-03 14:14:03,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-03-03 14:14:03,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:03,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-03-03 14:14:03,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079323258] [2025-03-03 14:14:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079323258] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438014533] [2025-03-03 14:14:03,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:03,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:03,825 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:03,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-03 14:14:03,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-03-03 14:14:04,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-03-03 14:14:04,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:04,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:04,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 2090 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 14:14:04,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-03 14:14:04,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:14:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2025-03-03 14:14:04,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438014533] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:14:04,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:14:04,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2025-03-03 14:14:04,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132798029] [2025-03-03 14:14:04,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:14:04,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-03 14:14:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:04,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-03 14:14:04,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-03-03 14:14:04,613 INFO L87 Difference]: Start difference. First operand 4477 states and 7169 transitions. Second operand has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 19 states have internal predecessors, (285), 11 states have call successors, (58), 6 states have call predecessors, (58), 14 states have return successors, (59), 15 states have call predecessors, (59), 10 states have call successors, (59) [2025-03-03 14:14:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:09,697 INFO L93 Difference]: Finished difference Result 14281 states and 23229 transitions. [2025-03-03 14:14:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-03 14:14:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 19 states have internal predecessors, (285), 11 states have call successors, (58), 6 states have call predecessors, (58), 14 states have return successors, (59), 15 states have call predecessors, (59), 10 states have call successors, (59) Word has length 237 [2025-03-03 14:14:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:09,738 INFO L225 Difference]: With dead ends: 14281 [2025-03-03 14:14:09,738 INFO L226 Difference]: Without dead ends: 9893 [2025-03-03 14:14:09,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2025-03-03 14:14:09,753 INFO L435 NwaCegarLoop]: 806 mSDtfsCounter, 5003 mSDsluCounter, 8109 mSDsCounter, 0 mSdLazyCounter, 15420 mSolverCounterSat, 1503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5003 SdHoareTripleChecker+Valid, 8915 SdHoareTripleChecker+Invalid, 16923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1503 IncrementalHoareTripleChecker+Valid, 15420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:09,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5003 Valid, 8915 Invalid, 16923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1503 Valid, 15420 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2025-03-03 14:14:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9893 states. [2025-03-03 14:14:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9893 to 9775. [2025-03-03 14:14:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9775 states, 7103 states have (on average 1.5444178516119949) internal successors, (10970), 7537 states have internal predecessors, (10970), 2148 states have call successors, (2148), 348 states have call predecessors, (2148), 523 states have return successors, (2769), 2177 states have call predecessors, (2769), 2144 states have call successors, (2769) [2025-03-03 14:14:10,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9775 states to 9775 states and 15887 transitions. [2025-03-03 14:14:10,265 INFO L78 Accepts]: Start accepts. Automaton has 9775 states and 15887 transitions. Word has length 237 [2025-03-03 14:14:10,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:10,265 INFO L471 AbstractCegarLoop]: Abstraction has 9775 states and 15887 transitions. [2025-03-03 14:14:10,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.391304347826088) internal successors, (285), 19 states have internal predecessors, (285), 11 states have call successors, (58), 6 states have call predecessors, (58), 14 states have return successors, (59), 15 states have call predecessors, (59), 10 states have call successors, (59) [2025-03-03 14:14:10,266 INFO L276 IsEmpty]: Start isEmpty. Operand 9775 states and 15887 transitions. [2025-03-03 14:14:10,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2025-03-03 14:14:10,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:10,271 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:10,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-03 14:14:10,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:10,471 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:10,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1305812205, now seen corresponding path program 1 times [2025-03-03 14:14:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:10,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986933342] [2025-03-03 14:14:10,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:10,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:10,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 241 statements into 1 equivalence classes. [2025-03-03 14:14:10,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 241 of 241 statements. [2025-03-03 14:14:10,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:10,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-03-03 14:14:10,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:10,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986933342] [2025-03-03 14:14:10,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986933342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:10,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:10,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:14:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103023955] [2025-03-03 14:14:10,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:10,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:10,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:10,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:10,577 INFO L87 Difference]: Start difference. First operand 9775 states and 15887 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-03 14:14:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:11,060 INFO L93 Difference]: Finished difference Result 19561 states and 31881 transitions. [2025-03-03 14:14:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:11,060 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 241 [2025-03-03 14:14:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:11,106 INFO L225 Difference]: With dead ends: 19561 [2025-03-03 14:14:11,106 INFO L226 Difference]: Without dead ends: 9883 [2025-03-03 14:14:11,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:11,134 