./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec13_product29.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 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:30:11,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:30:11,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:30:11,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:30:11,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:30:11,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:30:11,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:30:11,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:30:11,967 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:30:11,968 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:30:11,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:30:11,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:30:11,969 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:30:11,969 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:30:11,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:30:11,970 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:30:11,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:30:11,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:30:11,971 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:30:11,971 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:30:11,971 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:30:11,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:30:11,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:30:11,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:30:11,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:30:11,972 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:30:11,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:30:11,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:30:11,972 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 -> 63ce65fdf446745f64534f105010543d07f1d807cf17249eadefb49fdfafb832 [2025-03-16 18:30:12,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:30:12,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:30:12,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:30:12,217 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:30:12,217 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:30:12,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2025-03-16 18:30:13,341 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8218344/c6f6304ab5d44f1491a4aa7838b1f818/FLAG02325f4f5 [2025-03-16 18:30:13,675 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:30:13,676 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c [2025-03-16 18:30:13,688 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8218344/c6f6304ab5d44f1491a4aa7838b1f818/FLAG02325f4f5 [2025-03-16 18:30:13,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8218344/c6f6304ab5d44f1491a4aa7838b1f818 [2025-03-16 18:30:13,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:30:13,701 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:30:13,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:30:13,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:30:13,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:30:13,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:30:13" (1/1) ... [2025-03-16 18:30:13,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9efca37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:13, skipping insertion in model container [2025-03-16 18:30:13,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:30:13" (1/1) ... [2025-03-16 18:30:13,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:30:14,053 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2025-03-16 18:30:14,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:30:14,132 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:30:14,138 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [48] [2025-03-16 18:30:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [716] [2025-03-16 18:30:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [736] [2025-03-16 18:30:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [857] [2025-03-16 18:30:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [2398] [2025-03-16 18:30:14,139 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2488] [2025-03-16 18:30:14,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2497] [2025-03-16 18:30:14,140 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2589] [2025-03-16 18:30:14,141 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2940] [2025-03-16 18:30:14,141 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2975] [2025-03-16 18:30:14,204 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product29.cil.c[54440,54453] [2025-03-16 18:30:14,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:30:14,250 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:30:14,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14 WrapperNode [2025-03-16 18:30:14,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:30:14,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:30:14,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:30:14,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:30:14,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,313 INFO L138 Inliner]: procedures = 91, calls = 340, calls flagged for inlining = 28, calls inlined = 25, statements flattened = 858 [2025-03-16 18:30:14,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:30:14,313 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:30:14,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:30:14,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:30:14,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,349 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]. [2025-03-16 18:30:14,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,370 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:30:14,390 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:30:14,391 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:30:14,391 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:30:14,391 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (1/1) ... [2025-03-16 18:30:14,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:30:14,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:14,414 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) [2025-03-16 18:30:14,417 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 [2025-03-16 18:30:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-16 18:30:14,432 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-16 18:30:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:30:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-16 18:30:14,432 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-16 18:30:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:30:14,432 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:30:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2025-03-16 18:30:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2025-03-16 18:30:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:30:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:30:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:30:14,433 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:30:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-16 18:30:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-16 18:30:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:30:14,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:30:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:30:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-16 18:30:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:30:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:30:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:30:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:30:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:30:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:30:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:30:14,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:30:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:30:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:30:14,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:30:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:30:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:30:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:30:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:30:14,560 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:30:14,562 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:30:14,601 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1164: #res := ~retValue_acc~10; [2025-03-16 18:30:14,616 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L854: #res := ~retValue_acc~5; [2025-03-16 18:30:14,631 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L776: #res := ~retValue_acc~3; [2025-03-16 18:30:14,636 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L939: #res := ~retValue_acc~6; [2025-03-16 18:30:14,694 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2395: #res := ~retValue_acc~20; [2025-03-16 18:30:14,816 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1722-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~16#1; [2025-03-16 18:30:14,817 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1688: #res#1 := ~retValue_acc~15#1; [2025-03-16 18:30:14,885 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1820: #res := ~retValue_acc~19; [2025-03-16 18:30:14,896 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L815: #res := ~retValue_acc~4; [2025-03-16 18:30:15,040 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1649: #res := ~retValue_acc~14; [2025-03-16 18:30:15,048 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1155: #res := ~retValue_acc~9; [2025-03-16 18:30:15,093 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1204-1: isEmpty_#res#1 := isEmpty_~retValue_acc~11#1; [2025-03-16 18:30:15,231 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1778-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~17#1; [2025-03-16 18:30:15,231 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1112-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~7#1; [2025-03-16 18:30:15,231 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1806-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~18#1; [2025-03-16 18:30:15,263 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1284-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~12#1; [2025-03-16 18:30:15,263 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1297-1: isIdle_#res#1 := isIdle_~retValue_acc~13#1; [2025-03-16 18:30:15,310 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L402: #res := ~retValue_acc~1; [2025-03-16 18:30:15,354 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2972-1: valid_product_#res#1 := valid_product_~retValue_acc~24#1; [2025-03-16 18:30:15,355 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2937-1: main_#res#1 := main_~retValue_acc~22#1; [2025-03-16 18:30:15,363 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~0; [2025-03-16 18:30:15,367 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: #res := ~retValue_acc~2; [2025-03-16 18:30:15,472 INFO L? ?]: Removed 470 outVars from TransFormulas that were not future-live. [2025-03-16 18:30:15,472 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:30:15,493 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:30:15,496 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:30:15,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:30:15 BoogieIcfgContainer [2025-03-16 18:30:15,497 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:30:15,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:30:15,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:30:15,501 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:30:15,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:30:13" (1/3) ... [2025-03-16 18:30:15,502 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d770090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:30:15, skipping insertion in model container [2025-03-16 18:30:15,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:30:14" (2/3) ... [2025-03-16 18:30:15,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d770090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:30:15, skipping insertion in model container [2025-03-16 18:30:15,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:30:15" (3/3) ... [2025-03-16 18:30:15,503 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product29.cil.c [2025-03-16 18:30:15,513 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:30:15,517 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product29.cil.c that has 26 procedures, 588 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-16 18:30:15,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:30:15,610 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;@7ad1930f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:30:15,611 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:30:15,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 461 states have (on average 1.704989154013015) internal successors, (786), 479 states have internal predecessors, (786), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:30:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-16 18:30:15,642 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:15,643 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:15,643 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:15,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:15,647 INFO L85 PathProgramCache]: Analyzing trace with hash -217623325, now seen corresponding path program 1 times [2025-03-16 18:30:15,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:15,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098747086] [2025-03-16 18:30:15,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:15,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-16 18:30:15,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-16 18:30:15,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:15,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:30:16,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:16,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098747086] [2025-03-16 18:30:16,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098747086] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:16,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453524443] [2025-03-16 18:30:16,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:16,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:16,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:16,125 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) [2025-03-16 18:30:16,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:30:16,255 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-16 18:30:16,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-16 18:30:16,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:16,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:16,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:30:16,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 18:30:16,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:16,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453524443] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:16,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:16,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:30:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810800133] [2025-03-16 18:30:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:16,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:16,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:16,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:30:16,504 INFO L87 Difference]: Start difference. First operand has 588 states, 461 states have (on average 1.704989154013015) internal successors, (786), 479 states have internal predecessors, (786), 100 states have call successors, (100), 25 states have call predecessors, (100), 25 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:16,638 INFO L93 Difference]: Finished difference Result 1179 states and 1992 transitions. [2025-03-16 18:30:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:16,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 109 [2025-03-16 18:30:16,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:16,653 INFO L225 Difference]: With dead ends: 1179 [2025-03-16 18:30:16,654 INFO L226 Difference]: Without dead ends: 588 [2025-03-16 18:30:16,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:16,667 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 17 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:16,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2887 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:16,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2025-03-16 18:30:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2025-03-16 18:30:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 463 states have (on average 1.695464362850972) internal successors, (785), 479 states have internal predecessors, (785), 100 states have call successors, (100), 26 states have call predecessors, (100), 24 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:30:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 982 transitions. [2025-03-16 18:30:16,747 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 982 transitions. Word has length 109 [2025-03-16 18:30:16,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:16,747 INFO L471 AbstractCegarLoop]: Abstraction has 588 states and 982 transitions. [2025-03-16 18:30:16,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 982 transitions. [2025-03-16 18:30:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-16 18:30:16,754 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:16,754 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:16,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 18:30:16,955 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 [2025-03-16 18:30:16,955 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:16,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1810412255, now seen corresponding path program 1 times [2025-03-16 18:30:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:16,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103545154] [2025-03-16 18:30:16,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:16,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:16,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:30:16,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:30:16,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:16,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:17,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103545154] [2025-03-16 18:30:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103545154] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281340121] [2025-03-16 18:30:17,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:17,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:17,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:17,220 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) [2025-03-16 18:30:17,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:30:17,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:30:17,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:30:17,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:17,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:17,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:30:17,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:17,557 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281340121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:17,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-16 18:30:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981755441] [2025-03-16 18:30:17,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:17,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:17,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:17,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:17,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:30:17,565 INFO L87 Difference]: Start difference. First operand 588 states and 982 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:17,797 INFO L93 Difference]: Finished difference Result 1233 states and 2072 transitions. [2025-03-16 18:30:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:17,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2025-03-16 18:30:17,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:17,805 INFO L225 Difference]: With dead ends: 1233 [2025-03-16 18:30:17,805 INFO L226 Difference]: Without dead ends: 651 [2025-03-16 18:30:17,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:30:17,809 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 122 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2752 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:17,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2752 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:30:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2025-03-16 18:30:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 633. [2025-03-16 18:30:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 507 states have (on average 1.7140039447731756) internal successors, (869), 523 states have internal predecessors, (869), 100 states have call successors, (100), 27 states have call predecessors, (100), 25 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:30:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1066 transitions. [2025-03-16 18:30:17,844 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1066 transitions. Word has length 111 [2025-03-16 18:30:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:17,844 INFO L471 AbstractCegarLoop]: Abstraction has 633 states and 1066 transitions. [2025-03-16 18:30:17,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1066 transitions. [2025-03-16 18:30:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-16 18:30:17,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:17,850 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:17,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:18,050 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 [2025-03-16 18:30:18,051 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:18,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1288884615, now seen corresponding path program 1 times [2025-03-16 18:30:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268205487] [2025-03-16 18:30:18,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:18,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-16 18:30:18,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-16 18:30:18,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:18,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:18,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268205487] [2025-03-16 18:30:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268205487] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151677965] [2025-03-16 18:30:18,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:18,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:18,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:18,282 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) [2025-03-16 18:30:18,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:30:18,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-16 18:30:18,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-16 18:30:18,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:18,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:18,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:30:18,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:18,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:18,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151677965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:18,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:18,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-16 18:30:18,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071837025] [2025-03-16 18:30:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:18,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:18,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:18,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:30:18,601 INFO L87 Difference]: Start difference. First operand 633 states and 1066 transitions. Second operand has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:18,732 INFO L93 Difference]: Finished difference Result 1285 states and 2163 transitions. [2025-03-16 18:30:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:30:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2025-03-16 18:30:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:18,739 INFO L225 Difference]: With dead ends: 1285 [2025-03-16 18:30:18,739 INFO L226 Difference]: Without dead ends: 658 [2025-03-16 18:30:18,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:30:18,743 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 89 mSDsluCounter, 4686 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:18,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5642 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2025-03-16 18:30:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 646. [2025-03-16 18:30:18,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 517 states have (on average 1.7098646034816247) internal successors, (884), 535 states have internal predecessors, (884), 101 states have call successors, (101), 27 states have call predecessors, (101), 27 states have return successors, (102), 96 states have call predecessors, (102), 98 states have call successors, (102) [2025-03-16 18:30:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 1087 transitions. [2025-03-16 18:30:18,806 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 1087 transitions. Word has length 113 [2025-03-16 18:30:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:18,806 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 1087 transitions. [2025-03-16 18:30:18,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 1087 transitions. [2025-03-16 18:30:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 18:30:18,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:18,810 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:18,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:19,010 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 [2025-03-16 18:30:19,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:19,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash 139048727, now seen corresponding path program 1 times [2025-03-16 18:30:19,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:19,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518754999] [2025-03-16 18:30:19,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:19,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:19,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:30:19,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:30:19,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:19,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:30:19,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518754999] [2025-03-16 18:30:19,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518754999] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:19,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050689628] [2025-03-16 18:30:19,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:19,147 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) [2025-03-16 18:30:19,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:30:19,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:30:19,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:30:19,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:19,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:19,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:30:19,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:30:19,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:19,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050689628] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:19,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:19,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:30:19,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301067595] [2025-03-16 18:30:19,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:19,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:19,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:19,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:19,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:30:19,386 INFO L87 Difference]: Start difference. First operand 646 states and 1087 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:19,452 INFO L93 Difference]: Finished difference Result 1299 states and 2184 transitions. [2025-03-16 18:30:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:19,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2025-03-16 18:30:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:19,456 INFO L225 Difference]: With dead ends: 1299 [2025-03-16 18:30:19,456 INFO L226 Difference]: Without dead ends: 657 [2025-03-16 18:30:19,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:19,460 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 12 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:19,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2859 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2025-03-16 18:30:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 655. [2025-03-16 18:30:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.700952380952381) internal successors, (893), 543 states have internal predecessors, (893), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-03-16 18:30:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1095 transitions. [2025-03-16 18:30:19,482 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1095 transitions. Word has length 114 [2025-03-16 18:30:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:19,482 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1095 transitions. [2025-03-16 18:30:19,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1095 transitions. [2025-03-16 18:30:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 18:30:19,485 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:19,485 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:19,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 18:30:19,685 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 [2025-03-16 18:30:19,686 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:19,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash 753290265, now seen corresponding path program 1 times [2025-03-16 18:30:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064442353] [2025-03-16 18:30:19,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:19,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:30:19,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:30:19,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:19,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:19,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064442353] [2025-03-16 18:30:19,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064442353] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:19,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45916224] [2025-03-16 18:30:19,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:19,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:19,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:19,836 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) [2025-03-16 18:30:19,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 18:30:19,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:30:20,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:30:20,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:20,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:20,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:30:20,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:20,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45916224] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:20,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-16 18:30:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784874105] [2025-03-16 18:30:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:20,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:20,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:20,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:20,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:30:20,118 INFO L87 Difference]: Start difference. First operand 655 states and 1095 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:20,219 INFO L93 Difference]: Finished difference Result 1314 