./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product27.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_spec1_product27.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 b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:24:20,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:24:20,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:24:21,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:24:21,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:24:21,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:24:21,027 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:24:21,027 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:24:21,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:24:21,027 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:24:21,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:24:21,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:24:21,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:24:21,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:24:21,028 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:24:21,029 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:24:21,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:24:21,030 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:24:21,030 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:24:21,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:24:21,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:24:21,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:24:21,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:24:21,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:24:21,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:24:21,032 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 -> b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 [2025-03-08 05:24:21,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:24:21,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:24:21,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:24:21,279 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:24:21,280 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:24:21,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2025-03-08 05:24:22,426 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1621acb/9d7749be870948c39f81eaa5de37c451/FLAGe3baa910c [2025-03-08 05:24:22,804 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:24:22,804 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2025-03-08 05:24:22,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1621acb/9d7749be870948c39f81eaa5de37c451/FLAGe3baa910c [2025-03-08 05:24:22,995 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1621acb/9d7749be870948c39f81eaa5de37c451 [2025-03-08 05:24:22,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:24:22,999 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:24:23,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:24:23,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:24:23,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:24:23,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:24:22" (1/1) ... [2025-03-08 05:24:23,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f60f2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23, skipping insertion in model container [2025-03-08 05:24:23,007 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:24:22" (1/1) ... [2025-03-08 05:24:23,058 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:24:23,359 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2025-03-08 05:24:23,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:24:23,468 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:24:23,474 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2025-03-08 05:24:23,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [412] [2025-03-08 05:24:23,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [447] [2025-03-08 05:24:23,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [567] [2025-03-08 05:24:23,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1239] [2025-03-08 05:24:23,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1252] [2025-03-08 05:24:23,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1618] [2025-03-08 05:24:23,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [1627] [2025-03-08 05:24:23,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1813] [2025-03-08 05:24:23,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1905] [2025-03-08 05:24:23,522 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2025-03-08 05:24:23,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:24:23,590 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:24:23,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23 WrapperNode [2025-03-08 05:24:23,592 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:24:23,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:24:23,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:24:23,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:24:23,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,648 INFO L138 Inliner]: procedures = 95, calls = 343, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1148 [2025-03-08 05:24:23,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:24:23,649 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:24:23,649 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:24:23,649 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:24:23,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,697 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-08 05:24:23,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,719 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:24:23,744 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:24:23,744 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:24:23,744 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:24:23,745 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (1/1) ... [2025-03-08 05:24:23,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:24:23,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:23,773 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 05:24:23,777 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 05:24:23,798 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-08 05:24:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-08 05:24:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:24:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-08 05:24:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-08 05:24:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-08 05:24:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-08 05:24:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-08 05:24:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-08 05:24:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-08 05:24:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-08 05:24:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-08 05:24:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-08 05:24:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-08 05:24:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-08 05:24:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-08 05:24:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-08 05:24:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-08 05:24:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-08 05:24:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-08 05:24:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-08 05:24:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-08 05:24:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-08 05:24:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-08 05:24:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-08 05:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-08 05:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-08 05:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-08 05:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-08 05:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-08 05:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-08 05:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-08 05:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-08 05:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-08 05:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-08 05:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-08 05:24:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-08 05:24:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-08 05:24:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-08 05:24:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-08 05:24:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-08 05:24:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-08 05:24:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-08 05:24:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-08 05:24:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-08 05:24:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-08 05:24:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-08 05:24:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:24:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:24:23,807 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-08 05:24:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-08 05:24:23,978 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:24:23,982 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:24:24,040 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L564: #res := ~retValue_acc~6; [2025-03-08 05:24:24,062 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L486: #res := ~retValue_acc~4; [2025-03-08 05:24:24,067 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1979: #res := ~retValue_acc~13; [2025-03-08 05:24:24,077 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2152: #res := ~retValue_acc~14; [2025-03-08 05:24:24,157 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2808: #res#1 := ~retValue_acc~24#1; [2025-03-08 05:24:24,157 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2195-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~16#1; [2025-03-08 05:24:24,162 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L3436: #res := ~retValue_acc~28; [2025-03-08 05:24:24,462 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2689-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~21#1; [2025-03-08 05:24:24,463 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2718: #res#1 := ~retValue_acc~22#1; [2025-03-08 05:24:24,528 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2853: #res := ~retValue_acc~26; [2025-03-08 05:24:24,543 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L525: #res := ~retValue_acc~5; [2025-03-08 05:24:24,587 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2244-1: isEmpty_#res#1 := isEmpty_~retValue_acc~18#1; [2025-03-08 05:24:24,653 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2324-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~19#1; [2025-03-08 05:24:24,654 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2337-1: isIdle_#res#1 := isIdle_~retValue_acc~20#1; [2025-03-08 05:24:24,754 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2839-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~25#1; [2025-03-08 05:24:24,803 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L925: #res := ~retValue_acc~8; [2025-03-08 05:24:24,866 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L444-1: valid_product_#res#1 := valid_product_~retValue_acc~3#1; [2025-03-08 05:24:24,866 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L409-1: main_#res#1 := main_~retValue_acc~1#1; [2025-03-08 05:24:24,874 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L684: #res := ~retValue_acc~7; [2025-03-08 05:24:24,876 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2161: #res := ~retValue_acc~15; [2025-03-08 05:24:24,880 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1236: #res := ~retValue_acc~9; [2025-03-08 05:24:24,999 INFO L? ?]: Removed 461 outVars from TransFormulas that were not future-live. [2025-03-08 05:24:24,999 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:24:25,022 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:24:25,023 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:24:25,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:24:25 BoogieIcfgContainer [2025-03-08 05:24:25,023 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:24:25,026 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:24:25,026 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:24:25,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:24:25,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:24:22" (1/3) ... [2025-03-08 05:24:25,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c51e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:24:25, skipping insertion in model container [2025-03-08 05:24:25,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:24:23" (2/3) ... [2025-03-08 05:24:25,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c51e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:24:25, skipping insertion in model container [2025-03-08 05:24:25,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:24:25" (3/3) ... [2025-03-08 05:24:25,032 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2025-03-08 05:24:25,043 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:24:25,046 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product27.cil.c that has 26 procedures, 574 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:24:25,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:24:25,102 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;@7670257f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:24:25,102 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:24:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 574 states, 448 states have (on average 1.6875) internal successors, (756), 469 states have internal predecessors, (756), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-08 05:24:25,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 05:24:25,126 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:25,127 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:25,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:25,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash -564680716, now seen corresponding path program 1 times [2025-03-08 05:24:25,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:25,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711908191] [2025-03-08 05:24:25,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:25,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:25,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 05:24:25,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 05:24:25,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:25,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:25,616 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711908191] [2025-03-08 05:24:25,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711908191] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192292941] [2025-03-08 05:24:25,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:25,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:25,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:25,624 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 05:24:25,625 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 05:24:25,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 05:24:25,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 05:24:25,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:25,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:25,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 05:24:26,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:26,027 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192292941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:26,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:26,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-08 05:24:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224460977] [2025-03-08 05:24:26,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:26,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 05:24:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:26,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 05:24:26,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:24:26,047 INFO L87 Difference]: Start difference. First operand has 574 states, 448 states have (on average 1.6875) internal successors, (756), 469 states have internal predecessors, (756), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:24:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:26,095 INFO L93 Difference]: Finished difference Result 595 states and 984 transitions. [2025-03-08 05:24:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 05:24:26,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2025-03-08 05:24:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:26,114 INFO L225 Difference]: With dead ends: 595 [2025-03-08 05:24:26,114 INFO L226 Difference]: Without dead ends: 566 [2025-03-08 05:24:26,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:24:26,118 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:26,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-08 05:24:26,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-08 05:24:26,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 442 states have (on average 1.6877828054298643) internal successors, (746), 461 states have internal predecessors, (746), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 939 transitions. [2025-03-08 05:24:26,183 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 939 transitions. Word has length 125 [2025-03-08 05:24:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:26,186 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 939 transitions. [2025-03-08 05:24:26,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:24:26,186 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 939 transitions. [2025-03-08 05:24:26,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-08 05:24:26,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:26,192 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:26,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 05:24:26,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 05:24:26,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:26,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2102165602, now seen corresponding path program 1 times [2025-03-08 05:24:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151473944] [2025-03-08 