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 0 mSDsluCounter, 3297 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:11,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4129 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9883 states. [2025-03-03 14:14:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9883 to 9859. [2025-03-03 14:14:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9859 states, 7175 states have (on average 1.5389547038327527) internal successors, (11042), 7597 states have internal predecessors, (11042), 2148 states have call successors, (2148), 348 states have call predecessors, (2148), 535 states have return successors, (2817), 2201 states have call predecessors, (2817), 2144 states have call successors, (2817) [2025-03-03 14:14:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9859 states to 9859 states and 16007 transitions. [2025-03-03 14:14:11,764 INFO L78 Accepts]: Start accepts. Automaton has 9859 states and 16007 transitions. Word has length 241 [2025-03-03 14:14:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:11,764 INFO L471 AbstractCegarLoop]: Abstraction has 9859 states and 16007 transitions. [2025-03-03 14:14:11,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-03 14:14:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 9859 states and 16007 transitions. [2025-03-03 14:14:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2025-03-03 14:14:11,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:11,771 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:11,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2025-03-03 14:14:11,772 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1579780087, now seen corresponding path program 1 times [2025-03-03 14:14:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893146200] [2025-03-03 14:14:11,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:11,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-03 14:14:11,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-03 14:14:11,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:11,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-03 14:14:12,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:12,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893146200] [2025-03-03 14:14:12,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893146200] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:12,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399261983] [2025-03-03 14:14:12,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:12,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:12,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:12,151 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:12,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-03 14:14:12,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 311 statements into 1 equivalence classes. [2025-03-03 14:14:12,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 311 of 311 statements. [2025-03-03 14:14:12,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:12,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:12,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:14:12,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2025-03-03 14:14:12,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399261983] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:12,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:12,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:14:12,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63059615] [2025-03-03 14:14:12,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:12,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:14:12,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:12,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:14:12,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:12,532 INFO L87 Difference]: Start difference. First operand 9859 states and 16007 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:13,355 INFO L93 Difference]: Finished difference Result 25123 states and 41019 transitions. [2025-03-03 14:14:13,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:14:13,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 311 [2025-03-03 14:14:13,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:13,442 INFO L225 Difference]: With dead ends: 25123 [2025-03-03 14:14:13,443 INFO L226 Difference]: Without dead ends: 15353 [2025-03-03 14:14:13,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:13,481 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 822 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:13,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1539 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15353 states. [2025-03-03 14:14:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15353 to 15255. [2025-03-03 14:14:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15255 states, 11131 states have (on average 1.5313987961548827) internal successors, (17046), 11761 states have internal predecessors, (17046), 3274 states have call successors, (3274), 584 states have call predecessors, (3274), 849 states have return successors, (4449), 3341 states have call predecessors, (4449), 3270 states have call successors, (4449) [2025-03-03 14:14:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15255 states to 15255 states and 24769 transitions. [2025-03-03 14:14:14,280 INFO L78 Accepts]: Start accepts. Automaton has 15255 states and 24769 transitions. Word has length 311 [2025-03-03 14:14:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:14,280 INFO L471 AbstractCegarLoop]: Abstraction has 15255 states and 24769 transitions. [2025-03-03 14:14:14,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 15255 states and 24769 transitions. [2025-03-03 14:14:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-03-03 14:14:14,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:14,286 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:14,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-03 14:14:14,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:14,487 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:14,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -815671211, now seen corresponding path program 1 times [2025-03-03 14:14:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:14,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259984448] [2025-03-03 14:14:14,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:14,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:14,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-03 14:14:14,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-03 14:14:14,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:14,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:14,772 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-03 14:14:14,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259984448] [2025-03-03 14:14:14,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259984448] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:14,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046872984] [2025-03-03 14:14:14,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:14,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:14,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:14,774 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:14,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-03 14:14:14,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 313 statements into 1 equivalence classes. [2025-03-03 14:14:15,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 313 of 313 statements. [2025-03-03 