./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product30.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 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:28:11,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:28:11,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:28:11,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:28:11,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:28:11,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:28:11,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:28:11,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:28:11,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:28:11,830 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:28:11,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:28:11,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:28:11,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:28:11,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:28:11,831 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:28:11,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:28:11,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:28:11,831 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:28:11,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:28:11,832 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:28:11,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:28:11,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:28:11,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:28:11,833 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 -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2025-03-08 05:28:12,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:28:12,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:28:12,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:28:12,072 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:28:12,072 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:28:12,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2025-03-08 05:28:13,199 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5418161e5/712a021e9e9f402a8c30e108d4bf8237/FLAG714b5bf76 [2025-03-08 05:28:13,502 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:28:13,503 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2025-03-08 05:28:13,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5418161e5/712a021e9e9f402a8c30e108d4bf8237/FLAG714b5bf76 [2025-03-08 05:28:13,772 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5418161e5/712a021e9e9f402a8c30e108d4bf8237 [2025-03-08 05:28:13,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:28:13,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:28:13,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:28:13,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:28:13,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:28:13,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:28:13" (1/1) ... [2025-03-08 05:28:13,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5202f898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:13, skipping insertion in model container [2025-03-08 05:28:13,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:28:13" (1/1) ... [2025-03-08 05:28:13,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:28:14,029 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_spec3_product30.cil.c[14523,14536] [2025-03-08 05:28:14,185 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:28:14,201 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:28:14,207 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2025-03-08 05:28:14,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [169] [2025-03-08 05:28:14,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [528] [2025-03-08 05:28:14,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [623] [2025-03-08 05:28:14,208 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [813] [2025-03-08 05:28:14,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [828] [2025-03-08 05:28:14,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [837] [2025-03-08 05:28:14,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2419] [2025-03-08 05:28:14,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2785] [2025-03-08 05:28:14,209 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2820] [2025-03-08 05:28:14,233 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_spec3_product30.cil.c[14523,14536] [2025-03-08 05:28:14,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:28:14,308 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:28:14,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14 WrapperNode [2025-03-08 05:28:14,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:28:14,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:28:14,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:28:14,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:28:14,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,370 INFO L138 Inliner]: procedures = 93, calls = 353, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 945 [2025-03-08 05:28:14,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:28:14,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:28:14,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:28:14,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:28:14,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,384 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,408 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]. [2025-03-08 05:28:14,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,423 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:28:14,462 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:28:14,462 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:28:14,462 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:28:14,463 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (1/1) ... [2025-03-08 05:28:14,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:28:14,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:14,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 05:28:14,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 05:28:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:28:14,510 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-08 05:28:14,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-08 05:28:14,511 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-08 05:28:14,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-08 05:28:14,512 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-08 05:28:14,512 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-08 05:28:14,513 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-08 05:28:14,513 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 05:28:14,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 05:28:14,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 05:28:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 05:28:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 05:28:14,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-08 05:28:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-08 05:28:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-08 05:28:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-08 05:28:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2025-03-08 05:28:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:28:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:28:14,517 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-08 05:28:14,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-08 05:28:14,679 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:28:14,682 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:28:14,709 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1140: #res := ~retValue_acc~9; [2025-03-08 05:28:14,732 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L88: #res := ~retValue_acc~0; [2025-03-08 05:28:14,809 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664: #res#1 := ~retValue_acc~14#1; [2025-03-08 05:28:14,810 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1698-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~15#1; [2025-03-08 05:28:14,826 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1796: #res := ~retValue_acc~18; [2025-03-08 05:28:15,012 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1625: #res := ~retValue_acc~13; [2025-03-08 05:28:15,082 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~11#1; [2025-03-08 05:28:15,082 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1273-1: isIdle_#res#1 := isIdle_~retValue_acc~12#1; [2025-03-08 05:28:15,146 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1097-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~7#1; [2025-03-08 05:28:15,151 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3478: #res := ~retValue_acc~27; [2025-03-08 05:28:15,162 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~2; [2025-03-08 05:28:15,165 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L915: #res := ~retValue_acc~5; [2025-03-08 05:28:15,167 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1088: #res := ~retValue_acc~6; [2025-03-08 05:28:15,326 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L127: #res := ~retValue_acc~1; [2025-03-08 05:28:15,344 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1131: #res := ~retValue_acc~8; [2025-03-08 05:28:15,381 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1180-1: isEmpty_#res#1 := isEmpty_~retValue_acc~10#1; [2025-03-08 05:28:15,442 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3167: #res := ~retValue_acc~26; [2025-03-08 05:28:15,530 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1754-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~16#1; [2025-03-08 05:28:15,530 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1782-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~17#1; [2025-03-08 05:28:15,619 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L525-1: main_#res#1 := main_~retValue_acc~4#1; [2025-03-08 05:28:15,620 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2817-1: valid_product_#res#1 := valid_product_~retValue_acc~24#1; [2025-03-08 05:28:15,631 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2931: #res := ~retValue_acc~25; [2025-03-08 05:28:15,741 INFO L? ?]: Removed 474 outVars from TransFormulas that were not future-live. [2025-03-08 05:28:15,741 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:28:15,764 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:28:15,768 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:28:15,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:28:15 BoogieIcfgContainer [2025-03-08 05:28:15,769 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:28:15,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:28:15,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:28:15,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:28:15,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:28:13" (1/3) ... [2025-03-08 05:28:15,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6e8953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:28:15, skipping insertion in model container [2025-03-08 05:28:15,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:28:14" (2/3) ... [2025-03-08 05:28:15,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6e8953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:28:15, skipping insertion in model container [2025-03-08 