05:24:26,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:26,424 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-08 05:24:26,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 05:24:26,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:26,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:26,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:26,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151473944] [2025-03-08 05:24:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151473944] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:26,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144748279] [2025-03-08 05:24:26,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:26,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:26,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:26,625 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 05:24:26,628 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 05:24:26,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-08 05:24:26,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 05:24:26,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:26,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:26,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:26,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:27,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:27,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144748279] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:27,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:27,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:24:27,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748772075] [2025-03-08 05:24:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:27,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:27,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:27,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:27,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:27,020 INFO L87 Difference]: Start difference. First operand 566 states and 939 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:27,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:27,096 INFO L93 Difference]: Finished difference Result 1123 states and 1870 transitions. [2025-03-08 05:24:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:24:27,097 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2025-03-08 05:24:27,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:27,101 INFO L225 Difference]: With dead ends: 1123 [2025-03-08 05:24:27,102 INFO L226 Difference]: Without dead ends: 566 [2025-03-08 05:24:27,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:27,107 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 5 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:27,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2775 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-08 05:24:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-08 05:24:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 442 states have (on average 1.6855203619909502) internal successors, (745), 461 states have internal predecessors, (745), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 938 transitions. [2025-03-08 05:24:27,141 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 938 transitions. Word has length 126 [2025-03-08 05:24:27,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:27,142 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 938 transitions. [2025-03-08 05:24:27,142 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 938 transitions. [2025-03-08 05:24:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-08 05:24:27,148 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:27,148 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:27,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 05:24:27,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 05:24:27,349 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:27,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash -65206510, now seen corresponding path program 1 times [2025-03-08 05:24:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:27,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510434626] [2025-03-08 05:24:27,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:27,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:24:27,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:24:27,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:27,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510434626] [2025-03-08 05:24:27,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510434626] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760793441] [2025-03-08 05:24:27,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:27,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:27,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:27,525 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 05:24:27,527 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 05:24:27,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:24:27,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:24:27,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:27,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:27,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:27,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:27,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760793441] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:24:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240822706] [2025-03-08 05:24:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:27,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:27,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:27,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:27,860 INFO L87 Difference]: Start difference. First operand 566 states and 938 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:27,906 INFO L93 Difference]: Finished difference Result 1123 states and 1868 transitions. [2025-03-08 05:24:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:24:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2025-03-08 05:24:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:27,911 INFO L225 Difference]: With dead ends: 1123 [2025-03-08 05:24:27,911 INFO L226 Difference]: Without dead ends: 566 [2025-03-08 05:24:27,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:27,914 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 4 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:27,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2775 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-08 05:24:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-08 05:24:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 442 states have (on average 1.6832579185520362) internal successors, (744), 461 states have internal predecessors, (744), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 937 transitions. [2025-03-08 05:24:27,937 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 937 transitions. Word has length 128 [2025-03-08 05:24:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:27,937 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 937 transitions. [2025-03-08 05:24:27,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:27,937 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 937 transitions. [2025-03-08 05:24:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 05:24:27,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:27,940 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:27,950 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 05:24:28,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:28,141 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:28,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:28,142 INFO L85 PathProgramCache]: Analyzing trace with hash -905110914, now seen corresponding path program 1 times [2025-03-08 05:24:28,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:28,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369618570] [2025-03-08 05:24:28,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:28,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 05:24:28,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 05:24:28,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:28,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:28,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369618570] [2025-03-08 05:24:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369618570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:28,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360420233] [2025-03-08 05:24:28,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:28,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:28,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:28,270 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 05:24:28,271 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 05:24:28,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 05:24:28,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 05:24:28,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:28,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:28,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:28,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:28,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:28,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360420233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:28,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:28,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:24:28,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921147362] [2025-03-08 05:24:28,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:28,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:28,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:28,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:28,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:28,642 INFO L87 Difference]: Start difference. First operand 566 states and 937 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:28,719 INFO L93 Difference]: Finished difference Result 1130 states and 1875 transitions. [2025-03-08 05:24:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:28,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2025-03-08 05:24:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:28,723 INFO L225 Difference]: With dead ends: 1130 [2025-03-08 05:24:28,723 INFO L226 Difference]: Without dead ends: 575 [2025-03-08 05:24:28,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:28,726 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 13 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:28,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2772 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:28,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-08 05:24:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-08 05:24:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 450 states have (on average 1.68) internal successors, (756), 469 states have internal predecessors, (756), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 949 transitions. [2025-03-08 05:24:28,750 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 949 transitions. Word has length 130 [2025-03-08 05:24:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:28,751 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 949 transitions. [2025-03-08 05:24:28,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 949 transitions. [2025-03-08 05:24:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-08 05:24:28,753 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:28,753 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:28,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:28,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:28,954 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:28,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash 435395853, now seen corresponding path program 1 times [2025-03-08 05:24:28,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:28,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12182881] [2025-03-08 05:24:28,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:28,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-08 05:24:28,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 05:24:28,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:28,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:29,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:29,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12182881] [2025-03-08 05:24:29,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12182881] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:29,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522275738] [2025-03-08 05:24:29,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:29,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:29,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:29,080 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:29,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 05:24:29,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-08 05:24:29,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 05:24:29,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:29,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:29,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:29,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:29,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:29,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522275738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:29,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:29,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:24:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814345792] [2025-03-08 05:24:29,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:29,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:29,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:29,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:29,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:29,377 INFO L87 Difference]: Start difference. First operand 575 states and 949 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:29,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:29,430 INFO L93 Difference]: Finished difference Result 1132 states and 1876 transitions. [2025-03-08 05:24:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:29,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2025-03-08 05:24:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:29,433 INFO L225 Difference]: With dead ends: 1132 [2025-03-08 05:24:29,433 INFO L226 Difference]: Without dead ends: 575 [2025-03-08 05:24:29,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:29,437 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 11 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:29,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2772 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:29,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-08 05:24:29,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-08 05:24:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 450 states have (on average 1.6777777777777778) internal successors, (755), 469 states have internal predecessors, (755), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 948 transitions. [2025-03-08 05:24:29,459 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 948 transitions. Word has length 131 [2025-03-08 05:24:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:29,459 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 948 transitions. [2025-03-08 05:24:29,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 948 transitions. [2025-03-08 05:24:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-08 05:24:29,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:29,461 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:29,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:29,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:29,662 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:29,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1550369861, now seen corresponding path program 1 times [2025-03-08 05:24:29,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:29,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485230779] [2025-03-08 05:24:29,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:29,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:29,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 05:24:29,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 05:24:29,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:29,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:29,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485230779] [2025-03-08 05:24:29,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485230779] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:29,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915430923] [2025-03-08 05:24:29,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:29,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:29,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:29,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:29,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 05:24:29,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 05:24:30,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 05:24:30,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:30,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:30,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:30,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:30,068 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:30,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915430923] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:30,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:30,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:24:30,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977169749] [2025-03-08 05:24:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:30,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:30,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:30,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:30,069 INFO L87 Difference]: Start difference. First operand 575 states and 948 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:30,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:30,121 INFO L93 Difference]: Finished difference Result 1132 states and 1875 transitions. [2025-03-08 05:24:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:30,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2025-03-08 05:24:30,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:30,126 