14:14:15,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:15,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:15,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:14:15,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2025-03-03 14:14:15,134 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046872984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:15,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:15,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:14:15,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388015810] [2025-03-03 14:14:15,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:15,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:14:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:15,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:14:15,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:15,135 INFO L87 Difference]: Start difference. First operand 15255 states and 24769 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:16,288 INFO L93 Difference]: Finished difference Result 35747 states and 58516 transitions. [2025-03-03 14:14:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:14:16,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 313 [2025-03-03 14:14:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:16,411 INFO L225 Difference]: With dead ends: 35747 [2025-03-03 14:14:16,412 INFO L226 Difference]: Without dead ends: 20573 [2025-03-03 14:14:16,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:16,478 INFO L435 NwaCegarLoop]: 1403 mSDtfsCounter, 716 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:16,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2119 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20573 states. [2025-03-03 14:14:17,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20573 to 20535. [2025-03-03 14:14:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20535 states, 14991 states have (on average 1.5218464411980521) internal successors, (22814), 15828 states have internal predecessors, (22814), 4388 states have call successors, (4388), 812 states have call predecessors, (4388), 1155 states have return successors, (6114), 4470 states have call predecessors, (6114), 4384 states have call successors, (6114) [2025-03-03 14:14:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20535 states to 20535 states and 33316 transitions. [2025-03-03 14:14:18,020 INFO L78 Accepts]: Start accepts. Automaton has 20535 states and 33316 transitions. Word has length 313 [2025-03-03 14:14:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:18,021 INFO L471 AbstractCegarLoop]: Abstraction has 20535 states and 33316 transitions. [2025-03-03 14:14:18,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 20535 states and 33316 transitions. [2025-03-03 14:14:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2025-03-03 14:14:18,027 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:18,028 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:18,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-03 14:14:18,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-03 14:14:18,228 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:18,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:18,229 INFO L85 PathProgramCache]: Analyzing trace with hash -994129741, now seen corresponding path program 1 times [2025-03-03 14:14:18,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:18,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549867257] [2025-03-03 14:14:18,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:18,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-03 14:14:18,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-03 14:14:18,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:18,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-03 14:14:18,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549867257] [2025-03-03 14:14:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549867257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:18,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523636768] [2025-03-03 14:14:18,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:18,590 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:18,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-03 14:14:18,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 315 statements into 1 equivalence classes. [2025-03-03 14:14:18,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 315 of 315 statements. [2025-03-03 14:14:18,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:18,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:18,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:14:18,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2025-03-03 14:14:18,947 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523636768] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:18,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:18,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:14:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157665441] [2025-03-03 14:14:18,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:18,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:14:18,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:18,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:14:18,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:18,948 INFO L87 Difference]: Start difference. First operand 20535 states and 33316 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:20,272 INFO L93 Difference]: Finished difference Result 46339 states and 75745 transitions. [2025-03-03 14:14:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:14:20,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 315 [2025-03-03 14:14:20,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:20,419 INFO L225 Difference]: With dead ends: 46339 [2025-03-03 14:14:20,419 INFO L226 Difference]: Without dead ends: 25889 [2025-03-03 14:14:20,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:20,490 INFO L435 NwaCegarLoop]: 1420 mSDtfsCounter, 703 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:20,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 2148 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:20,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25889 states. [2025-03-03 14:14:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25889 to 25827. [2025-03-03 14:14:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25827 states, 18851 states have (on average 1.514508514137181) internal successors, (28550), 19899 states have internal predecessors, (28550), 5510 states have call successors, (5510), 1040 states have call predecessors, (5510), 1465 states have return successors, (7915), 5607 states have call predecessors, (7915), 5506 states have call successors, (7915) [2025-03-03 14:14:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25827 states to 25827 states and 41975 transitions. [2025-03-03 14:14:21,869 INFO L78 Accepts]: Start accepts. Automaton has 25827 states and 41975 transitions. Word has length 315 [2025-03-03 14:14:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:21,870 INFO L471 AbstractCegarLoop]: Abstraction has 25827 states and 41975 transitions. [2025-03-03 14:14:21,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 25827 states and 41975 transitions. [2025-03-03 14:14:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2025-03-03 14:14:21,877 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:21,877 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:21,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-03-03 14:14:22,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-03-03 14:14:22,078 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:22,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1356229377, now seen corresponding path