05:28:15,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:28:15" (3/3) ... [2025-03-08 05:28:15,778 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2025-03-08 05:28:15,789 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:28:15,792 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product30.cil.c that has 28 procedures, 603 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:28:15,848 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:28:15,855 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;@3ceb6efc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:28:15,856 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:28:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 603 states, 466 states have (on average 1.6759656652360515) internal successors, (781), 486 states have internal predecessors, (781), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-08 05:28:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 05:28:15,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:15,869 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:15,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:15,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash -14144440, now seen corresponding path program 1 times [2025-03-08 05:28:15,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:15,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853432570] [2025-03-08 05:28:15,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:15,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:15,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 05:28:16,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 05:28:16,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:16,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:16,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853432570] [2025-03-08 05:28:16,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853432570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:16,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:16,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:16,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903038885] [2025-03-08 05:28:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:16,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:16,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:16,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:16,458 INFO L87 Difference]: Start difference. First operand has 603 states, 466 states have (on average 1.6759656652360515) internal successors, (781), 486 states have internal predecessors, (781), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:16,660 INFO L93 Difference]: Finished difference Result 1203 states and 2006 transitions. [2025-03-08 05:28:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:16,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2025-03-08 05:28:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:16,681 INFO L225 Difference]: With dead ends: 1203 [2025-03-08 05:28:16,681 INFO L226 Difference]: Without dead ends: 608 [2025-03-08 05:28:16,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:28:16,695 INFO L435 NwaCegarLoop]: 981 mSDtfsCounter, 91 mSDsluCounter, 4820 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5801 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:16,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5801 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:28:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2025-03-08 05:28:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 606. [2025-03-08 05:28:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 469 states have (on average 1.6695095948827292) internal successors, (783), 489 states have internal predecessors, (783), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2025-03-08 05:28:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1000 transitions. [2025-03-08 05:28:16,773 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1000 transitions. Word has length 67 [2025-03-08 05:28:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:16,773 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 1000 transitions. [2025-03-08 05:28:16,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1000 transitions. [2025-03-08 05:28:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 05:28:16,776 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:16,776 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:16,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 05:28:16,778 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:16,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1198742315, now seen corresponding path program 1 times [2025-03-08 05:28:16,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:16,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753577684] [2025-03-08 05:28:16,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:16,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:16,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 05:28:16,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 05:28:16,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:16,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:17,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753577684] [2025-03-08 05:28:17,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753577684] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:17,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:17,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310361815] [2025-03-08 05:28:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:17,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:17,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:17,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:17,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:17,075 INFO L87 Difference]: Start difference. First operand 606 states and 1000 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:17,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:17,221 INFO L93 Difference]: Finished difference Result 1207 states and 2003 transitions. [2025-03-08 05:28:17,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:17,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2025-03-08 05:28:17,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:17,230 INFO L225 Difference]: With dead ends: 1207 [2025-03-08 05:28:17,231 INFO L226 Difference]: Without dead ends: 617 [2025-03-08 05:28:17,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:28:17,237 INFO L435 NwaCegarLoop]: 981 mSDtfsCounter, 90 mSDsluCounter, 4809 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5790 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:17,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5790 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:28:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2025-03-08 05:28:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 606. [2025-03-08 05:28:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 469 states have (on average 1.6695095948827292) internal successors, (783), 489 states have internal predecessors, (783), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2025-03-08 05:28:17,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1000 transitions. [2025-03-08 05:28:17,266 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1000 transitions. Word has length 68 [2025-03-08 05:28:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:17,267 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 1000 transitions. [2025-03-08 05:28:17,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1000 transitions. [2025-03-08 05:28:17,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 05:28:17,271 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:17,271 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:17,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 05:28:17,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:17,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2039111724, now seen corresponding path program 1 times [2025-03-08 05:28:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801275949] [2025-03-08 05:28:17,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:17,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:17,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 05:28:17,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 05:28:17,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:17,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:17,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801275949] [2025-03-08 05:28:17,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801275949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:17,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:17,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153024748] [2025-03-08 05:28:17,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:17,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:17,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:17,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:17,402 INFO L87 Difference]: Start difference. First operand 606 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:17,471 INFO L93 Difference]: Finished difference Result 1194 states and 1981 transitions. [2025-03-08 05:28:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-03-08 05:28:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:17,476 INFO L225 Difference]: With dead ends: 1194 [2025-03-08 05:28:17,476 INFO L226 Difference]: Without dead ends: 576 [2025-03-08 05:28:17,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:28:17,479 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 14 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:17,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2905 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-08 05:28:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-03-08 05:28:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 442 states have (on average 1.6538461538461537) internal successors, (731), 460 states have internal predecessors, (731), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 944 transitions. [2025-03-08 05:28:17,499 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 944 transitions. Word has length 68 [2025-03-08 05:28:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:17,499 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 944 transitions. [2025-03-08 05:28:17,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 944 transitions. [2025-03-08 05:28:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 05:28:17,500 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:17,500 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:17,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 05:28:17,501 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:17,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:17,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1538284098, now seen corresponding path program 1 times [2025-03-08 05:28:17,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:17,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142069370] [2025-03-08 05:28:17,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:17,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:17,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 05:28:17,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 