INFO L225 Difference]: With dead ends: 1132 [2025-03-08 05:24:30,126 INFO L226 Difference]: Without dead ends: 575 [2025-03-08 05:24:30,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:30,129 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 10 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:30,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2772 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-08 05:24:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-08 05:24:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 450 states have (on average 1.6755555555555555) internal successors, (754), 469 states have internal predecessors, (754), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:30,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 947 transitions. [2025-03-08 05:24:30,148 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 947 transitions. Word has length 132 [2025-03-08 05:24:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:30,148 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 947 transitions. [2025-03-08 05:24:30,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 947 transitions. [2025-03-08 05:24:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-08 05:24:30,151 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:30,151 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:30,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 05:24:30,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:30,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:30,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 723599914, now seen corresponding path program 1 times [2025-03-08 05:24:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457118742] [2025-03-08 05:24:30,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:30,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-08 05:24:30,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-08 05:24:30,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:30,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:30,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:30,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457118742] [2025-03-08 05:24:30,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457118742] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:30,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341434404] [2025-03-08 05:24:30,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:30,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:30,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:30,500 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:30,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 05:24:30,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-08 05:24:30,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-08 05:24:30,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:30,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:30,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:30,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:24:30,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:30,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341434404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:30,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:30,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-08 05:24:30,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355905781] [2025-03-08 05:24:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:30,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:30,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:30,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:30,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:30,820 INFO L87 Difference]: Start difference. First operand 575 states and 947 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:30,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:30,926 INFO L93 Difference]: Finished difference Result 1158 states and 1922 transitions. [2025-03-08 05:24:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:24:30,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2025-03-08 05:24:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:30,930 INFO L225 Difference]: With dead ends: 1158 [2025-03-08 05:24:30,931 INFO L226 Difference]: Without dead ends: 590 [2025-03-08 05:24:30,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:30,933 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 76 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:30,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2663 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-03-08 05:24:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 575. [2025-03-08 05:24:30,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 450 states have (on average 1.6644444444444444) internal successors, (749), 469 states have internal predecessors, (749), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:30,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 942 transitions. [2025-03-08 05:24:30,949 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 942 transitions. Word has length 133 [2025-03-08 05:24:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:30,949 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 942 transitions. [2025-03-08 05:24:30,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 942 transitions. [2025-03-08 05:24:30,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-08 05:24:30,952 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:30,952 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:30,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:31,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:31,153 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:31,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash 65012606, now seen corresponding path program 1 times [2025-03-08 05:24:31,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:31,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576414098] [2025-03-08 05:24:31,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:31,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 05:24:31,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 05:24:31,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:31,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576414098] [2025-03-08 05:24:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576414098] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930036835] [2025-03-08 05:24:31,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:31,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:31,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:31,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:31,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 05:24:31,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 05:24:31,556 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 05:24:31,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:31,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:31,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:31,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:24:31,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:31,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930036835] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:31,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:31,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-08 05:24:31,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327673827] [2025-03-08 05:24:31,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:31,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:31,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:31,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:31,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:31,605 INFO L87 Difference]: Start difference. First operand 575 states and 942 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:31,711 INFO L93 Difference]: Finished difference Result 1158 states and 1912 transitions. [2025-03-08 05:24:31,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:24:31,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2025-03-08 05:24:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:31,722 INFO L225 Difference]: With dead ends: 1158 [2025-03-08 05:24:31,722 INFO L226 Difference]: Without dead ends: 590 [2025-03-08 05:24:31,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:31,725 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 75 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:31,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2663 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2025-03-08 05:24:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 575. [2025-03-08 05:24:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 450 states have (on average 1.6533333333333333) internal successors, (744), 469 states have internal predecessors, (744), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 937 transitions. [2025-03-08 05:24:31,748 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 937 transitions. Word has length 135 [2025-03-08 05:24:31,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:31,748 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 937 transitions. [2025-03-08 05:24:31,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 937 transitions. [2025-03-08 05:24:31,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-08 05:24:31,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:31,752 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:31,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:31,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-08 05:24:31,952 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:31,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:31,953 INFO L85 PathProgramCache]: Analyzing trace with hash -275327414, now seen corresponding path program 1 times [2025-03-08 05:24:31,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:31,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314144339] [2025-03-08 05:24:31,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:31,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 05:24:31,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 05:24:31,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:31,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:32,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:32,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314144339] [2025-03-08 05:24:32,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314144339] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:32,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607363910] [2025-03-08 05:24:32,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:32,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:32,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:32,124 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:32,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 05:24:32,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 05:24:32,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 05:24:32,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:32,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:32,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:32,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:24:32,431 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:32,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607363910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:32,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:32,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-08 05:24:32,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045516776] [2025-03-08 05:24:32,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:32,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:32,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:32,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:32,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:32,433 INFO L87 Difference]: Start difference. First operand 575 states and 937 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:32,599 INFO L93 Difference]: Finished difference Result 1209 states and 1985 transitions. [2025-03-08 05:24:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:32,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2025-03-08 05:24:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:32,603 INFO L225 Difference]: With dead ends: 1209 [2025-03-08 05:24:32,603 INFO L226 Difference]: Without dead ends: 656 [2025-03-08 05:24:32,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:32,605 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 130 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:32,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2694 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2025-03-08 05:24:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 626. [2025-03-08 05:24:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 500 states have (on average 1.658) internal successors, (829), 519 states have internal predecessors, (829), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1022 transitions. [2025-03-08 05:24:32,626 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1022 transitions. Word has length 137 [2025-03-08 05:24:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:32,626 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 1022 transitions. [2025-03-08 05:24:32,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1022 transitions. [2025-03-08 05:24:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 05:24:32,629 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:32,629 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:32,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 05:24:32,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:32,830 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:32,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:32,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1580431334, now seen corresponding path program 1 times [2025-03-08 05:24:32,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:32,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870625807] [2025-03-08 05:24:32,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:32,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:24:32,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:24:32,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:32,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:32,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870625807] [2025-03-08 05:24:32,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870625807] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344810960] [2025-03-08 05:24:32,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:32,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:32,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:32,983 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:32,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 05:24:33,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:24:33,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:24:33,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:33,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:33,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:33,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:33,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:24:33,272 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344810960] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:33,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:33,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-08 05:24:33,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575362398] [2025-03-08 05:24:33,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:33,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:33,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:33,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:33,273 INFO L87 Difference]: Start difference. First operand 626 states and 1022 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:33,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:33,408 INFO L93 Difference]: Finished difference Result 1224 states and 2009 transitions. [2025-03-08 05:24:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:33,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2025-03-08 05:24:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:33,412 INFO L225 Difference]: With dead ends: 1224 [2025-03-08 05:24:33,412 INFO L226 Difference]: Without dead ends: 656 [2025-03-08 05:24:33,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:33,414 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 124 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:33,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2667 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2025-03-08 05:24:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 626. [2025-03-08 05:24:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 500 states have (on average 1.648) internal successors, (824), 519 states have internal predecessors, (824), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:24:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1017 transitions. [2025-03-08 05:24:33,432 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1017 transitions. Word has length 138 [2025-03-08 05:24:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:33,432 INFO L471 AbstractCegarLoop]: Abstraction has 626 states and 1017 transitions. [2025-03-08 05:24:33,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:33,432 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1017 transitions. [2025-03-08 05:24:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 05:24:33,436 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:33,436 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:33,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:33,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 05:24:33,637 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:33,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:33,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1967148438, now seen corresponding path program 1 times [2025-03-08 05:24:33,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:33,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232427838] [2025-03-08 05:24:33,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:33,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:24:33,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:24:33,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:33,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232427838] [2025-03-08 