states and 2197 transitions. [2025-03-16 18:30:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:30:20,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2025-03-16 18:30:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:20,226 INFO L225 Difference]: With dead ends: 1314 [2025-03-16 18:30:20,226 INFO L226 Difference]: Without dead ends: 678 [2025-03-16 18:30:20,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:30:20,229 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 100 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:20,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5626 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2025-03-16 18:30:20,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 655. [2025-03-16 18:30:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.700952380952381) internal successors, (893), 543 states have internal predecessors, (893), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-03-16 18:30:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1095 transitions. [2025-03-16 18:30:20,282 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1095 transitions. Word has length 114 [2025-03-16 18:30:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:20,282 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1095 transitions. [2025-03-16 18:30:20,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1095 transitions. [2025-03-16 18:30:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:30:20,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:20,287 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:20,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:20,491 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 [2025-03-16 18:30:20,491 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:20,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2087542391, now seen corresponding path program 1 times [2025-03-16 18:30:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:20,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720106937] [2025-03-16 18:30:20,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:20,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:20,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:30:20,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:30:20,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:20,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:20,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720106937] [2025-03-16 18:30:20,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720106937] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378646118] [2025-03-16 18:30:20,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:20,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:20,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:20,620 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) [2025-03-16 18:30:20,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 18:30:20,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:30:20,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:30:20,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:20,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:20,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:30:20,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:20,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:20,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378646118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:20,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:20,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-16 18:30:20,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015067630] [2025-03-16 18:30:20,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:20,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:20,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:20,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:30:20,884 INFO L87 Difference]: Start difference. First operand 655 states and 1095 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:20,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:20,979 INFO L93 Difference]: Finished difference Result 1314 states and 2197 transitions. [2025-03-16 18:30:20,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:30:20,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2025-03-16 18:30:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:20,983 INFO L225 Difference]: With dead ends: 1314 [2025-03-16 18:30:20,983 INFO L226 Difference]: Without dead ends: 678 [2025-03-16 18:30:20,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:30:20,987 INFO L435 NwaCegarLoop]: 955 mSDtfsCounter, 111 mSDsluCounter, 4659 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5614 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:20,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5614 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2025-03-16 18:30:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 655. [2025-03-16 18:30:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.700952380952381) internal successors, (893), 543 states have internal predecessors, (893), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-03-16 18:30:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1095 transitions. [2025-03-16 18:30:21,016 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1095 transitions. Word has length 115 [2025-03-16 18:30:21,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:21,017 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1095 transitions. [2025-03-16 18:30:21,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:21,017 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1095 transitions. [2025-03-16 18:30:21,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:30:21,020 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:21,021 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:21,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:21,221 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 [2025-03-16 18:30:21,222 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:21,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:21,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1460505472, now seen corresponding path program 1 times [2025-03-16 18:30:21,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:21,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486641690] [2025-03-16 18:30:21,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:21,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:21,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:30:21,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:30:21,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:21,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:21,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:21,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486641690] [2025-03-16 18:30:21,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486641690] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:21,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636947154] [2025-03-16 18:30:21,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:21,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:21,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:21,348 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) [2025-03-16 18:30:21,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 18:30:21,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:30:21,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:30:21,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:21,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:21,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:30:21,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:21,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:21,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636947154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:21,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:21,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:30:21,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266900100] [2025-03-16 18:30:21,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:21,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:30:21,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:21,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:30:21,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:30:21,634 INFO L87 Difference]: Start difference. First operand 655 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:21,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:21,768 INFO L93 Difference]: Finished difference Result 1317 states and 2201 transitions. [2025-03-16 18:30:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:30:21,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2025-03-16 18:30:21,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:21,772 INFO L225 Difference]: With dead ends: 1317 [2025-03-16 18:30:21,772 INFO L226 Difference]: Without dead ends: 681 [2025-03-16 18:30:21,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:30:21,775 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 95 mSDsluCounter, 5573 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6518 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:21,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6518 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-03-16 18:30:21,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 655. [2025-03-16 18:30:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.700952380952381) internal successors, (893), 543 states have internal predecessors, (893), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-03-16 18:30:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1095 transitions. [2025-03-16 18:30:21,795 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1095 transitions. Word has length 115 [2025-03-16 18:30:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:21,795 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1095 transitions. [2025-03-16 18:30:21,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1095 transitions. [2025-03-16 18:30:21,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 18:30:21,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:21,798 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:21,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:21,998 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 [2025-03-16 18:30:21,999 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:21,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:21,999 INFO L85 PathProgramCache]: Analyzing trace with hash -108624442, now seen corresponding path program 1 times [2025-03-16 18:30:21,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:21,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276618932] [2025-03-16 18:30:21,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:22,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:22,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 18:30:22,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 18:30:22,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:22,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276618932] [2025-03-16 18:30:22,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276618932] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868319101] [2025-03-16 18:30:22,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:22,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:22,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:22,123 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) [2025-03-16 18:30:22,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-16 18:30:22,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 18:30:22,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 18:30:22,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:22,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:22,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:30:22,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:22,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:22,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868319101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:22,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:22,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:30:22,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824965618] [2025-03-16 18:30:22,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:22,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:30:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:22,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:30:22,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:30:22,418 INFO L87 Difference]: Start difference. First operand 655 states and 1095 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:22,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:22,591 INFO L93 Difference]: Finished difference Result 1317 states and 2201 transitions. [2025-03-16 18:30:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:30:22,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2025-03-16 18:30:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:22,600 INFO L225 Difference]: With dead ends: 1317 [2025-03-16 18:30:22,600 INFO L226 Difference]: Without dead ends: 681 [2025-03-16 18:30:22,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:30:22,605 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 105 mSDsluCounter, 5561 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6506 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:22,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6506 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-03-16 18:30:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 655. [2025-03-16 18:30:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.700952380952381) internal successors, (893), 543 states have internal predecessors, (893), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-03-16 18:30:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1095 transitions. [2025-03-16 18:30:22,629 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1095 transitions. Word has length 116 [2025-03-16 18:30:22,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:22,629 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1095 transitions. [2025-03-16 18:30:22,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1095 transitions. [2025-03-16 18:30:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-16 18:30:22,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:22,632 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:22,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-16 18:30:22,836 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 [2025-03-16 18:30:22,836 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:22,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:22,837 INFO L85 PathProgramCache]: Analyzing trace with hash 572678336, now seen corresponding path program 1 times [2025-03-16 18:30:22,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:22,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647999052] [2025-03-16 18:30:22,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:22,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:22,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 18:30:22,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 18:30:22,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:22,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:30:22,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647999052] [2025-03-16 18:30:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647999052] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059615849] [2025-03-16 18:30:22,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:22,906 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) [2025-03-16 18:30:22,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-16 18:30:23,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 18:30:23,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 18:30:23,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:23,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:23,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:30:23,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:30:23,140 