05:28:17,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:17,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:17,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:17,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142069370] [2025-03-08 05:28:17,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142069370] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:17,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:17,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:17,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636886324] [2025-03-08 05:28:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:17,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:17,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:17,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:17,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:17,712 INFO L87 Difference]: Start difference. First operand 576 states and 944 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:17,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:17,775 INFO L93 Difference]: Finished difference Result 1145 states and 1887 transitions. [2025-03-08 05:28:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2025-03-08 05:28:17,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:17,779 INFO L225 Difference]: With dead ends: 1145 [2025-03-08 05:28:17,779 INFO L226 Difference]: Without dead ends: 570 [2025-03-08 05:28:17,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:28:17,782 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 63 mSDsluCounter, 4612 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5546 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:17,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5546 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-03-08 05:28:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-03-08 05:28:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 436 states have (on average 1.646788990825688) internal successors, (718), 454 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:17,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 931 transitions. [2025-03-08 05:28:17,801 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 931 transitions. Word has length 69 [2025-03-08 05:28:17,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:17,801 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 931 transitions. [2025-03-08 05:28:17,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 931 transitions. [2025-03-08 05:28:17,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 05:28:17,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:17,803 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:17,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 05:28:17,803 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:17,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:17,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1291611855, now seen corresponding path program 1 times [2025-03-08 05:28:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:17,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276331111] [2025-03-08 05:28:17,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:17,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:17,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 05:28:17,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 05:28:17,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:17,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:17,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:17,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276331111] [2025-03-08 05:28:17,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276331111] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:17,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:17,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365694416] [2025-03-08 05:28:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:17,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:17,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:17,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:17,945 INFO L87 Difference]: Start difference. First operand 570 states and 931 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,014 INFO L93 Difference]: Finished difference Result 1133 states and 1861 transitions. [2025-03-08 05:28:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:18,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-03-08 05:28:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,020 INFO L225 Difference]: With dead ends: 1133 [2025-03-08 05:28:18,020 INFO L226 Difference]: Without dead ends: 564 [2025-03-08 05:28:18,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:28:18,023 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 49 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5486 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:18,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5486 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-08 05:28:18,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-08 05:28:18,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 448 states have internal predecessors, (705), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 918 transitions. [2025-03-08 05:28:18,052 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 918 transitions. Word has length 70 [2025-03-08 05:28:18,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,053 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 918 transitions. [2025-03-08 05:28:18,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 918 transitions. [2025-03-08 05:28:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 05:28:18,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,054 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:18,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 05:28:18,055 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,055 INFO L85 PathProgramCache]: Analyzing trace with hash 268818183, now seen corresponding path program 1 times [2025-03-08 05:28:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795101963] [2025-03-08 05:28:18,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 05:28:18,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 05:28:18,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:18,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795101963] [2025-03-08 05:28:18,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795101963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:28:18,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191392404] [2025-03-08 05:28:18,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:28:18,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:28:18,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:28:18,195 INFO L87 Difference]: Start difference. First operand 564 states and 918 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:18,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,250 INFO L93 Difference]: Finished difference Result 1121 states and 1835 transitions. [2025-03-08 05:28:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:28:18,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-03-08 05:28:18,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,255 INFO L225 Difference]: With dead ends: 1121 [2025-03-08 05:28:18,255 INFO L226 Difference]: Without dead ends: 564 [2025-03-08 05:28:18,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:28:18,259 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 24 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5438 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:18,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5438 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-08 05:28:18,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-08 05:28:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.6372093023255814) internal successors, (704), 448 states have internal predecessors, (704), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 917 transitions. [2025-03-08 05:28:18,284 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 917 transitions. Word has length 70 [2025-03-08 05:28:18,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,285 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 917 transitions. [2025-03-08 05:28:18,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 917 transitions. [2025-03-08 05:28:18,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-08 05:28:18,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,287 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:18,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 05:28:18,288 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1255405508, now seen corresponding path program 1 times [2025-03-08 05:28:18,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451987264] [2025-03-08 05:28:18,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-08 05:28:18,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-08 05:28:18,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:18,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451987264] [2025-03-08 05:28:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451987264] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:18,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267731390] [2025-03-08 05:28:18,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:18,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:18,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,384 INFO L87 Difference]: Start difference. First operand 564 states and 917 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,428 INFO L93 Difference]: Finished difference Result 1112 states and 1820 transitions. [2025-03-08 05:28:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2025-03-08 05:28:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,434 INFO L225 Difference]: With dead ends: 1112 [2025-03-08 05:28:18,434 INFO L226 Difference]: Without dead ends: 564 [2025-03-08 05:28:18,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,438 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 15 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:18,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2691 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-08 05:28:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-08 05:28:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.6348837209302325) internal successors, (703), 448 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 916 transitions. [2025-03-08 05:28:18,460 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 916 transitions. Word has length 71 [2025-03-08 05:28:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,460 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 916 transitions. [2025-03-08 05:28:18,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 916 transitions. [2025-03-08 05:28:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-08 05:28:18,463 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,463 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:18,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 05:28:18,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1131150839, now seen corresponding path program 1 times [2025-03-08 05:28:18,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130602808] [2025-03-08 05:28:18,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-08 05:28:18,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-08 