05:24:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232427838] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713529984] [2025-03-08 05:24:33,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:33,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:33,769 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:33,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 05:24:33,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:24:34,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:24:34,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:34,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:34,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:24:34,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:24:34,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:34,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713529984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:34,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:34,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-08 05:24:34,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398059948] [2025-03-08 05:24:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:34,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:24:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:34,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:24:34,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:34,094 INFO L87 Difference]: Start difference. First operand 626 states and 1017 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:34,203 INFO L93 Difference]: Finished difference Result 1217 states and 1989 transitions. [2025-03-08 05:24:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:24:34,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2025-03-08 05:24:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:34,207 INFO L225 Difference]: With dead ends: 1217 [2025-03-08 05:24:34,207 INFO L226 Difference]: Without dead ends: 664 [2025-03-08 05:24:34,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:24:34,210 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 113 mSDsluCounter, 5353 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6260 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:34,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6260 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2025-03-08 05:24:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 645. [2025-03-08 05:24:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 516 states have (on average 1.6472868217054264) internal successors, (850), 537 states have internal predecessors, (850), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (97), 93 states have call predecessors, (97), 95 states have call successors, (97) [2025-03-08 05:24:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1047 transitions. [2025-03-08 05:24:34,226 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1047 transitions. Word has length 138 [2025-03-08 05:24:34,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:34,227 INFO L471 AbstractCegarLoop]: Abstraction has 645 states and 1047 transitions. [2025-03-08 05:24:34,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:34,227 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1047 transitions. [2025-03-08 05:24:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 05:24:34,229 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:34,229 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:34,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:34,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 05:24:34,433 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:34,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash 424358763, now seen corresponding path program 1 times [2025-03-08 05:24:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:34,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944996415] [2025-03-08 05:24:34,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:34,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:24:34,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:24:34,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:34,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:34,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:34,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944996415] [2025-03-08 05:24:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944996415] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:34,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764273449] [2025-03-08 05:24:34,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:34,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:34,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:34,501 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:34,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 05:24:34,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:24:34,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:24:34,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:34,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:34,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:24:34,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:34,860 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:34,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764273449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:34,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:34,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 05:24:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45283385] [2025-03-08 05:24:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:34,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:34,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:34,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:34,861 INFO L87 Difference]: Start difference. First operand 645 states and 1047 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:34,945 INFO L93 Difference]: Finished difference Result 1155 states and 1889 transitions. [2025-03-08 05:24:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:24:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2025-03-08 05:24:34,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:34,952 INFO L225 Difference]: With dead ends: 1155 [2025-03-08 05:24:34,952 INFO L226 Difference]: Without dead ends: 669 [2025-03-08 05:24:34,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:34,968 INFO L435 NwaCegarLoop]: 920 mSDtfsCounter, 86 mSDsluCounter, 4521 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5441 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:34,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5441 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-03-08 05:24:34,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 664. [2025-03-08 05:24:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 532 states have (on average 1.6466165413533835) internal successors, (876), 555 states have internal predecessors, (876), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:24:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1077 transitions. [2025-03-08 05:24:34,989 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1077 transitions. Word has length 138 [2025-03-08 05:24:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:34,989 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1077 transitions. [2025-03-08 05:24:34,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1077 transitions. [2025-03-08 05:24:34,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 05:24:34,991 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:34,991 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:35,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-08 05:24:35,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 05:24:35,192 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:35,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash -328820652, now seen corresponding path program 1 times [2025-03-08 05:24:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:35,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924364999] [2025-03-08 05:24:35,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:35,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:24:35,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:24:35,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:35,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:35,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924364999] [2025-03-08 05:24:35,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924364999] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:35,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269252394] [2025-03-08 05:24:35,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:35,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:35,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:35,259 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:35,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 05:24:35,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:24:35,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:24:35,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:35,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:35,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:35,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 05:24:35,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:35,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269252394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:35,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:35,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:24:35,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364564292] [2025-03-08 05:24:35,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:35,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:35,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:35,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:35,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:35,556 INFO L87 Difference]: Start difference. First operand 664 states and 1077 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:35,602 INFO L93 Difference]: Finished difference Result 1222 states and 1999 transitions. [2025-03-08 05:24:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2025-03-08 05:24:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:35,607 INFO L225 Difference]: With dead ends: 1222 [2025-03-08 05:24:35,607 INFO L226 Difference]: Without dead ends: 664 [2025-03-08 05:24:35,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:35,609 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 13 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:35,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2741 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2025-03-08 05:24:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2025-03-08 05:24:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 532 states have (on average 1.6390977443609023) internal successors, (872), 555 states have internal predecessors, (872), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:24:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1073 transitions. [2025-03-08 05:24:35,626 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1073 transitions. Word has length 139 [2025-03-08 05:24:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:35,626 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1073 transitions. [2025-03-08 05:24:35,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:24:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1073 transitions. [2025-03-08 05:24:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 05:24:35,629 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:35,630 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:35,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:35,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 05:24:35,830 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:35,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash -870582498, now seen corresponding path program 1 times [2025-03-08 05:24:35,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:35,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699780304] [2025-03-08 05:24:35,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:35,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:35,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:24:35,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:24:35,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:35,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:35,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:35,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699780304] [2025-03-08 05:24:35,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699780304] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:35,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836555349] [2025-03-08 05:24:35,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:35,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:35,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:35,907 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:35,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 05:24:36,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:24:36,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:24:36,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:36,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:36,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:24:36,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:36,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:36,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836555349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:36,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:36,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 05:24:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228865120] [2025-03-08 05:24:36,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:36,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:36,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:36,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:36,234 INFO L87 Difference]: Start difference. First operand 664 states and 1073 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:36,296 INFO L93 Difference]: Finished difference Result 1185 states and 1936 transitions. [2025-03-08 05:24:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:24:36,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2025-03-08 05:24:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:36,301 INFO L225 Difference]: With dead ends: 1185 [2025-03-08 05:24:36,301 INFO L226 Difference]: Without dead ends: 699 [2025-03-08 05:24:36,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:36,303 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 95 mSDsluCounter, 4488 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5402 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:36,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5402 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2025-03-08 05:24:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 664. [2025-03-08 05:24:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 532 states have (on average 1.6390977443609023) internal successors, (872), 555 states have internal predecessors, (872), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:24:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1073 transitions. [2025-03-08 05:24:36,320 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1073 transitions. Word has length 139 [2025-03-08 05:24:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:36,320 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1073 transitions. [2025-03-08 05:24:36,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1073 transitions. [2025-03-08 05:24:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 05:24:36,322 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:36,323 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:36,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:36,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:36,527 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:36,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1414691663, now seen corresponding path program 1 times [2025-03-08 05:24:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:36,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634020717] [2025-03-08 05:24:36,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:36,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:24:36,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:24:36,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:36,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634020717] [2025-03-08 05:24:36,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634020717] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:36,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830110779] [2025-03-08 05:24:36,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:36,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:36,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:36,593 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:36,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 05:24:36,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:24:36,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:24:36,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:36,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:36,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:24:36,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:36,908 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:36,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830110779] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:36,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:36,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-08 05:24:36,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839153153] [2025-03-08 05:24:36,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:36,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:24:36,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:36,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:24:36,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:36,910 INFO L87 Difference]: Start difference. First operand 664 states and 1073 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:37,018 INFO L93 Difference]: Finished difference Result 1170 states and 1910 transitions. [2025-03-08 