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:23,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059615849] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:23,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:23,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:30:23,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232433334] [2025-03-16 18:30:23,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:23,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:23,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:23,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:23,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:30:23,141 INFO L87 Difference]: Start difference. First operand 655 states and 1095 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:23,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:23,195 INFO L93 Difference]: Finished difference Result 1280 states and 2146 transitions. [2025-03-16 18:30:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:23,195 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2025-03-16 18:30:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:23,199 INFO L225 Difference]: With dead ends: 1280 [2025-03-16 18:30:23,199 INFO L226 Difference]: Without dead ends: 655 [2025-03-16 18:30:23,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:23,203 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 20 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:23,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2853 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2025-03-16 18:30:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2025-03-16 18:30:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.6914285714285715) internal successors, (888), 543 states have internal predecessors, (888), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 96 states have call predecessors, (101), 98 states have call successors, (101) [2025-03-16 18:30:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1090 transitions. [2025-03-16 18:30:23,220 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1090 transitions. Word has length 117 [2025-03-16 18:30:23,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:23,221 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1090 transitions. [2025-03-16 18:30:23,221 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1090 transitions. [2025-03-16 18:30:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-16 18:30:23,224 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:23,224 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:23,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:23,424 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 [2025-03-16 18:30:23,425 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:23,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:23,425 INFO L85 PathProgramCache]: Analyzing trace with hash 887607208, now seen corresponding path program 1 times [2025-03-16 18:30:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086140597] [2025-03-16 18:30:23,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:23,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:23,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-16 18:30:23,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-16 18:30:23,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:23,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:30:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086140597] [2025-03-16 18:30:23,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086140597] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263433280] [2025-03-16 18:30:23,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:23,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:23,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:23,492 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) [2025-03-16 18:30:23,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-16 18:30:23,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-16 18:30:23,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-16 18:30:23,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:23,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:23,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:30:23,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-16 18:30:23,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:23,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263433280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:23,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:23,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:30:23,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998073889] [2025-03-16 18:30:23,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:23,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:23,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:23,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:23,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:30:23,750 INFO L87 Difference]: Start difference. First operand 655 states and 1090 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:23,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:23,884 INFO L93 Difference]: Finished difference Result 1309 states and 2186 transitions. [2025-03-16 18:30:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:23,884 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2025-03-16 18:30:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:23,889 INFO L225 Difference]: With dead ends: 1309 [2025-03-16 18:30:23,889 INFO L226 Difference]: Without dead ends: 742 [2025-03-16 18:30:23,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:23,892 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 171 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:23,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2725 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:23,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2025-03-16 18:30:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 700. [2025-03-16 18:30:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 569 states have (on average 1.7082601054481548) internal successors, (972), 587 states have internal predecessors, (972), 101 states have call successors, (101), 29 states have call predecessors, (101), 29 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2025-03-16 18:30:23,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1173 transitions. [2025-03-16 18:30:23,913 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1173 transitions. Word has length 118 [2025-03-16 18:30:23,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:23,913 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 1173 transitions. [2025-03-16 18:30:23,913 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1173 transitions. [2025-03-16 18:30:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-16 18:30:23,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:23,916 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:23,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:24,117 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 [2025-03-16 18:30:24,117 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:24,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:24,117 INFO L85 PathProgramCache]: Analyzing trace with hash 989309340, now seen corresponding path program 1 times [2025-03-16 18:30:24,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:24,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418916697] [2025-03-16 18:30:24,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:24,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-16 18:30:24,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-16 18:30:24,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:24,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:30:24,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418916697] [2025-03-16 18:30:24,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418916697] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144255173] [2025-03-16 18:30:24,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:24,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:24,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:24,185 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) [2025-03-16 18:30:24,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-16 18:30:24,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-16 18:30:24,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-16 18:30:24,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:24,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:24,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 1389 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:30:24,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:30:24,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:24,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144255173] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:24,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:24,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-16 18:30:24,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030288066] [2025-03-16 18:30:24,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:24,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:24,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:24,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:30:24,443 INFO L87 Difference]: Start difference. First operand 700 states and 1173 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:24,530 INFO L93 Difference]: Finished difference Result 1302 states and 2173 transitions. [2025-03-16 18:30:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:30:24,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 119 [2025-03-16 18:30:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:24,536 INFO L225 Difference]: With dead ends: 1302 [2025-03-16 18:30:24,536 INFO L226 Difference]: Without dead ends: 735 [2025-03-16 18:30:24,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:30:24,539 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 89 mSDsluCounter, 4700 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:24,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5658 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2025-03-16 18:30:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 713. [2025-03-16 18:30:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 579 states have (on average 1.7046632124352332) internal successors, (987), 599 states have internal predecessors, (987), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-16 18:30:24,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1192 transitions. [2025-03-16 18:30:24,559 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1192 transitions. Word has length 119 [2025-03-16 18:30:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:24,559 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1192 transitions. [2025-03-16 18:30:24,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:24,560 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1192 transitions. [2025-03-16 18:30:24,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-16 18:30:24,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:24,563 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:24,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-16 18:30:24,763 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 [2025-03-16 18:30:24,764 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:24,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:24,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1114147681, now seen corresponding path program 1 times [2025-03-16 18:30:24,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:24,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309267933] [2025-03-16 18:30:24,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:24,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:24,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-16 18:30:24,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-16 18:30:24,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:24,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:30:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309267933] [2025-03-16 18:30:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309267933] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055290939] [2025-03-16 18:30:24,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:24,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:24,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:24,846 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) [2025-03-16 18:30:24,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-16 18:30:24,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-16 18:30:25,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-16 18:30:25,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:25,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:25,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:30:25,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-16 18:30:25,105 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:25,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055290939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:25,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:25,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:30:25,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679621185] [2025-03-16 18:30:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:25,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:25,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:25,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:25,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:30:25,107 INFO L87 Difference]: Start difference. First operand 713 states and 1192 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:25,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:25,150 INFO L93 Difference]: Finished difference Result 1356 states and 2269 transitions. [2025-03-16 18:30:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:30:25,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2025-03-16 18:30:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:25,155 INFO L225 Difference]: With dead ends: 1356 [2025-03-16 18:30:25,155 INFO L226 Difference]: Without dead ends: 713 [2025-03-16 18:30:25,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:30:25,159 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 2 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:25,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2862 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2025-03-16 18:30:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2025-03-16 18:30:25,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 579 states have (on average 1.6994818652849741) internal successors, (984), 599 states have internal predecessors, (984), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-16 18:30:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1189 transitions. [2025-03-16 18:30:25,184 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1189 transitions. Word has length 120 [2025-03-16 18:30:25,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:25,184 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1189 transitions. [2025-03-16 18:30:25,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1189 transitions. [2025-03-16 18:30:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-16 18:30:25,187 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:25,188 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:25,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:25,388 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 [2025-03-16 18:30:25,389 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:25,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -335147456, now seen corresponding path program 1 times [2025-03-16 18:30:25,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:25,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937849648] [2025-03-16 18:30:25,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:25,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:25,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-16 18:30:25,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-16 18:30:25,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:25,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 18:30:25,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:25,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937849648] [2025-03-16 