05:28:18,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:18,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130602808] [2025-03-08 05:28:18,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130602808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:18,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912537224] [2025-03-08 05:28:18,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:18,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:18,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,548 INFO L87 Difference]: Start difference. First operand 564 states and 916 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,587 INFO L93 Difference]: Finished difference Result 1112 states and 1818 transitions. [2025-03-08 05:28:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:18,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2025-03-08 05:28:18,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,592 INFO L225 Difference]: With dead ends: 1112 [2025-03-08 05:28:18,592 INFO L226 Difference]: Without dead ends: 564 [2025-03-08 05:28:18,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,595 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 14 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:18,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2693 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-08 05:28:18,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-08 05:28:18,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.6325581395348838) internal successors, (702), 448 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 915 transitions. [2025-03-08 05:28:18,613 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 915 transitions. Word has length 72 [2025-03-08 05:28:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,614 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 915 transitions. [2025-03-08 05:28:18,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 915 transitions. [2025-03-08 05:28:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-08 05:28:18,615 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:18,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 05:28:18,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1745890017, now seen corresponding path program 1 times [2025-03-08 05:28:18,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805300868] [2025-03-08 05:28:18,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-08 05:28:18,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-08 05:28:18,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:18,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805300868] [2025-03-08 05:28:18,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805300868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:18,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727881028] [2025-03-08 05:28:18,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:18,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:18,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,710 INFO L87 Difference]: Start difference. First operand 564 states and 915 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,745 INFO L93 Difference]: Finished difference Result 1112 states and 1816 transitions. [2025-03-08 05:28:18,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:18,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2025-03-08 05:28:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,749 INFO L225 Difference]: With dead ends: 1112 [2025-03-08 05:28:18,750 INFO L226 Difference]: Without dead ends: 564 [2025-03-08 05:28:18,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,753 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 13 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:18,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2695 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-08 05:28:18,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-08 05:28:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.630232558139535) internal successors, (701), 448 states have internal predecessors, (701), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 914 transitions. [2025-03-08 05:28:18,770 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 914 transitions. Word has length 73 [2025-03-08 05:28:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,770 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 914 transitions. [2025-03-08 05:28:18,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 914 transitions. [2025-03-08 05:28:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-08 05:28:18,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,771 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:18,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 05:28:18,772 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash -290719622, now seen corresponding path program 1 times [2025-03-08 05:28:18,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139486123] [2025-03-08 05:28:18,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-08 05:28:18,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-08 05:28:18,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139486123] [2025-03-08 05:28:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139486123] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216712571] [2025-03-08 05:28:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:18,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:18,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:18,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,850 INFO L87 Difference]: Start difference. First operand 564 states and 914 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:18,889 INFO L93 Difference]: Finished difference Result 1112 states and 1814 transitions. [2025-03-08 05:28:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:28:18,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2025-03-08 05:28:18,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:18,896 INFO L225 Difference]: With dead ends: 1112 [2025-03-08 05:28:18,896 INFO L226 Difference]: Without dead ends: 564 [2025-03-08 05:28:18,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:18,900 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 12 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:18,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2697 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:18,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-08 05:28:18,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-08 05:28:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.627906976744186) internal successors, (700), 448 states have internal predecessors, (700), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-08 05:28:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 913 transitions. [2025-03-08 05:28:18,918 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 913 transitions. Word has length 74 [2025-03-08 05:28:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:18,919 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 913 transitions. [2025-03-08 05:28:18,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-08 05:28:18,919 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 913 transitions. [2025-03-08 05:28:18,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-08 05:28:18,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:18,920 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:18,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 05:28:18,920 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:18,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:18,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1975953918, now seen corresponding path program 1 times [2025-03-08 05:28:18,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:18,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209010234] [2025-03-08 05:28:18,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:18,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:18,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-08 05:28:18,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-08 05:28:18,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:18,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 05:28:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209010234] [2025-03-08 05:28:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209010234] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570668072] [2025-03-08 05:28:19,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:19,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:19,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:19,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:28:19,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-08 05:28:19,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-08 05:28:19,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:19,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:19,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:28:19,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:28:19,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570668072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:19,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:19,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-08 05:28:19,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060992676] [2025-03-08 05:28:19,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:19,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:28:19,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:19,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:28:19,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:19,481 INFO L87 Difference]: Start difference. First operand 564 states and 913 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:19,543 INFO L93 Difference]: Finished difference Result 1603 states and 2627 transitions. [2025-03-08 05:28:19,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:28:19,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2025-03-08 05:28:19,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:19,551 INFO L225 Difference]: With dead ends: 1603 [2025-03-08 05:28:19,551 INFO L226 Difference]: Without dead ends: 1057 [2025-03-08 05:28:19,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:19,556 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 875 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:19,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1729 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2025-03-08 05:28:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1042. [2025-03-08 05:28:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 802 states have (on average 1.6408977556109725) internal successors, (1316), 837 states have internal predecessors, (1316), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 183 states have call predecessors, (193), 188 states have call successors, (193) [2025-03-08 05:28:19,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1700 transitions. [2025-03-08 05:28:19,594 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1700 transitions. Word has length 75 [2025-03-08 05:28:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:19,595 INFO L471 AbstractCegarLoop]: Abstraction has 1042 states and 1700 transitions. [2025-03-08 05:28:19,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:19,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1700 