05:24:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:24:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2025-03-08 05:24:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:37,023 INFO L225 Difference]: With dead ends: 1170 [2025-03-08 05:24:37,024 INFO L226 Difference]: Without dead ends: 684 [2025-03-08 05:24:37,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:24:37,027 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 113 mSDsluCounter, 5331 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:37,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6234 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-08 05:24:37,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 664. [2025-03-08 05:24:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 532 states have (on average 1.6390977443609023) internal successors, (872), 555 states have internal predecessors, (872), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:24:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1073 transitions. [2025-03-08 05:24:37,045 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1073 transitions. Word has length 139 [2025-03-08 05:24:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:37,045 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1073 transitions. [2025-03-08 05:24:37,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:37,046 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1073 transitions. [2025-03-08 05:24:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 05:24:37,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:37,049 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:37,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-08 05:24:37,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 05:24:37,250 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:37,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1145331646, now seen corresponding path program 1 times [2025-03-08 05:24:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191048878] [2025-03-08 05:24:37,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:37,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 05:24:37,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 05:24:37,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:37,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191048878] [2025-03-08 05:24:37,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191048878] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:37,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018346454] [2025-03-08 05:24:37,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:37,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:37,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:37,350 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:37,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 05:24:37,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 05:24:37,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 05:24:37,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:37,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:37,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:24:37,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:24:37,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018346454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-08 05:24:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527642693] [2025-03-08 05:24:37,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:37,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:24:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:37,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:24:37,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:37,716 INFO L87 Difference]: Start difference. First operand 664 states and 1073 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:37,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:37,826 INFO L93 Difference]: Finished difference Result 1170 states and 1911 transitions. [2025-03-08 05:24:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:24:37,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2025-03-08 05:24:37,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:37,832 INFO L225 Difference]: With dead ends: 1170 [2025-03-08 05:24:37,832 INFO L226 Difference]: Without dead ends: 684 [2025-03-08 05:24:37,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:24:37,836 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 121 mSDsluCounter, 5321 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6224 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:37,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6224 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-08 05:24:37,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 664. [2025-03-08 05:24:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 532 states have (on average 1.6390977443609023) internal successors, (872), 555 states have internal predecessors, (872), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:24:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1073 transitions. [2025-03-08 05:24:37,855 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1073 transitions. Word has length 140 [2025-03-08 05:24:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:37,855 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1073 transitions. [2025-03-08 05:24:37,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:24:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1073 transitions. [2025-03-08 05:24:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-08 05:24:37,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:37,859 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:37,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:38,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 05:24:38,059 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:38,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1852612696, now seen corresponding path program 1 times [2025-03-08 05:24:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:38,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917711671] [2025-03-08 05:24:38,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:38,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:38,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-08 05:24:38,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-08 05:24:38,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:38,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:24:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917711671] [2025-03-08 05:24:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917711671] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:38,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441786086] [2025-03-08 05:24:38,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:38,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:38,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:38,128 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:38,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 05:24:38,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-08 05:24:38,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-08 05:24:38,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:38,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:38,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:38,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:38,476 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:38,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441786086] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:38,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:38,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:24:38,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4664394] [2025-03-08 05:24:38,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:38,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:38,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:38,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:38,477 INFO L87 Difference]: Start difference. First operand 664 states and 1073 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:38,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:38,860 INFO L93 Difference]: Finished difference Result 1153 states and 1905 transitions. [2025-03-08 05:24:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:38,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2025-03-08 05:24:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:38,865 INFO L225 Difference]: With dead ends: 1153 [2025-03-08 05:24:38,865 INFO L226 Difference]: Without dead ends: 672 [2025-03-08 05:24:38,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:38,883 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 870 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:38,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 2341 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:24:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2025-03-08 05:24:38,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2025-03-08 05:24:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 539 states have (on average 1.6400742115027829) internal successors, (884), 562 states have internal predecessors, (884), 101 states have call successors, (101), 28 states have call predecessors, (101), 31 states have return successors, (101), 94 states have call predecessors, (101), 96 states have call successors, (101) [2025-03-08 05:24:38,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1086 transitions. [2025-03-08 05:24:38,899 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1086 transitions. Word has length 141 [2025-03-08 05:24:38,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:38,899 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 1086 transitions. [2025-03-08 05:24:38,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1086 transitions. [2025-03-08 05:24:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 05:24:38,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:38,902 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:38,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:39,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 05:24:39,103 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:39,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1594395234, now seen corresponding path program 1 times [2025-03-08 05:24:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:39,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947616949] [2025-03-08 05:24:39,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:39,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:39,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 05:24:39,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 05:24:39,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:39,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:24:39,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:39,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947616949] [2025-03-08 05:24:39,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947616949] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:39,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975464517] [2025-03-08 05:24:39,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:39,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:39,169 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:39,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 05:24:39,294 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 05:24:39,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 05:24:39,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:39,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:39,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:39,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:39,512 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:39,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975464517] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:39,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:39,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:24:39,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482817082] [2025-03-08 05:24:39,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:39,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:39,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:39,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:39,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:39,513 INFO L87 Difference]: Start difference. First operand 672 states and 1086 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:39,884 INFO L93 Difference]: Finished difference Result 1169 states and 1928 transitions. [2025-03-08 05:24:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:39,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2025-03-08 05:24:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:39,889 INFO L225 Difference]: With dead ends: 1169 [2025-03-08 05:24:39,889 INFO L226 Difference]: Without dead ends: 680 [2025-03-08 05:24:39,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:39,893 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 871 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:39,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 2338 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:24:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2025-03-08 05:24:39,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2025-03-08 05:24:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 546 states have (on average 1.641025641025641) internal successors, (896), 569 states have internal predecessors, (896), 101 states have call successors, (101), 29 states have call predecessors, (101), 32 states have return successors, (102), 94 states have call predecessors, (102), 96 states have call successors, (102) [2025-03-08 05:24:39,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1099 transitions. [2025-03-08 05:24:39,912 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1099 transitions. Word has length 143 [2025-03-08 05:24:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:39,912 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1099 transitions. [2025-03-08 05:24:39,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:39,913 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1099 transitions. [2025-03-08 05:24:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-08 05:24:39,915 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:39,915 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:39,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:40,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 05:24:40,116 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:40,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1550333496, now seen corresponding path program 1 times [2025-03-08 05:24:40,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:40,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718284410] [2025-03-08 05:24:40,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:40,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:40,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-08 05:24:40,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-08 05:24:40,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:40,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:40,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:40,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718284410] [2025-03-08 05:24:40,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718284410] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:40,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168308233] [2025-03-08 05:24:40,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:40,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:40,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:40,177 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:40,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 05:24:40,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-08 05:24:40,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-08 05:24:40,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:40,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:40,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:40,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:40,597 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:40,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:40,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168308233] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:40,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:40,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:24:40,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860711599] [2025-03-08 05:24:40,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:40,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:40,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:40,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:40,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:40,600 INFO L87 Difference]: Start difference. First operand 680 states and 1099 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:41,028 INFO L93 Difference]: Finished difference Result 1185 states and 1951 transitions. [2025-03-08 05:24:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:41,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2025-03-08 05:24:41,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:41,034 INFO L225 Difference]: With dead ends: 1185 [2025-03-08 05:24:41,035 INFO L226 Difference]: Without dead ends: 688 [2025-03-08 05:24:41,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:41,037 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 863 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:41,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 2335 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 05:24:41,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2025-03-08 05:24:41,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2025-03-08 05:24:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 553 states have (on average 1.6419529837251357) internal successors, (908), 576 states have internal predecessors, (908), 101 states have call successors, (101), 30 states have call predecessors, (101), 33 states have return successors, (103), 94 states have call predecessors, (103), 96 states have call successors, (103) [2025-03-08 05:24:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1112 transitions. [2025-03-08 05:24:41,055 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1112 transitions. Word has length 145 [2025-03-08 