18:30:25,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937849648] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:25,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107504052] [2025-03-16 18:30:25,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:25,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:25,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:25,458 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) [2025-03-16 18:30:25,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-16 18:30:25,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-16 18:30:25,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-16 18:30:25,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:25,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:25,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 18:30:25,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:30:25,722 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:25,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107504052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:25,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:25,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-16 18:30:25,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164342975] [2025-03-16 18:30:25,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:25,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:25,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:25,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:30:25,723 INFO L87 Difference]: Start difference. First operand 713 states and 1189 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:25,801 INFO L93 Difference]: Finished difference Result 1311 states and 2184 transitions. [2025-03-16 18:30:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:30:25,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2025-03-16 18:30:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:25,806 INFO L225 Difference]: With dead ends: 1311 [2025-03-16 18:30:25,806 INFO L226 Difference]: Without dead ends: 744 [2025-03-16 18:30:25,809 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:30:25,810 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 100 mSDsluCounter, 4667 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:25,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5620 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:25,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2025-03-16 18:30:25,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 713. [2025-03-16 18:30:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 579 states have (on average 1.6994818652849741) internal successors, (984), 599 states have internal predecessors, (984), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-16 18:30:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1189 transitions. [2025-03-16 18:30:25,833 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1189 transitions. Word has length 120 [2025-03-16 18:30:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:25,833 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1189 transitions. [2025-03-16 18:30:25,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1189 transitions. [2025-03-16 18:30:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-16 18:30:25,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:25,837 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:25,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:26,037 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 [2025-03-16 18:30:26,038 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:26,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:26,039 INFO L85 PathProgramCache]: Analyzing trace with hash -887328977, now seen corresponding path program 1 times [2025-03-16 18:30:26,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053693973] [2025-03-16 18:30:26,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:26,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-16 18:30:26,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-16 18:30:26,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:26,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 18:30:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053693973] [2025-03-16 18:30:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053693973] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160457446] [2025-03-16 18:30:26,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:26,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:26,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:26,097 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) [2025-03-16 18:30:26,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-16 18:30:26,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-16 18:30:26,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-16 18:30:26,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:26,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:26,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 1386 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:30:26,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:30:26,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:26,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160457446] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:26,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:26,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:30:26,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452892400] [2025-03-16 18:30:26,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:26,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:30:26,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:26,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:30:26,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:30:26,396 INFO L87 Difference]: Start difference. First operand 713 states and 1189 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:26,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:26,511 INFO L93 Difference]: Finished difference Result 1314 states and 2187 transitions. [2025-03-16 18:30:26,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:30:26,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2025-03-16 18:30:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:26,515 INFO L225 Difference]: With dead ends: 1314 [2025-03-16 18:30:26,516 INFO L226 Difference]: Without dead ends: 747 [2025-03-16 18:30:26,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:30:26,518 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 96 mSDsluCounter, 5567 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6510 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:26,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6510 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2025-03-16 18:30:26,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 713. [2025-03-16 18:30:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 579 states have (on average 1.6994818652849741) internal successors, (984), 599 states have internal predecessors, (984), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-16 18:30:26,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1189 transitions. [2025-03-16 18:30:26,537 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1189 transitions. Word has length 120 [2025-03-16 18:30:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:26,537 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1189 transitions. [2025-03-16 18:30:26,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1189 transitions. [2025-03-16 18:30:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-16 18:30:26,540 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:26,540 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:26,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:26,740 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 [2025-03-16 18:30:26,740 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:26,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1880812605, now seen corresponding path program 1 times [2025-03-16 18:30:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:26,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130306108] [2025-03-16 18:30:26,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:26,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:26,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:30:26,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:30:26,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:26,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 18:30:26,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130306108] [2025-03-16 18:30:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130306108] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257935375] [2025-03-16 18:30:26,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:26,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:26,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:26,792 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) [2025-03-16 18:30:26,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-16 18:30:26,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:30:27,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:30:27,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:27,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:27,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 1387 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:30:27,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 18:30:27,066 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:27,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257935375] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:27,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:27,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-16 18:30:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546836208] [2025-03-16 18:30:27,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:27,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:30:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:27,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:30:27,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:30:27,067 INFO L87 Difference]: Start difference. First operand 713 states and 1189 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:27,189 INFO L93 Difference]: Finished difference Result 1305 states and 2173 transitions. [2025-03-16 18:30:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:30:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 121 [2025-03-16 18:30:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:27,196 INFO L225 Difference]: With dead ends: 1305 [2025-03-16 18:30:27,196 INFO L226 Difference]: Without dead ends: 738 [2025-03-16 18:30:27,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:30:27,200 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 106 mSDsluCounter, 5555 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:27,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6498 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:27,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2025-03-16 18:30:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 713. [2025-03-16 18:30:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 579 states have (on average 1.6994818652849741) internal successors, (984), 599 states have internal predecessors, (984), 102 states have call successors, (102), 29 states have call predecessors, (102), 31 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-16 18:30:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1189 transitions. [2025-03-16 18:30:27,220 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1189 transitions. Word has length 121 [2025-03-16 18:30:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:27,220 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1189 transitions. [2025-03-16 18:30:27,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1189 transitions. [2025-03-16 18:30:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-16 18:30:27,223 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:27,223 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] [2025-03-16 18:30:27,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:27,423 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 [2025-03-16 18:30:27,424 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:27,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash 334210589, now seen corresponding path program 1 times [2025-03-16 18:30:27,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:27,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721570945] [2025-03-16 18:30:27,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:27,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:27,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:27,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:27,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:27,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:30:27,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721570945] [2025-03-16 18:30:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721570945] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619787640] [2025-03-16 18:30:27,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:27,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:27,488 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) [2025-03-16 18:30:27,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-16 18:30:27,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:27,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:27,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:27,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:27,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:30:27,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:30:27,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619787640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:27,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:27,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-16 18:30:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554961542] [2025-03-16 18:30:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:27,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:27,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:27,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:27,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:30:27,729 INFO L87 Difference]: Start difference. First operand 713 states and 1189 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:27,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:27,775 INFO L93 Difference]: Finished difference Result 1296 states and 2172 transitions. [2025-03-16 18:30:27,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:27,776 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2025-03-16 18:30:27,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:27,779 INFO L225 Difference]: With dead ends: 1296 [2025-03-16 18:30:27,779 INFO L226 Difference]: Without dead ends: 733 [2025-03-16 18:30:27,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:27,782 INFO L435 NwaCegarLoop]: 985 mSDtfsCounter, 53 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:27,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 2896 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:27,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2025-03-16 18:30:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2025-03-16 18:30:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 598 states have (on average 1.7006688963210703) internal successors, (1017), 618 states have internal predecessors, (1017), 102 states have call successors, (102), 30 states have call predecessors, (102), 32 states have return successors, (103), 97 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-16 18:30:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1222 transitions. [2025-03-16 18:30:27,802 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1222 transitions. Word has length 122 [2025-03-16 18:30:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:27,803 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1222 transitions. [2025-03-16 18:30:27,803 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, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1222 transitions. [2025-03-16 18:30:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-16 18:30:27,806 