transitions. [2025-03-08 05:28:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-08 05:28:19,597 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:19,597 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:19,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 05:28:19,801 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,SelfDestructingSolverStorable10 [2025-03-08 05:28:19,801 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:19,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:19,801 INFO L85 PathProgramCache]: Analyzing trace with hash 170670373, now seen corresponding path program 1 times [2025-03-08 05:28:19,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:19,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581492710] [2025-03-08 05:28:19,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:19,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-08 05:28:19,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-08 05:28:19,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:19,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 05:28:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581492710] [2025-03-08 05:28:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581492710] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246945580] [2025-03-08 05:28:19,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:19,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:19,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:19,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:19,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:28:20,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-08 05:28:20,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-08 05:28:20,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:20,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:20,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:28:20,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:28:20,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246945580] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-08 05:28:20,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418798419] [2025-03-08 05:28:20,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:20,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:28:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:20,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:28:20,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:20,301 INFO L87 Difference]: Start difference. First operand 1042 states and 1700 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:20,369 INFO L93 Difference]: Finished difference Result 2559 states and 4203 transitions. [2025-03-08 05:28:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:28:20,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2025-03-08 05:28:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:20,379 INFO L225 Difference]: With dead ends: 2559 [2025-03-08 05:28:20,379 INFO L226 Difference]: Without dead ends: 1535 [2025-03-08 05:28:20,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:28:20,385 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 873 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:20,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1784 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2025-03-08 05:28:20,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1487. [2025-03-08 05:28:20,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1147 states have (on average 1.6530078465562337) internal successors, (1896), 1199 states have internal predecessors, (1896), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 261 states have call predecessors, (278), 268 states have call successors, (278) [2025-03-08 05:28:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2445 transitions. [2025-03-08 05:28:20,450 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2445 transitions. Word has length 76 [2025-03-08 05:28:20,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:20,451 INFO L471 AbstractCegarLoop]: Abstraction has 1487 states and 2445 transitions. [2025-03-08 05:28:20,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:28:20,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2445 transitions. [2025-03-08 05:28:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 05:28:20,453 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:20,453 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:20,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 05:28:20,654 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,SelfDestructingSolverStorable11 [2025-03-08 05:28:20,654 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:20,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash 172969930, now seen corresponding path program 1 times [2025-03-08 05:28:20,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:20,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855007964] [2025-03-08 05:28:20,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:20,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:20,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 05:28:20,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 05:28:20,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:20,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:20,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:20,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855007964] [2025-03-08 05:28:20,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855007964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:20,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:20,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314159724] [2025-03-08 05:28:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:20,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:20,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:20,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:20,815 INFO L87 Difference]: Start difference. First operand 1487 states and 2445 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 05:28:21,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:21,322 INFO L93 Difference]: Finished difference Result 4385 states and 7384 transitions. [2025-03-08 05:28:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:21,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2025-03-08 05:28:21,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:21,366 INFO L225 Difference]: With dead ends: 4385 [2025-03-08 05:28:21,366 INFO L226 Difference]: Without dead ends: 2916 [2025-03-08 05:28:21,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:28:21,372 INFO L435 NwaCegarLoop]: 1047 mSDtfsCounter, 908 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 4795 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:21,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 4795 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:28:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2025-03-08 05:28:21,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2869. [2025-03-08 05:28:21,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2215 states have (on average 1.653273137697517) internal successors, (3662), 2315 states have internal predecessors, (3662), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (637), 507 states have call predecessors, (637), 517 states have call successors, (637) [2025-03-08 05:28:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4820 transitions. [2025-03-08 05:28:21,488 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4820 transitions. Word has length 78 [2025-03-08 05:28:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:21,489 INFO L471 AbstractCegarLoop]: Abstraction has 2869 states and 4820 transitions. [2025-03-08 05:28:21,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-08 05:28:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4820 transitions. [2025-03-08 05:28:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 05:28:21,491 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:21,491 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:21,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 05:28:21,491 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:21,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash 459439024, now seen corresponding path program 1 times [2025-03-08 05:28:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:21,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018091384] [2025-03-08 05:28:21,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:21,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 05:28:21,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 05:28:21,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:21,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 05:28:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:21,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018091384] [2025-03-08 05:28:21,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018091384] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:21,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323068611] [2025-03-08 05:28:21,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:21,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:21,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:21,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:21,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:28:21,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 05:28:21,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 05:28:21,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:21,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:21,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:28:21,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:28:22,041 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:22,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323068611] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:22,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:22,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-08 05:28:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688484737] [2025-03-08 05:28:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:22,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:22,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:22,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:28:22,042 INFO L87 Difference]: Start difference. First operand 2869 states and 4820 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-08 05:28:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:22,821 INFO L93 Difference]: Finished difference Result 7762 states and 13320 transitions. [2025-03-08 05:28:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:22,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2025-03-08 05:28:22,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:22,856 INFO L225 Difference]: With dead ends: 7762 [2025-03-08 05:28:22,856 INFO L226 Difference]: Without dead ends: 4911 [2025-03-08 05:28:22,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:28:22,874 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 776 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 4133 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:22,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 4133 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 