05:24:41,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:41,055 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1112 transitions. [2025-03-08 05:24:41,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1112 transitions. [2025-03-08 05:24:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-08 05:24:41,059 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:41,059 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:41,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-08 05:24:41,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:41,259 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:41,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1727806940, now seen corresponding path program 1 times [2025-03-08 05:24:41,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:41,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992558346] [2025-03-08 05:24:41,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:41,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:41,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-08 05:24:41,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-08 05:24:41,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:41,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:24:41,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:41,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992558346] [2025-03-08 05:24:41,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992558346] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:41,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262358681] [2025-03-08 05:24:41,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:41,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:41,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:41,326 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:41,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-08 05:24:41,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-08 05:24:41,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-08 05:24:41,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:41,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:41,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:41,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:41,694 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:41,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262358681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:41,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:41,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:24:41,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439500135] [2025-03-08 05:24:41,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:41,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:41,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:41,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:41,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:41,696 INFO L87 Difference]: Start difference. First operand 688 states and 1112 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:42,045 INFO L93 Difference]: Finished difference Result 1201 states and 1974 transitions. [2025-03-08 05:24:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:42,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2025-03-08 05:24:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:42,050 INFO L225 Difference]: With dead ends: 1201 [2025-03-08 05:24:42,050 INFO L226 Difference]: Without dead ends: 696 [2025-03-08 05:24:42,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:42,052 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 858 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:42,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2332 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:24:42,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2025-03-08 05:24:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2025-03-08 05:24:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 560 states have (on average 1.6428571428571428) internal successors, (920), 583 states have internal predecessors, (920), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-08 05:24:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1125 transitions. [2025-03-08 05:24:42,069 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1125 transitions. Word has length 147 [2025-03-08 05:24:42,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:42,069 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 1125 transitions. [2025-03-08 05:24:42,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:42,069 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1125 transitions. [2025-03-08 05:24:42,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-08 05:24:42,071 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:42,071 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:42,080 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-08 05:24:42,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:42,272 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:42,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 151917976, now seen corresponding path program 1 times [2025-03-08 05:24:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916724255] [2025-03-08 05:24:42,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:42,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-08 05:24:42,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-08 05:24:42,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:42,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:42,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916724255] [2025-03-08 05:24:42,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916724255] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:42,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099957325] [2025-03-08 05:24:42,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:42,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:42,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:42,355 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:42,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-08 05:24:42,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-08 05:24:42,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-08 05:24:42,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:42,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:42,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:42,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:42,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:42,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099957325] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:42,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:42,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:24:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061802425] [2025-03-08 05:24:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:42,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:42,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:42,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:42,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:42,769 INFO L87 Difference]: Start difference. First operand 696 states and 1125 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:24:43,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:43,004 INFO L93 Difference]: Finished difference Result 743 states and 1195 transitions. [2025-03-08 05:24:43,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:43,005 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 149 [2025-03-08 05:24:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:43,009 INFO L225 Difference]: With dead ends: 743 [2025-03-08 05:24:43,009 INFO L226 Difference]: Without dead ends: 728 [2025-03-08 05:24:43,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:43,010 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 848 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:43,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1673 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 05:24:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2025-03-08 05:24:43,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 698. [2025-03-08 05:24:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 562 states have (on average 1.6405693950177935) internal successors, (922), 585 states have internal predecessors, (922), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-08 05:24:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1127 transitions. [2025-03-08 05:24:43,027 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1127 transitions. Word has length 149 [2025-03-08 05:24:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:43,027 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1127 transitions. [2025-03-08 05:24:43,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:24:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1127 transitions. [2025-03-08 05:24:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 05:24:43,029 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:43,030 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:43,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-08 05:24:43,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:43,231 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:43,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:43,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1757796470, now seen corresponding path program 1 times [2025-03-08 05:24:43,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:43,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223906975] [2025-03-08 05:24:43,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:43,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:43,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 05:24:43,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 05:24:43,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:43,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223906975] [2025-03-08 05:24:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223906975] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942624962] [2025-03-08 05:24:43,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:43,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:43,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:43,299 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:43,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-08 05:24:43,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 05:24:43,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 05:24:43,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:43,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:43,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:24:43,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:43,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:43,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942624962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:43,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:43,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-08 05:24:43,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318483591] [2025-03-08 05:24:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:43,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:43,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:43,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:43,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:43,599 INFO L87 Difference]: Start difference. First operand 698 states and 1127 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 05:24:43,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:43,617 INFO L93 Difference]: Finished difference Result 713 states and 1145 transitions. [2025-03-08 05:24:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:43,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 155 [2025-03-08 05:24:43,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:43,621 INFO L225 Difference]: With dead ends: 713 [2025-03-08 05:24:43,621 INFO L226 Difference]: Without dead ends: 698 [2025-03-08 05:24:43,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:43,624 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 0 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:43,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3684 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2025-03-08 05:24:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2025-03-08 05:24:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 562 states have (on average 1.6387900355871887) internal successors, (921), 585 states have internal predecessors, (921), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-08 05:24:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1126 transitions. [2025-03-08 05:24:43,645 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1126 transitions. Word has length 155 [2025-03-08 05:24:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:43,647 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1126 transitions. [2025-03-08 05:24:43,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 05:24:43,647 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1126 transitions. [2025-03-08 05:24:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 05:24:43,649 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:43,649 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:43,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:43,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:43,850 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:43,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:43,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1084091178, now seen corresponding path program 1 times [2025-03-08 05:24:43,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:43,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960726525] [2025-03-08 05:24:43,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:43,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:43,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 05:24:43,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 05:24:43,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:43,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:43,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:43,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960726525] [2025-03-08 05:24:43,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960726525] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:43,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365816232] [2025-03-08 05:24:43,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:43,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:43,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:43,939 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:43,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-08 05:24:44,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 05:24:44,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 05:24:44,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:44,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:44,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:24:44,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 05:24:44,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:44,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365816232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:44,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:44,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-08 05:24:44,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363297704] [2025-03-08 05:24:44,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:44,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:44,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:44,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:44,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:24:44,210 INFO L87 Difference]: Start difference. First operand 698 states and 1126 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:44,247 INFO L93 Difference]: Finished difference Result 1370 states and 2222 transitions. [2025-03-08 05:24:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:44,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2025-03-08 05:24:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:44,251 INFO L225 Difference]: With dead ends: 1370 [2025-03-08 05:24:44,251 INFO L226 Difference]: Without dead ends: 673 [2025-03-08 05:24:44,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 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 05:24:44,253 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 7 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:44,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2741 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2025-03-08 05:24:44,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2025-03-08 05:24:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 540 states have (on average 1.635185185185185) internal successors, (883), 561 states have internal predecessors, (883), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1084 transitions. [2025-03-08 05:24:44,274 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1084 transitions. Word has length 165 [2025-03-08 05:24:44,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:44,274 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1084 transitions. [2025-03-08 05:24:44,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1084 transitions. [2025-03-08 05:24:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-08 05:24:44,277 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:44,277 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:44,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-08 05:24:44,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:44,478 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:44,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1902796142, now seen corresponding path program 1 times [2025-03-08 05:24:44,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:44,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214593154] [2025-03-08 05:24:44,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:44,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:44,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 05:24:44,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 05:24:44,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:44,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:24:44,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214593154] [2025-03-08 05:24:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214593154] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767720351] [2025-03-08 