program 1 times [2025-03-03 14:14:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650733417] [2025-03-03 14:14:22,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:22,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 316 statements into 1 equivalence classes. [2025-03-03 14:14:22,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 316 of 316 statements. [2025-03-03 14:14:22,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:22,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:22,350 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-03 14:14:22,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:22,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650733417] [2025-03-03 14:14:22,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650733417] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:22,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59565415] [2025-03-03 14:14:22,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:22,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:22,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:22,353 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:22,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-03-03 14:14:22,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 316 statements into 1 equivalence classes. [2025-03-03 14:14:22,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 316 of 316 statements. [2025-03-03 14:14:22,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:22,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:22,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:22,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-03 14:14:22,757 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:22,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59565415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:22,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:22,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:14:22,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781452579] [2025-03-03 14:14:22,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:22,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:22,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:22,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:22,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:22,759 INFO L87 Difference]: Start difference. First operand 25827 states and 41975 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-03 14:14:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:24,832 INFO L93 Difference]: Finished difference Result 52457 states and 86391 transitions. [2025-03-03 14:14:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2025-03-03 14:14:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:25,008 INFO L225 Difference]: With dead ends: 52457 [2025-03-03 14:14:25,008 INFO L226 Difference]: Without dead ends: 26727 [2025-03-03 14:14:25,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:25,125 INFO L435 NwaCegarLoop]: 774 mSDtfsCounter, 144 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:25,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2299 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26727 states. [2025-03-03 14:14:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26727 to 26607. [2025-03-03 14:14:26,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26607 states, 19611 states have (on average 1.5302636275559636) internal successors, (30010), 20659 states have internal predecessors, (30010), 5510 states have call successors, (5510), 1060 states have call predecessors, (5510), 1485 states have return successors, (7915), 5607 states have call predecessors, (7915), 5506 states have call successors, (7915) [2025-03-03 14:14:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26607 states to 26607 states and 43435 transitions. [2025-03-03 14:14:26,665 INFO L78 Accepts]: Start accepts. Automaton has 26607 states and 43435 transitions. Word has length 316 [2025-03-03 14:14:26,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:26,665 INFO L471 AbstractCegarLoop]: Abstraction has 26607 states and 43435 transitions. [2025-03-03 14:14:26,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-03 14:14:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 26607 states and 43435 transitions. [2025-03-03 14:14:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-03-03 14:14:26,672 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:26,672 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:26,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-03-03 14:14:26,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-03-03 14:14:26,873 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:26,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1360721486, now seen corresponding path program 1 times [2025-03-03 14:14:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:26,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379110240] [2025-03-03 14:14:26,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:26,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:26,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-03 14:14:26,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-03 14:14:26,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:26,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2025-03-03 14:14:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379110240] [2025-03-03 14:14:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379110240] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463719155] [2025-03-03 14:14:27,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:27,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:27,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:27,141 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:27,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-03-03 14:14:27,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-03 14:14:27,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-03 14:14:27,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:27,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:27,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:14:27,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2025-03-03 14:14:27,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463719155] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:27,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:14:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339921534] [2025-03-03 14:14:27,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:27,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:14:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:27,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:14:27,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:27,504 INFO L87 Difference]: Start difference. First operand 26607 states and 43435 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:29,057 INFO L93 Difference]: Finished difference Result 58635 states and 96406 transitions. [2025-03-03 14:14:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:14:29,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 322 [2025-03-03 14:14:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:29,244 INFO L225 Difference]: With dead ends: 58635 [2025-03-03 14:14:29,244 INFO L226 Difference]: Without dead ends: 32117 [2025-03-03 14:14:29,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:29,348 INFO L435 NwaCegarLoop]: 1431 mSDtfsCounter, 690 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:29,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 2170 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32117 states. [2025-03-03 14:14:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32117 