05:28:22,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2025-03-08 05:28:23,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4868. [2025-03-08 05:28:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4868 states, 3754 states have (on average 1.6078849227490677) internal successors, (6036), 3920 states have internal predecessors, (6036), 874 states have call successors, (874), 232 states have call predecessors, (874), 239 states have return successors, (1207), 855 states have call predecessors, (1207), 868 states have call successors, (1207) [2025-03-08 05:28:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 8117 transitions. [2025-03-08 05:28:23,102 INFO L78 Accepts]: Start accepts. Automaton has 4868 states and 8117 transitions. Word has length 79 [2025-03-08 05:28:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:23,102 INFO L471 AbstractCegarLoop]: Abstraction has 4868 states and 8117 transitions. [2025-03-08 05:28:23,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-08 05:28:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4868 states and 8117 transitions. [2025-03-08 05:28:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-08 05:28:23,103 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:23,104 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:23,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 05:28:23,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:23,308 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:23,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash -615192901, now seen corresponding path program 1 times [2025-03-08 05:28:23,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:23,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338468169] [2025-03-08 05:28:23,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:23,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:23,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-08 05:28:23,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-08 05:28:23,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:23,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 05:28:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338468169] [2025-03-08 05:28:23,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338468169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:23,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:23,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691536436] [2025-03-08 05:28:23,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:23,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:23,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:23,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:23,405 INFO L87 Difference]: Start difference. First operand 4868 states and 8117 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 05:28:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:23,659 INFO L93 Difference]: Finished difference Result 9742 states and 16409 transitions. [2025-03-08 05:28:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2025-03-08 05:28:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:23,695 INFO L225 Difference]: With dead ends: 9742 [2025-03-08 05:28:23,695 INFO L226 Difference]: Without dead ends: 4892 [2025-03-08 05:28:23,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:28:23,719 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 12 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:23,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2661 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:28:23,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2025-03-08 05:28:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 4876. [2025-03-08 05:28:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 3760 states have (on average 1.6063829787234043) internal successors, (6040), 3926 states have internal predecessors, (6040), 874 states have call successors, (874), 236 states have call predecessors, (874), 241 states have return successors, (1196), 853 states have call predecessors, (1196), 868 states have call successors, (1196) [2025-03-08 05:28:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 8110 transitions. [2025-03-08 05:28:23,889 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 8110 transitions. Word has length 79 [2025-03-08 05:28:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:23,889 INFO L471 AbstractCegarLoop]: Abstraction has 4876 states and 8110 transitions. [2025-03-08 05:28:23,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-08 05:28:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 8110 transitions. [2025-03-08 05:28:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-08 05:28:23,890 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:23,890 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:23,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 05:28:23,890 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:23,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash -687623472, now seen corresponding path program 1 times [2025-03-08 05:28:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886240782] [2025-03-08 05:28:23,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:23,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-08 05:28:23,908 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-08 05:28:23,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:23,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-08 05:28:24,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:24,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886240782] [2025-03-08 05:28:24,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886240782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:24,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:24,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201314183] [2025-03-08 05:28:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:24,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:24,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:24,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:24,014 INFO L87 Difference]: Start difference. First operand 4876 states and 8110 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 05:28:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:24,601 INFO L93 Difference]: Finished difference Result 14561 states and 25241 transitions. [2025-03-08 05:28:24,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:24,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2025-03-08 05:28:24,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:24,683 INFO L225 Difference]: With dead ends: 14561 [2025-03-08 05:28:24,683 INFO L226 Difference]: Without dead ends: 9703 [2025-03-08 05:28:24,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:28:24,713 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 906 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:24,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 4563 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:28:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9703 states. [2025-03-08 05:28:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9703 to 9634. [2025-03-08 05:28:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9634 states, 7432 states have (on average 1.602395048439182) internal successors, (11909), 7758 states have internal predecessors, (11909), 1720 states have call successors, (1720), 466 states have call predecessors, (1720), 481 states have return successors, (2914), 1689 states have call predecessors, (2914), 1710 states have call successors, (2914) [2025-03-08 05:28:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9634 states to 9634 states and 16543 transitions. [2025-03-08 05:28:25,096 INFO L78 Accepts]: Start accepts. Automaton has 9634 states and 16543 transitions. Word has length 87 [2025-03-08 05:28:25,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:25,097 INFO L471 AbstractCegarLoop]: Abstraction has 9634 states and 16543 transitions. [2025-03-08 05:28:25,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-08 05:28:25,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9634 states and 16543 transitions. [2025-03-08 05:28:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-08 05:28:25,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:25,099 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-08 05:28:25,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 05:28:25,099 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:25,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash -373600644, now seen corresponding path program 1 times [2025-03-08 05:28:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:25,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521965968] [2025-03-08 05:28:25,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:25,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:25,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-08 05:28:25,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-08 05:28:25,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:25,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 05:28:25,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:25,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521965968] [2025-03-08 05:28:25,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521965968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:25,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:25,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:25,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576524966] [2025-03-08 05:28:25,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:25,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:25,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:25,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:25,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:25,164 INFO L87 Difference]: Start difference. First operand 9634 states and 16543 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-08 05:28:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:25,573 INFO L93 Difference]: Finished difference Result 19322 states and 33659 transitions. [2025-03-08 05:28:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:25,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2025-03-08 05:28:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:25,653 INFO L225 Difference]: With dead ends: 19322 [2025-03-08 05:28:25,653 INFO L226 Difference]: Without dead ends: 9706 [2025-03-08 05:28:25,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:28:25,702 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 12 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:25,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2652 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9706 states. [2025-03-08 05:28:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 9674. [2025-03-08 05:28:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9674 states, 7468 states have (on average 1.6000267809319764) internal successors, (11949), 7786 states have internal predecessors, (11949), 1720 states have call successors, (1720), 482 states have call predecessors, (1720), 485 states have return successors, (2898), 1685 states have call predecessors, (2898), 1710 states have call successors, (2898) [2025-03-08 05:28:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9674 states to 9674 states and 16567 transitions. [2025-03-08 05:28:26,202 INFO L78 