05:24:44,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:44,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:44,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:44,639 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:44,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-08 05:24:44,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 05:24:44,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 05:24:44,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:44,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:44,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:24:44,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-08 05:24:44,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767720351] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-08 05:24:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117394407] [2025-03-08 05:24:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:44,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:44,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:44,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:44,982 INFO L87 Difference]: Start difference. First operand 673 states and 1084 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:45,024 INFO L93 Difference]: Finished difference Result 1300 states and 2115 transitions. [2025-03-08 05:24:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:24:45,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2025-03-08 05:24:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:45,029 INFO L225 Difference]: With dead ends: 1300 [2025-03-08 05:24:45,029 INFO L226 Difference]: Without dead ends: 691 [2025-03-08 05:24:45,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:45,031 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 7 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:45,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2711 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:45,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2025-03-08 05:24:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2025-03-08 05:24:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 558 states have (on average 1.618279569892473) internal successors, (903), 579 states have internal predecessors, (903), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1104 transitions. [2025-03-08 05:24:45,054 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1104 transitions. Word has length 166 [2025-03-08 05:24:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:45,054 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1104 transitions. [2025-03-08 05:24:45,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:45,055 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1104 transitions. [2025-03-08 05:24:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 05:24:45,057 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:45,057 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:45,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-08 05:24:45,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:45,259 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:45,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash 939836943, now seen corresponding path program 1 times [2025-03-08 05:24:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110911171] [2025-03-08 05:24:45,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:45,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:45,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:24:45,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:24:45,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:45,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:24:45,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:45,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110911171] [2025-03-08 05:24:45,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110911171] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:45,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490227349] [2025-03-08 05:24:45,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:45,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:45,367 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:45,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-08 05:24:45,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:24:45,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:24:45,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:45,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:45,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 05:24:45,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:45,690 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:45,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:45,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490227349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:45,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:45,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-08 05:24:45,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913208015] [2025-03-08 05:24:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:45,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:45,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:45,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:45,693 INFO L87 Difference]: Start difference. First operand 691 states and 1104 transitions. Second operand has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:45,755 INFO L93 Difference]: Finished difference Result 1351 states and 2172 transitions. [2025-03-08 05:24:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:24:45,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 167 [2025-03-08 05:24:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:45,760 INFO L225 Difference]: With dead ends: 1351 [2025-03-08 05:24:45,761 INFO L226 Difference]: Without dead ends: 691 [2025-03-08 05:24:45,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 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 05:24:45,763 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 119 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:45,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5478 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:45,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2025-03-08 05:24:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 670. [2025-03-08 05:24:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 537 states have (on average 1.6182495344506518) internal successors, (869), 558 states have internal predecessors, (869), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1070 transitions. [2025-03-08 05:24:45,782 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1070 transitions. Word has length 167 [2025-03-08 05:24:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:45,782 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 1070 transitions. [2025-03-08 05:24:45,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1070 transitions. [2025-03-08 05:24:45,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-08 05:24:45,784 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:45,784 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:45,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:45,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-08 05:24:45,985 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:45,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash 599352379, now seen corresponding path program 1 times [2025-03-08 05:24:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:45,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852106502] [2025-03-08 05:24:45,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:45,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:46,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 05:24:46,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 05:24:46,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:46,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852106502] [2025-03-08 05:24:46,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852106502] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313892536] [2025-03-08 05:24:46,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:46,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:46,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:46,109 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:46,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-08 05:24:46,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 05:24:46,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 05:24:46,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:46,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:46,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 1939 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:46,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:46,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313892536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 05:24:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910216763] [2025-03-08 05:24:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:46,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:46,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:46,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:46,429 INFO L87 Difference]: Start difference. First operand 670 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:46,493 INFO L93 Difference]: Finished difference Result 1333 states and 2142 transitions. [2025-03-08 05:24:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:46,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2025-03-08 05:24:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:46,499 INFO L225 Difference]: With dead ends: 1333 [2025-03-08 05:24:46,499 INFO L226 Difference]: Without dead ends: 694 [2025-03-08 05:24:46,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:46,501 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 128 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:46,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2620 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-03-08 05:24:46,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 670. [2025-03-08 05:24:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 537 states have (on average 1.6163873370577282) internal successors, (868), 558 states have internal predecessors, (868), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:46,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1069 transitions. [2025-03-08 05:24:46,518 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1069 transitions. Word has length 169 [2025-03-08 05:24:46,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:46,519 INFO L471 AbstractCegarLoop]: Abstraction has 670 states and 1069 transitions. [2025-03-08 05:24:46,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1069 transitions. [2025-03-08 05:24:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-08 05:24:46,522 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:46,522 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:46,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-08 05:24:46,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-08 05:24:46,724 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:46,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash 675831477, now seen corresponding path program 1 times [2025-03-08 05:24:46,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798506447] [2025-03-08 05:24:46,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:46,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-08 05:24:46,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-08 05:24:46,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:46,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:46,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:46,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798506447] [2025-03-08 05:24:46,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798506447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:46,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:46,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:24:46,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441874677] [2025-03-08 05:24:46,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:46,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:46,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:46,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:24:46,786 INFO L87 Difference]: Start difference. First operand 670 states and 1069 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:46,815 INFO L93 Difference]: Finished difference Result 1268 states and 2051 transitions. [2025-03-08 05:24:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:46,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2025-03-08 05:24:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:46,818 INFO L225 Difference]: With dead ends: 1268 [2025-03-08 05:24:46,819 INFO L226 Difference]: Without dead ends: 630 [2025-03-08 05:24:46,820 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 05:24:46,820 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 8 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:46,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2738 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:46,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2025-03-08 05:24:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2025-03-08 05:24:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 500 states have (on average 1.61) internal successors, (805), 519 states have internal predecessors, (805), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-08 05:24:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1002 transitions. [2025-03-08 05:24:46,835 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1002 transitions. Word has length 170 [2025-03-08 05:24:46,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:46,835 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 1002 transitions. [2025-03-08 05:24:46,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1002 transitions. [2025-03-08 05:24:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-08 05:24:46,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:46,838 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:46,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-08 05:24:46,838 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:46,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1847377990, now seen corresponding path program 1 times [2025-03-08 05:24:46,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:46,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452018044] [2025-03-08 05:24:46,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:46,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:46,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 05:24:46,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 05:24:46,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:46,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 05:24:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:46,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452018044] [2025-03-08 05:24:46,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452018044] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:46,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:46,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:24:46,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303555471] [2025-03-08 05:24:46,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:46,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:46,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:46,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:46,985 INFO L87 Difference]: Start difference. First operand 630 states and 1002 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:47,045 INFO L93 Difference]: Finished difference Result 1171 states and 1890 transitions. [2025-03-08 05:24:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:24:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 171 [2025-03-08 05:24:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:47,049 INFO L225 Difference]: With dead ends: 1171 [2025-03-08 05:24:47,050 INFO L226 Difference]: Without dead ends: 616 [2025-03-08 05:24:47,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:47,052 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 88 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:47,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5304 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2025-03-08 05:24:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2025-03-08 05:24:47,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 486 states have (on average 1.6049382716049383) internal successors, (780), 505 states have internal predecessors, (780), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-08 05:24:47,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 977 transitions. [2025-03-08 05:24:47,071 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 977 transitions. Word has length 171 [2025-03-08 05:24:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:47,071 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 977 transitions. [2025-03-08 05:24:47,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 977 transitions. [2025-03-08 05:24:47,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-08 05:24:47,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:47,074 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:47,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-08 05:24:47,074 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:47,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:47,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1441941694, now seen corresponding path program 1 times [2025-03-08 05:24:47,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:47,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989868774] [2025-03-08 05:24:47,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:47,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:47,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 05:24:47,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 05:24:47,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:47,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:47,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:47,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989868774] [2025-03-08 