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:27,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:27,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:28,007 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 [2025-03-16 18:30:28,007 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:28,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:28,007 INFO L85 PathProgramCache]: Analyzing trace with hash 266886206, now seen corresponding path program 1 times [2025-03-16 18:30:28,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:28,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336342297] [2025-03-16 18:30:28,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:28,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:28,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:28,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:28,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:28,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:30:28,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:28,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336342297] [2025-03-16 18:30:28,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336342297] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:28,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669787706] [2025-03-16 18:30:28,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:28,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:28,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:28,063 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) [2025-03-16 18:30:28,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-16 18:30:28,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:28,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:28,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:28,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:28,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1388 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:30:28,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-16 18:30:28,321 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669787706] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:28,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-16 18:30:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264581551] [2025-03-16 18:30:28,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:28,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:30:28,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:28,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:30:28,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:28,322 INFO L87 Difference]: Start difference. First operand 733 states and 1222 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:29,076 INFO L93 Difference]: Finished difference Result 2420 states and 4116 transitions. [2025-03-16 18:30:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:30:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2025-03-16 18:30:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:29,087 INFO L225 Difference]: With dead ends: 2420 [2025-03-16 18:30:29,087 INFO L226 Difference]: Without dead ends: 1837 [2025-03-16 18:30:29,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:30:29,091 INFO L435 NwaCegarLoop]: 1046 mSDtfsCounter, 1772 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1772 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:29,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1772 Valid, 3458 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-16 18:30:29,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1837 states. [2025-03-16 18:30:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1837 to 1823. [2025-03-16 18:30:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1473 states have (on average 1.6741344195519348) internal successors, (2466), 1521 states have internal predecessors, (2466), 271 states have call successors, (271), 78 states have call predecessors, (271), 78 states have return successors, (319), 262 states have call predecessors, (319), 266 states have call successors, (319) [2025-03-16 18:30:29,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 3056 transitions. [2025-03-16 18:30:29,158 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 3056 transitions. Word has length 122 [2025-03-16 18:30:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:29,159 INFO L471 AbstractCegarLoop]: Abstraction has 1823 states and 3056 transitions. [2025-03-16 18:30:29,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 3056 transitions. [2025-03-16 18:30:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-16 18:30:29,165 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:29,165 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] [2025-03-16 18:30:29,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-16 18:30:29,365 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 [2025-03-16 18:30:29,365 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:29,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 184356093, now seen corresponding path program 1 times [2025-03-16 18:30:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:29,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494941590] [2025-03-16 18:30:29,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:29,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:29,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:29,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:29,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:29,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:30:29,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494941590] [2025-03-16 18:30:29,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494941590] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588316655] [2025-03-16 18:30:29,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:29,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:29,445 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) [2025-03-16 18:30:29,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-16 18:30:29,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:29,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:29,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:29,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:29,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 1385 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-16 18:30:29,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:30:29,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588316655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:29,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-16 18:30:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54839404] [2025-03-16 18:30:29,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:29,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:29,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:29,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:29,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:29,658 INFO L87 Difference]: Start difference. First operand 1823 states and 3056 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:29,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:29,727 INFO L93 Difference]: Finished difference Result 3627 states and 6094 transitions. [2025-03-16 18:30:29,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:29,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2025-03-16 18:30:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:29,735 INFO L225 Difference]: With dead ends: 3627 [2025-03-16 18:30:29,735 INFO L226 Difference]: Without dead ends: 1788 [2025-03-16 18:30:29,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:30:29,743 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 7 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:29,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2854 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2025-03-16 18:30:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1788. [2025-03-16 18:30:29,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1441 states have (on average 1.6648160999306036) internal successors, (2399), 1487 states have internal predecessors, (2399), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2025-03-16 18:30:29,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2985 transitions. [2025-03-16 18:30:29,792 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2985 transitions. Word has length 122 [2025-03-16 18:30:29,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:29,792 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 2985 transitions. [2025-03-16 18:30:29,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2985 transitions. [2025-03-16 18:30:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-16 18:30:29,796 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:29,796 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:30:29,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:29,996 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 [2025-03-16 18:30:29,997 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:29,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash -696250470, now seen corresponding path program 1 times [2025-03-16 18:30:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626015106] [2025-03-16 18:30:29,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:29,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:30,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:30,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:30,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:30,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:30,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626015106] [2025-03-16 18:30:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626015106] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359013960] [2025-03-16 18:30:30,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:30,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:30,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:30,096 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) [2025-03-16 18:30:30,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-16 18:30:30,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-16 18:30:30,302 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-16 18:30:30,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:30,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:30,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 1382 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:30:30,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:30,355 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:30,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359013960] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:30,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-16 18:30:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377008577] [2025-03-16 18:30:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:30,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:30:30,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:30,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:30:30,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:30:30,356 INFO L87 Difference]: Start difference. First operand 1788 states and 2985 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:30,505 INFO L93 Difference]: Finished difference Result 3592 states and 5991 transitions. [2025-03-16 18:30:30,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 18:30:30,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 122 [2025-03-16 18:30:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:30,513 INFO L225 Difference]: With dead ends: 3592 [2025-03-16 18:30:30,513 INFO L226 Difference]: Without dead ends: 1830 [2025-03-16 18:30:30,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:30:30,519 INFO L435 NwaCegarLoop]: 942 mSDtfsCounter, 111 mSDsluCounter, 5533 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:30,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6475 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2025-03-16 18:30:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1788. [2025-03-16 18:30:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1788 states, 1441 states have (on average 1.6641221374045803) internal successors, (2398), 1487 states have internal predecessors, (2398), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2025-03-16 18:30:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2984 transitions. [2025-03-16 18:30:30,567 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2984 transitions. Word has length 122 [2025-03-16 18:30:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:30,567 INFO L471 AbstractCegarLoop]: Abstraction has 1788 states and 2984 transitions. [2025-03-16 18:30:30,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2984 transitions. [2025-03-16 18:30:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-16 18:30:30,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:30,571 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:30,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-16 18:30:30,772 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 [2025-03-16 18:30:30,772 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:30,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2090130996, now seen corresponding path program 1 times [2025-03-16 18:30:30,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:30,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932913369] [2025-03-16 18:30:30,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:30,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:30,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:30:30,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:30:30,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:30,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:30,860 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932913369] [2025-03-16 18:30:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932913369] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:30:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948273453] [2025-03-16 18:30:30,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:30:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:30:30,863 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) [2025-03-16 18:30:30,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-16 18:30:30,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:30:31,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:30:31,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:31,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:31,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-16 18:30:31,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:30:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:30:31,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:30:31,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948273453] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:31,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:30:31,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-16 18:30:31,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357283514] [2025-03-16 18:30:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:31,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:31,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:31,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:31,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:31,104 INFO L87 Difference]: Start difference. First operand 1788 states and 2984 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:31,182 INFO L93 Difference]: Finished difference Result 3595 states and 5994 transitions. [2025-03-16 18:30:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:30:31,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 123 [2025-03-16 18:30:31,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:31,190 INFO L225 Difference]: With dead ends: 3595 [2025-03-16 18:30:31,190 INFO L226 Difference]: Without dead ends: 1820 [2025-03-16 18:30:31,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:30:31,199 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 122 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 5645 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:31,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 5645 