Accepts]: Start accepts. Automaton has 9674 states and 16567 transitions. Word has length 88 [2025-03-08 05:28:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:26,203 INFO L471 AbstractCegarLoop]: Abstraction has 9674 states and 16567 transitions. [2025-03-08 05:28:26,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-08 05:28:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 9674 states and 16567 transitions. [2025-03-08 05:28:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-08 05:28:26,205 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:26,205 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-08 05:28:26,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 05:28:26,205 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:26,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1161667736, now seen corresponding path program 1 times [2025-03-08 05:28:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253976188] [2025-03-08 05:28:26,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:26,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:26,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-08 05:28:26,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-08 05:28:26,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:26,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:28:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253976188] [2025-03-08 05:28:26,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253976188] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:26,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:26,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245471262] [2025-03-08 05:28:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:26,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:26,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:26,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:26,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:26,358 INFO L87 Difference]: Start difference. First operand 9674 states and 16567 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 05:28:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:27,341 INFO L93 Difference]: Finished difference Result 29033 states and 52794 transitions. [2025-03-08 05:28:27,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:27,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2025-03-08 05:28:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:27,504 INFO L225 Difference]: With dead ends: 29033 [2025-03-08 05:28:27,505 INFO L226 Difference]: Without dead ends: 19377 [2025-03-08 05:28:27,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:28:27,570 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 901 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 4577 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:27,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 4577 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:28:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19377 states. [2025-03-08 05:28:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19377 to 19276. [2025-03-08 05:28:28,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19276 states, 14884 states have (on average 1.5965466272507391) internal successors, (23763), 15514 states have internal predecessors, (23763), 3418 states have call successors, (3418), 958 states have call predecessors, (3418), 973 states have return successors, (7478), 3363 states have call predecessors, (7478), 3400 states have call successors, (7478) [2025-03-08 05:28:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19276 states to 19276 states and 34659 transitions. [2025-03-08 05:28:28,430 INFO L78 Accepts]: Start accepts. Automaton has 19276 states and 34659 transitions. Word has length 97 [2025-03-08 05:28:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:28,431 INFO L471 AbstractCegarLoop]: Abstraction has 19276 states and 34659 transitions. [2025-03-08 05:28:28,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-08 05:28:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 19276 states and 34659 transitions. [2025-03-08 05:28:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-08 05:28:28,432 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:28,433 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-08 05:28:28,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 05:28:28,434 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:28,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1033886997, now seen corresponding path program 1 times [2025-03-08 05:28:28,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:28,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096389616] [2025-03-08 05:28:28,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:28,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:28,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-08 05:28:28,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-08 05:28:28,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:28,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-08 05:28:28,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:28,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096389616] [2025-03-08 05:28:28,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096389616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:28,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:28,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:28,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599752876] [2025-03-08 05:28:28,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:28,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:28,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:28,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:28,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:28,508 INFO L87 Difference]: Start difference. First operand 19276 states and 34659 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-08 05:28:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:29,296 INFO L93 Difference]: Finished difference Result 38678 states and 71153 transitions. [2025-03-08 05:28:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:29,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2025-03-08 05:28:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:29,575 INFO L225 Difference]: With dead ends: 38678 [2025-03-08 05:28:29,575 INFO L226 Difference]: Without dead ends: 19420 [2025-03-08 05:28:29,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:28:29,692 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 11 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:29,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2655 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19420 states. [2025-03-08 05:28:30,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19420 to 19356. [2025-03-08 05:28:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19356 states, 14956 states have (on average 1.5942096817330837) internal successors, (23843), 15586 states have internal predecessors, (23843), 3418 states have call successors, (3418), 974 states have call predecessors, (3418), 981 states have return successors, (7458), 3355 states have call predecessors, (7458), 3400 states have call successors, (7458) [2025-03-08 05:28:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19356 states to 19356 states and 34719 transitions. [2025-03-08 05:28:30,652 INFO L78 Accepts]: Start accepts. Automaton has 19356 states and 34719 transitions. Word has length 98 [2025-03-08 05:28:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:30,652 INFO L471 AbstractCegarLoop]: Abstraction has 19356 states and 34719 transitions. [2025-03-08 05:28:30,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-08 05:28:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 19356 states and 34719 transitions. [2025-03-08 05:28:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-08 05:28:30,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:30,655 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2025-03-08 05:28:30,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 05:28:30,656 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:30,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1678027855, now seen corresponding path program 1 times [2025-03-08 05:28:30,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:30,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757372937] [2025-03-08 05:28:30,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:30,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:30,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-08 05:28:30,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-08 05:28:30,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:30,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:28:30,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:30,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757372937] [2025-03-08 05:28:30,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757372937] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:30,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:30,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:28:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772789215] [2025-03-08 05:28:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:30,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:28:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:30,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:28:30,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:28:30,817 INFO L87 Difference]: Start difference. First operand 19356 states and 34719 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-08 05:28:32,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:32,584 INFO L93 Difference]: Finished difference Result 58205 states and 114611 transitions. [2025-03-08 05:28:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:28:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2025-03-08 05:28:32,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:32,939 INFO L225 Difference]: With dead ends: 58205 [2025-03-08 05:28:32,939 INFO L226 Difference]: Without dead ends: 38867 [2025-03-08 05:28:33,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:28:33,085 INFO L435 NwaCegarLoop]: 1014 mSDtfsCounter, 896 mSDsluCounter, 3683 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 4697 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:33,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 4697 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:28:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38867 states. [2025-03-08 05:28:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38867 to 38702. [2025-03-08 05:28:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38702 states, 29908 states have (on average 1.5917145914136686) internal successors, (47605), 31162 states have internal predecessors, (47605), 6820 states have call successors, (6820), 1942 states have call predecessors, (6820), 1973 states have return successors, (20622), 6717 states have call predecessors, (20622), 6786 states have call successors, (20622) [2025-03-08 05:28:35,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38702 states to 38702 states and 75047 transitions. [2025-03-08 05:28:35,203 INFO L78 Accepts]: Start accepts. Automaton has 38702 states and 75047 transitions. Word has length 108 [2025-03-08 