to 32063. [2025-03-03 14:14:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32063 states, 23631 states have (on average 1.522999449875164) internal successors, (35990), 24890 states have internal predecessors, (35990), 6632 states have call successors, (6632), 1292 states have call predecessors, (6632), 1799 states have return successors, (9804), 6744 states have call predecessors, (9804), 6628 states have call successors, (9804) [2025-03-03 14:14:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32063 states to 32063 states and 52426 transitions. [2025-03-03 14:14:31,428 INFO L78 Accepts]: Start accepts. Automaton has 32063 states and 52426 transitions. Word has length 322 [2025-03-03 14:14:31,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:31,429 INFO L471 AbstractCegarLoop]: Abstraction has 32063 states and 52426 transitions. [2025-03-03 14:14:31,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-03 14:14:31,429 INFO L276 IsEmpty]: Start isEmpty. Operand 32063 states and 52426 transitions. [2025-03-03 14:14:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2025-03-03 14:14:31,439 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:31,439 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:31,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:31,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-03-03 14:14:31,640 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:31,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash 542152926, now seen corresponding path program 1 times [2025-03-03 14:14:31,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:31,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731717669] [2025-03-03 14:14:31,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:31,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:31,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-03-03 14:14:31,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-03-03 14:14:31,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:31,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2025-03-03 14:14:32,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:32,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731717669] [2025-03-03 14:14:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731717669] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:32,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094628708] [2025-03-03 14:14:32,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:32,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:32,002 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:32,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-03-03 14:14:32,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 321 statements into 1 equivalence classes. [2025-03-03 14:14:32,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 321 of 321 statements. [2025-03-03 14:14:32,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:32,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:32,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:32,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-03-03 14:14:32,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:32,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094628708] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:32,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:32,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:14:32,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733640613] [2025-03-03 14:14:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:32,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:32,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:32,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:32,396 INFO L87 Difference]: Start difference. First operand 32063 states and 52426 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-03 14:14:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:34,329 INFO L93 Difference]: Finished difference Result 65177 states and 107750 transitions. [2025-03-03 14:14:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:34,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 321 [2025-03-03 14:14:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:34,489 INFO L225 Difference]: With dead ends: 65177 [2025-03-03 14:14:34,489 INFO L226 Difference]: Without dead ends: 33215 [2025-03-03 14:14:34,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:34,573 INFO L435 NwaCegarLoop]: 773 mSDtfsCounter, 142 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:34,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2296 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:34,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33215 states. [2025-03-03 14:14:36,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33215 to 32999. [2025-03-03 14:14:36,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32999 states, 24543 states have (on average 1.5377908161186489) internal successors, (37742), 25802 states have internal predecessors, (37742), 6632 states have call successors, (6632), 1316 states have call predecessors, (6632), 1823 states have return successors, (9804), 6744 states have call predecessors, (9804), 6628 states have call successors, (9804) [2025-03-03 14:14:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32999 states to 32999 states and 54178 transitions. [2025-03-03 14:14:36,245 INFO L78 Accepts]: Start accepts. Automaton has 32999 states and 54178 transitions. Word has length 321 [2025-03-03 14:14:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:36,246 INFO L471 AbstractCegarLoop]: Abstraction has 32999 states and 54178 transitions. [2025-03-03 14:14:36,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-03 14:14:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 32999 states and 54178 transitions. [2025-03-03 14:14:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-03-03 14:14:36,255 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:36,255 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:36,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-03-03 14:14:36,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:36,456 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:36,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash 862666755, now seen corresponding path program 1 times [2025-03-03 14:14:36,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:36,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024231758] [2025-03-03 14:14:36,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:36,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:36,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-03 14:14:36,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-03 14:14:36,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:36,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-03-03 14:14:36,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:36,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024231758] [2025-03-03 14:14:36,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024231758] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:36,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:36,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:14:36,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497621269] [2025-03-03 14:14:36,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:36,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:36,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:36,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:36,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:36,576 INFO L87 Difference]: Start difference. First operand 32999 states and 54178 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24)