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2025-03-16 18:30:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1781. [2025-03-16 18:30:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1434 states have (on average 1.6610878661087867) internal successors, (2382), 1480 states have internal predecessors, (2382), 270 states have call successors, (270), 78 states have call predecessors, (270), 76 states have return successors, (316), 261 states have call predecessors, (316), 265 states have call successors, (316) [2025-03-16 18:30:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2968 transitions. [2025-03-16 18:30:31,248 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2968 transitions. Word has length 123 [2025-03-16 18:30:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:31,248 INFO L471 AbstractCegarLoop]: Abstraction has 1781 states and 2968 transitions. [2025-03-16 18:30:31,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2968 transitions. [2025-03-16 18:30:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-16 18:30:31,250 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:31,251 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:30:31,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-16 18:30:31,451 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 [2025-03-16 18:30:31,451 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:31,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash -861528181, now seen corresponding path program 1 times [2025-03-16 18:30:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:31,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194190823] [2025-03-16 18:30:31,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:31,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-16 18:30:31,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-16 18:30:31,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:31,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-16 18:30:31,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194190823] [2025-03-16 18:30:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194190823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:31,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:31,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:30:31,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124944203] [2025-03-16 18:30:31,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:31,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:31,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:31,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:31,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:31,540 INFO L87 Difference]: Start difference. First operand 1781 states and 2968 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:31,592 INFO L93 Difference]: Finished difference Result 3521 states and 5883 transitions. [2025-03-16 18:30:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:30:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2025-03-16 18:30:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:31,599 INFO L225 Difference]: With dead ends: 3521 [2025-03-16 18:30:31,599 INFO L226 Difference]: Without dead ends: 1753 [2025-03-16 18:30:31,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:30:31,605 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 8 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:31,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2853 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2025-03-16 18:30:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1753. [2025-03-16 18:30:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1409 states have (on average 1.6586231369765791) internal successors, (2337), 1453 states have internal predecessors, (2337), 269 states have call successors, (269), 78 states have call predecessors, (269), 74 states have return successors, (313), 260 states have call predecessors, (313), 264 states have call successors, (313) [2025-03-16 18:30:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2919 transitions. [2025-03-16 18:30:31,647 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2919 transitions. Word has length 124 [2025-03-16 18:30:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:31,647 INFO L471 AbstractCegarLoop]: Abstraction has 1753 states and 2919 transitions. [2025-03-16 18:30:31,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:30:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2919 transitions. [2025-03-16 18:30:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-16 18:30:31,650 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:31,651 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:31,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:30:31,651 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:31,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash -227383904, now seen corresponding path program 1 times [2025-03-16 18:30:31,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:31,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327810874] [2025-03-16 18:30:31,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:31,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:31,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-16 18:30:31,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-16 18:30:31,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:31,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:30:31,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:31,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327810874] [2025-03-16 18:30:31,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327810874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:31,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:31,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:30:31,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380509037] [2025-03-16 18:30:31,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:31,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:31,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:31,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:31,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:31,740 INFO L87 Difference]: Start difference. First operand 1753 states and 2919 transitions. Second operand has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:31,811 INFO L93 Difference]: Finished difference Result 3466 states and 5785 transitions. [2025-03-16 18:30:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:30:31,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2025-03-16 18:30:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:31,819 INFO L225 Difference]: With dead ends: 3466 [2025-03-16 18:30:31,820 INFO L226 Difference]: Without dead ends: 1766 [2025-03-16 18:30:31,824 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 [2025-03-16 18:30:31,826 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 126 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5587 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:31,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5587 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:30:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2025-03-16 18:30:31,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1739. [2025-03-16 18:30:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1395 states have (on average 1.6551971326164874) internal successors, (2309), 1439 states have internal predecessors, (2309), 269 states have call successors, (269), 78 states have call predecessors, (269), 74 states have return successors, (313), 260 states have call predecessors, (313), 264 states have call successors, (313) [2025-03-16 18:30:31,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2891 transitions. [2025-03-16 18:30:31,862 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2891 transitions. Word has length 124 [2025-03-16 18:30:31,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:31,862 INFO L471 AbstractCegarLoop]: Abstraction has 1739 states and 2891 transitions. [2025-03-16 18:30:31,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:30:31,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2891 transitions. [2025-03-16 18:30:31,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-16 18:30:31,865 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:31,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:31,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 18:30:31,865 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:31,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:31,865 INFO L85 PathProgramCache]: Analyzing trace with hash 15415499, now seen corresponding path program 1 times [2025-03-16 18:30:31,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:31,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688147555] [2025-03-16 18:30:31,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:31,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:31,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-16 18:30:31,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-16 18:30:31,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:31,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:30:31,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:31,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688147555] [2025-03-16 18:30:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688147555] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:31,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:31,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:30:31,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498760557] [2025-03-16 18:30:31,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:31,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:31,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:31,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:31,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:31,948 INFO L87 Difference]: Start difference. First operand 1739 states and 2891 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:32,516 INFO L93 Difference]: Finished difference Result 5023 states and 8579 transitions. [2025-03-16 18:30:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:30:32,516 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 125 [2025-03-16 18:30:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:32,529 INFO L225 Difference]: With dead ends: 5023 [2025-03-16 18:30:32,529 INFO L226 Difference]: Without dead ends: 3350 [2025-03-16 18:30:32,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:32,536 INFO L435 NwaCegarLoop]: 1866 mSDtfsCounter, 1848 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:32,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 3330 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 18:30:32,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2025-03-16 18:30:32,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 3344. [2025-03-16 18:30:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2684 states have (on average 1.6464232488822652) internal successors, (4419), 2770 states have internal predecessors, (4419), 516 states have call successors, (516), 150 states have call predecessors, (516), 143 states have return successors, (658), 501 states have call predecessors, (658), 508 states have call successors, (658) [2025-03-16 18:30:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 5593 transitions. [2025-03-16 18:30:32,614 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 5593 transitions. Word has length 125 [2025-03-16 18:30:32,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:32,615 INFO L471 AbstractCegarLoop]: Abstraction has 3344 states and 5593 transitions. [2025-03-16 18:30:32,615 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 5593 transitions. [2025-03-16 18:30:32,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-16 18:30:32,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:32,617 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:32,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 18:30:32,618 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:32,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1941784491, now seen corresponding path program 1 times [2025-03-16 18:30:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015072666] [2025-03-16 18:30:32,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:32,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:32,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-16 18:30:32,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-16 18:30:32,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:32,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:30:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015072666] [2025-03-16 18:30:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015072666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:30:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763508151] [2025-03-16 18:30:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:32,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:32,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:32,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:32,692 INFO L87 Difference]: Start difference. First operand 3344 states and 5593 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:33,308 INFO L93 Difference]: Finished difference Result 9853 states and 16923 transitions. [2025-03-16 18:30:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:30:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2025-03-16 18:30:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:33,333 INFO L225 Difference]: With dead ends: 9853 [2025-03-16 18:30:33,333 INFO L226 Difference]: Without dead ends: 6575 [2025-03-16 18:30:33,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:33,347 INFO L435 NwaCegarLoop]: 1875 mSDtfsCounter, 1857 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:33,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 3346 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 18:30:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2025-03-16 18:30:33,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6567. [2025-03-16 18:30:33,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6567 states, 5272 states have (on average 1.6377086494688922) internal successors, (8634), 5442 states have internal predecessors, (8634), 1013 states have call successors, (1013), 294 states have call predecessors, (1013), 281 states have return successors, (1423), 986 states have call predecessors, (1423), 999 states have call successors, (1423) [2025-03-16 18:30:33,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 11070 transitions. [2025-03-16 18:30:33,520 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 11070 transitions. Word has length 126 [2025-03-16 18:30:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:33,521 INFO L471 AbstractCegarLoop]: Abstraction has 6567 states and 11070 transitions. [2025-03-16 18:30:33,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:33,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 11070 transitions. [2025-03-16 18:30:33,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-16 18:30:33,523 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:33,523 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:33,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-16 18:30:33,524 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:33,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -2071126778, now seen corresponding path program 1 times [2025-03-16 18:30:33,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:33,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071435280] [2025-03-16 18:30:33,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:33,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:33,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 18:30:33,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 18:30:33,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:33,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:30:33,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:33,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071435280] [2025-03-16 18:30:33,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071435280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:33,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:33,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:30:33,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213690176] [2025-03-16 