05:28:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:35,205 INFO L471 AbstractCegarLoop]: Abstraction has 38702 states and 75047 transitions. [2025-03-08 05:28:35,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-08 05:28:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 38702 states and 75047 transitions. [2025-03-08 05:28:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-08 05:28:35,208 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:35,208 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:28:35,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 05:28:35,208 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:35,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:35,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1850859542, now seen corresponding path program 1 times [2025-03-08 05:28:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088494700] [2025-03-08 05:28:35,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:35,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:35,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 05:28:35,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 05:28:35,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:35,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:28:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088494700] [2025-03-08 05:28:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088494700] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:28:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052756114] [2025-03-08 05:28:35,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:35,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:35,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:28:35,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:28:35,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:28:35,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 05:28:35,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 05:28:35,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:35,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:35,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 05:28:35,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:28:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-08 05:28:35,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:28:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052756114] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:35,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:28:35,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-03-08 05:28:35,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816146810] [2025-03-08 05:28:35,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:35,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:28:35,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:35,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:28:35,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-03-08 05:28:35,913 INFO L87 Difference]: Start difference. First operand 38702 states and 75047 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:28:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:43,439 INFO L93 Difference]: Finished difference Result 138045 states and 291899 transitions. [2025-03-08 05:28:43,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 05:28:43,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2025-03-08 05:28:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:44,551 INFO L225 Difference]: With dead ends: 138045 [2025-03-08 05:28:44,551 INFO L226 Difference]: Without dead ends: 99361 [2025-03-08 05:28:45,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-03-08 05:28:45,013 INFO L435 NwaCegarLoop]: 599 mSDtfsCounter, 2580 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 6840 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2758 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 7364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 6840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:45,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2758 Valid, 2468 Invalid, 7364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 6840 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-03-08 05:28:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99361 states. [2025-03-08 05:28:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99361 to 98136. [2025-03-08 05:28:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98136 states, 75898 states have (on average 1.5858784157685315) internal successors, (120365), 78936 states have internal predecessors, (120365), 17064 states have call successors, (17064), 4838 states have call predecessors, (17064), 5173 states have return successors, (64132), 17097 states have call predecessors, (64132), 16998 states have call successors, (64132) [2025-03-08 05:28:50,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98136 states to 98136 states and 201561 transitions. [2025-03-08 05:28:50,407 INFO L78 Accepts]: Start accepts. Automaton has 98136 states and 201561 transitions. Word has length 137 [2025-03-08 05:28:50,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:28:50,407 INFO L471 AbstractCegarLoop]: Abstraction has 98136 states and 201561 transitions. [2025-03-08 05:28:50,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-08 05:28:50,408 INFO L276 IsEmpty]: Start isEmpty. Operand 98136 states and 201561 transitions. [2025-03-08 05:28:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-08 05:28:50,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:28:50,409 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2025-03-08 05:28:50,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:28:50,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:28:50,609 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:28:50,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:28:50,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1289002441, now seen corresponding path program 1 times [2025-03-08 05:28:50,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:28:50,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228795287] [2025-03-08 05:28:50,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:28:50,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:28:50,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-08 05:28:50,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-08 05:28:50,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:28:50,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:28:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-08 05:28:50,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:28:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228795287] [2025-03-08 05:28:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228795287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:28:50,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:28:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:28:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506354051] [2025-03-08 05:28:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:28:50,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:28:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:28:50,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:28:50,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:28:50,692 INFO L87 Difference]: Start difference. First operand 98136 states and 201561 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 05:28:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:28:56,592 INFO L93 Difference]: Finished difference Result 197150 states and 425534 transitions. [2025-03-08 05:28:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:28:56,593 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2025-03-08 05:28:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:28:57,496 INFO L225 Difference]: With dead ends: 197150 [2025-03-08 05:28:57,497 INFO L226 Difference]: Without dead ends: 99032 [2025-03-08 05:28:58,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:28:58,521 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 10 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:28:58,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2652 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:28:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99032 states. [2025-03-08 05:29:02,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99032 to 98712. [2025-03-08 05:29:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98712 states, 76426 states have (on average 1.582458849082773) internal successors, (120941), 79464 states have internal predecessors, (120941), 17064 states have call successors, (17064), 4934 states have call predecessors, (17064), 5221 states have return successors, (64116), 17049 states have call predecessors, (64116), 16998 states have call successors, (64116) [2025-03-08 05:29:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98712 states to 98712 states and 202121 transitions. [2025-03-08 05:29:03,589 INFO L78 Accepts]: Start accepts. Automaton has 98712 states and 202121 transitions. Word has length 109 [2025-03-08 05:29:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:29:03,590 INFO L471 AbstractCegarLoop]: Abstraction has 98712 states and 202121 transitions. [2025-03-08 05:29:03,590 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 05:29:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 98712 states and 202121 transitions. [2025-03-08 05:29:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-08 05:29:03,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:29:03,591 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:29:03,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 05:29:03,591 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:29:03,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:29:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash -112678119, now seen corresponding path program 1 times [2025-03-08 05:29:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:29:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339595318] [2025-03-08 05:29:03,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:29:03,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:29:03,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-08 05:29:03,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-08 05:29:03,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:29:03,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:29:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-03-08 05:29:03,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:29:03,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339595318] [2025-03-08 05:29:03,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339595318] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:29:03,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:29:03,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:29:03,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444823571] [2025-03-08 05:29:03,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:29:03,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:29:03,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:29:03,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:29:03,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:29:03,713 INFO L87 Difference]: Start difference. First operand 98712 states and 202121 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13)