18:30:33,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:33,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:33,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:33,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:33,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:33,628 INFO L87 Difference]: Start difference. First operand 6567 states and 11070 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:34,424 INFO L93 Difference]: Finished difference Result 19537 states and 34109 transitions. [2025-03-16 18:30:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:30:34,424 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 127 [2025-03-16 18:30:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:34,483 INFO L225 Difference]: With dead ends: 19537 [2025-03-16 18:30:34,483 INFO L226 Difference]: Without dead ends: 13036 [2025-03-16 18:30:34,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:34,518 INFO L435 NwaCegarLoop]: 1884 mSDtfsCounter, 1866 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 3362 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:34,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1866 Valid, 3362 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 18:30:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13036 states. [2025-03-16 18:30:34,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13036 to 13028. [2025-03-16 18:30:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13028 states, 10460 states have (on average 1.628393881453155) internal successors, (17033), 10798 states have internal predecessors, (17033), 2010 states have call successors, (2010), 582 states have call predecessors, (2010), 557 states have return successors, (3208), 1959 states have call predecessors, (3208), 1984 states have call successors, (3208) [2025-03-16 18:30:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13028 states to 13028 states and 22251 transitions. [2025-03-16 18:30:35,022 INFO L78 Accepts]: Start accepts. Automaton has 13028 states and 22251 transitions. Word has length 127 [2025-03-16 18:30:35,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:35,022 INFO L471 AbstractCegarLoop]: Abstraction has 13028 states and 22251 transitions. [2025-03-16 18:30:35,023 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 13028 states and 22251 transitions. [2025-03-16 18:30:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-16 18:30:35,026 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:35,026 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:35,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-16 18:30:35,026 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:35,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:35,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1371455120, now seen corresponding path program 1 times [2025-03-16 18:30:35,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:35,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336211496] [2025-03-16 18:30:35,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:35,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-16 18:30:35,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-16 18:30:35,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:35,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:30:35,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:35,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336211496] [2025-03-16 18:30:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336211496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:35,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:35,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:30:35,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972768885] [2025-03-16 18:30:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:35,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:35,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:35,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:35,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:35,122 INFO L87 Difference]: Start difference. First operand 13028 states and 22251 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:36,433 INFO L93 Difference]: Finished difference Result 38935 states and 69935 transitions. [2025-03-16 18:30:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:30:36,434 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2025-03-16 18:30:36,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:36,541 INFO L225 Difference]: With dead ends: 38935 [2025-03-16 18:30:36,542 INFO L226 Difference]: Without dead ends: 25973 [2025-03-16 18:30:36,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:36,634 INFO L435 NwaCegarLoop]: 1893 mSDtfsCounter, 1875 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:36,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 3378 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 18:30:36,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25973 states. [2025-03-16 18:30:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25973 to 25969. [2025-03-16 18:30:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25969 states, 20852 states have (on average 1.618645693458661) internal successors, (33752), 21526 states have internal predecessors, (33752), 4007 states have call successors, (4007), 1158 states have call predecessors, (4007), 1109 states have return successors, (7717), 3908 states have call predecessors, (7717), 3957 states have call successors, (7717) [2025-03-16 18:30:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25969 states to 25969 states and 45476 transitions. [2025-03-16 18:30:37,788 INFO L78 Accepts]: Start accepts. Automaton has 25969 states and 45476 transitions. Word has length 128 [2025-03-16 18:30:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:37,788 INFO L471 AbstractCegarLoop]: Abstraction has 25969 states and 45476 transitions. [2025-03-16 18:30:37,789 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 25969 states and 45476 transitions. [2025-03-16 18:30:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-16 18:30:37,792 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:37,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:37,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-16 18:30:37,794 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:37,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash -742154943, now seen corresponding path program 1 times [2025-03-16 18:30:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88200870] [2025-03-16 18:30:37,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:37,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-16 18:30:37,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-16 18:30:37,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:37,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:30:37,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:37,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88200870] [2025-03-16 18:30:37,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88200870] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:37,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:37,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:30:37,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466092588] [2025-03-16 18:30:37,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:37,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:37,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:37,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:37,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:37,885 INFO L87 Difference]: Start difference. First operand 25969 states and 45476 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:40,798 INFO L93 Difference]: Finished difference Result 77773 states and 147605 transitions. [2025-03-16 18:30:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:30:40,799 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 129 [2025-03-16 18:30:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:41,045 INFO L225 Difference]: With dead ends: 77773 [2025-03-16 18:30:41,045 INFO L226 Difference]: Without dead ends: 51870 [2025-03-16 18:30:41,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:41,303 INFO L435 NwaCegarLoop]: 1902 mSDtfsCounter, 1884 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 3394 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:41,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 3394 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:30:41,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51870 states. [2025-03-16 18:30:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51870 to 51866. [2025-03-16 18:30:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51866 states, 41648 states have (on average 1.608792739147138) internal successors, (67003), 42994 states have internal predecessors, (67003), 8004 states have call successors, (8004), 2310 states have call predecessors, (8004), 2213 states have return successors, (20338), 7809 states have call predecessors, (20338), 7906 states have call successors, (20338) [2025-03-16 18:30:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51866 states to 51866 states and 95345 transitions. [2025-03-16 18:30:44,289 INFO L78 Accepts]: Start accepts. Automaton has 51866 states and 95345 transitions. Word has length 129 [2025-03-16 18:30:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:44,289 INFO L471 AbstractCegarLoop]: Abstraction has 51866 states and 95345 transitions. [2025-03-16 18:30:44,289 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), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand 51866 states and 95345 transitions. [2025-03-16 18:30:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-16 18:30:44,292 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:44,292 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:44,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-16 18:30:44,293 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:44,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1223235201, now seen corresponding path program 1 times [2025-03-16 18:30:44,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:44,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950362261] [2025-03-16 18:30:44,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:44,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:44,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-16 18:30:44,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-16 18:30:44,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:44,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:30:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950362261] [2025-03-16 18:30:44,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950362261] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:44,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:44,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:30:44,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150420371] [2025-03-16 18:30:44,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:44,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:30:44,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:44,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:30:44,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:30:44,425 INFO L87 Difference]: Start difference. First operand 51866 states and 95345 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:48,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:48,419 INFO L93 Difference]: Finished difference Result 140291 states and 256677 transitions. [2025-03-16 18:30:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-16 18:30:48,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 129 [2025-03-16 18:30:48,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:30:49,038 INFO L225 Difference]: With dead ends: 140291 [2025-03-16 18:30:49,038 INFO L226 Difference]: Without dead ends: 88522 [2025-03-16 18:30:49,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:30:49,666 INFO L435 NwaCegarLoop]: 1059 mSDtfsCounter, 1104 mSDsluCounter, 5040 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 6099 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:30:49,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 6099 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:30:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88522 states. [2025-03-16 18:30:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88522 to 87334. [2025-03-16 18:30:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87334 states, 70135 states have (on average 1.597476295715406) internal successors, (112039), 72185 states have internal predecessors, (112039), 13286 states have call successors, (13286), 3818 states have call predecessors, (13286), 3912 states have return successors, (32555), 13378 states have call predecessors, (32555), 13155 states have call successors, (32555) [2025-03-16 18:30:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87334 states to 87334 states and 157880 transitions. [2025-03-16 18:30:54,050 INFO L78 Accepts]: Start accepts. Automaton has 87334 states and 157880 transitions. Word has length 129 [2025-03-16 18:30:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:30:54,050 INFO L471 AbstractCegarLoop]: Abstraction has 87334 states and 157880 transitions. [2025-03-16 18:30:54,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:30:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 87334 states and 157880 transitions. [2025-03-16 18:30:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-16 18:30:54,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:30:54,054 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:30:54,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-16 18:30:54,054 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:30:54,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:30:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1976677119, now seen corresponding path program 1 times [2025-03-16 18:30:54,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:30:54,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621443745] [2025-03-16 18:30:54,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:30:54,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:30:54,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-16 18:30:54,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-16 18:30:54,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:30:54,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:30:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:30:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:30:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621443745] [2025-03-16 18:30:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621443745] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:30:54,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:30:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:30:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536825350] [2025-03-16 18:30:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:30:54,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:30:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:30:54,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:30:54,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:30:54,123 INFO L87 Difference]: Start difference. First operand 87334 states and 157880 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:30:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:30:59,673 INFO L93 Difference]: Finished difference Result 160757 states and 288287 transitions. [2025-03-16 18:30:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:30:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2025-03-16 18:30:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:31:00,076 INFO L225 Difference]: With dead ends: 160757 [2025-03-16 18:31:00,076 INFO L226 Difference]: Without dead ends: 87337 [2025-03-16 18:31:00,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:31:00,847 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 3 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:31:00,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2885 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:31:00,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87337 states.