05:24:47,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989868774] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:47,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 05:24:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437606459] [2025-03-08 05:24:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:47,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 05:24:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:47,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 05:24:47,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:47,260 INFO L87 Difference]: Start difference. First operand 616 states and 977 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:47,377 INFO L93 Difference]: Finished difference Result 1198 states and 1918 transitions. [2025-03-08 05:24:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:24:47,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2025-03-08 05:24:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:47,381 INFO L225 Difference]: With dead ends: 1198 [2025-03-08 05:24:47,382 INFO L226 Difference]: Without dead ends: 607 [2025-03-08 05:24:47,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:47,384 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 45 mSDsluCounter, 5956 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6813 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:47,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6813 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:47,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2025-03-08 05:24:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2025-03-08 05:24:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 477 states have (on average 1.6037735849056605) internal successors, (765), 496 states have internal predecessors, (765), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-08 05:24:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 962 transitions. [2025-03-08 05:24:47,399 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 962 transitions. Word has length 172 [2025-03-08 05:24:47,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:47,400 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 962 transitions. [2025-03-08 05:24:47,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 962 transitions. [2025-03-08 05:24:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 05:24:47,402 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:47,402 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:47,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-08 05:24:47,402 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:47,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -326342678, now seen corresponding path program 1 times [2025-03-08 05:24:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:47,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309323644] [2025-03-08 05:24:47,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:47,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 05:24:47,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 05:24:47,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:47,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 05:24:47,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309323644] [2025-03-08 05:24:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309323644] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910348806] [2025-03-08 05:24:47,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:47,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:47,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:47,680 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:47,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-08 05:24:47,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 05:24:47,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 05:24:47,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:47,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:47,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 05:24:47,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 05:24:48,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:48,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910348806] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:48,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:48,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-03-08 05:24:48,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066106174] [2025-03-08 05:24:48,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:48,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:24:48,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:48,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:24:48,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-03-08 05:24:48,091 INFO L87 Difference]: Start difference. First operand 607 states and 962 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-08 05:24:50,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:50,468 INFO L93 Difference]: Finished difference Result 1970 states and 3233 transitions. [2025-03-08 05:24:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 05:24:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 173 [2025-03-08 05:24:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:50,481 INFO L225 Difference]: With dead ends: 1970 [2025-03-08 05:24:50,481 INFO L226 Difference]: Without dead ends: 1455 [2025-03-08 05:24:50,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-03-08 05:24:50,484 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 2382 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 4832 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 5351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 4832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:50,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 2749 Invalid, 5351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 4832 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-08 05:24:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2025-03-08 05:24:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1342. [2025-03-08 05:24:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1055 states have (on average 1.642654028436019) internal successors, (1733), 1094 states have internal predecessors, (1733), 217 states have call successors, (217), 64 states have call predecessors, (217), 69 states have return successors, (236), 209 states have call predecessors, (236), 212 states have call successors, (236) [2025-03-08 05:24:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2186 transitions. [2025-03-08 05:24:50,536 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2186 transitions. Word has length 173 [2025-03-08 05:24:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:50,537 INFO L471 AbstractCegarLoop]: Abstraction has 1342 states and 2186 transitions. [2025-03-08 05:24:50,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-08 05:24:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2186 transitions. [2025-03-08 05:24:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 05:24:50,540 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:50,540 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:50,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-08 05:24:50,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:50,741 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:50,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1230004420, now seen corresponding path program 1 times [2025-03-08 05:24:50,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:50,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191498157] [2025-03-08 05:24:50,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:50,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:50,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 05:24:50,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 05:24:50,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:50,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:51,001 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:51,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191498157] [2025-03-08 05:24:51,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191498157] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134669664] [2025-03-08 05:24:51,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:51,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:51,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:51,004 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:51,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-08 05:24:51,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 05:24:51,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 05:24:51,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:51,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:51,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-08 05:24:51,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:24:51,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134669664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:51,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:51,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:24:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101367739] [2025-03-08 05:24:51,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:51,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:51,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:51,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:51,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:24:51,408 INFO L87 Difference]: Start difference. First operand 1342 states and 2186 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-08 05:24:53,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:53,056 INFO L93 Difference]: Finished difference Result 2849 states and 4687 transitions. [2025-03-08 05:24:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 05:24:53,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 175 [2025-03-08 05:24:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:53,068 INFO L225 Difference]: With dead ends: 2849 [2025-03-08 05:24:53,068 INFO L226 Difference]: Without dead ends: 1599 [2025-03-08 05:24:53,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-08 05:24:53,074 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 2132 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 3948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:53,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2216 Valid, 2026 Invalid, 3948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-08 05:24:53,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2025-03-08 05:24:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1413. [2025-03-08 05:24:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1107 states have (on average 1.6305329719963866) internal successors, (1805), 1152 states have internal predecessors, (1805), 225 states have call successors, (225), 69 states have call predecessors, (225), 80 states have return successors, (262), 217 states have call predecessors, (262), 220 states have call successors, (262) [2025-03-08 05:24:53,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2292 transitions. [2025-03-08 05:24:53,125 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2292 transitions. Word has length 175 [2025-03-08 05:24:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:53,125 INFO L471 AbstractCegarLoop]: Abstraction has 1413 states and 2292 transitions. [2025-03-08 05:24:53,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-08 05:24:53,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2292 transitions. [2025-03-08 05:24:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 05:24:53,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:53,128 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:53,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-08 05:24:53,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:53,329 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:53,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:53,330 INFO L85 PathProgramCache]: Analyzing trace with hash -958743622, now seen corresponding path program 1 times [2025-03-08 05:24:53,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:53,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775437399] [2025-03-08 05:24:53,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:53,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:53,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:53,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:53,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:53,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775437399] [2025-03-08 05:24:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775437399] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:53,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586494632] [2025-03-08 05:24:53,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:53,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:53,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:53,587 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:53,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-08 05:24:53,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:53,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:53,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:53,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:53,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:24:53,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:53,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586494632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:53,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-08 05:24:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508233265] [2025-03-08 05:24:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:53,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:24:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:53,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:24:53,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:53,864 INFO L87 Difference]: Start difference. First operand 1413 states and 2292 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 05:24:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:53,932 INFO L93 Difference]: Finished difference Result 3432 states and 5663 transitions. [2025-03-08 05:24:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:24:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 180 [2025-03-08 05:24:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:53,949 INFO L225 Difference]: With dead ends: 3432 [2025-03-08 05:24:53,950 INFO L226 Difference]: Without dead ends: 2114 [2025-03-08 05:24:53,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:53,975 INFO L435 NwaCegarLoop]: 1545 mSDtfsCounter, 791 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:53,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2418 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2025-03-08 05:24:54,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1409. [2025-03-08 05:24:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1105 states have (on average 1.6298642533936651) internal successors, (1801), 1148 states have internal predecessors, (1801), 225 states have call successors, (225), 69 states have call predecessors, (225), 78 states have return successors, (253), 217 states have call predecessors, (253), 220 states have call successors, (253) [2025-03-08 05:24:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 2279 transitions. [2025-03-08 05:24:54,093 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 2279 transitions. Word has length 180 [2025-03-08 05:24:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:54,094 INFO L471 AbstractCegarLoop]: Abstraction has 1409 states and 2279 transitions. [2025-03-08 05:24:54,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 05:24:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 2279 transitions. [2025-03-08 05:24:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 05:24:54,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:54,096 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:54,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:54,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:54,297 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:54,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:54,298 INFO L85 PathProgramCache]: Analyzing trace with hash -834670375, now seen corresponding path program 1 times [2025-03-08 05:24:54,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791631541] [2025-03-08 05:24:54,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:54,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:54,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:54,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:54,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791631541] [2025-03-08 05:24:54,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791631541] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230488526] [2025-03-08 05:24:54,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:54,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:54,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:54,555 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:54,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-08 05:24:54,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:54,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:54,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:54,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:54,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-08 05:24:54,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:54,931 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:24:54,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:54,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230488526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:54,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:54,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:24:54,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431779846] [2025-03-08 05:24:54,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:54,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:54,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:54,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:54,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:24:54,933 INFO L87 Difference]: Start difference. First operand 1409 states and 2279 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:56,049 INFO L93 Difference]: Finished difference Result 4107 states and 6735 transitions. [2025-03-08 05:24:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2025-03-08 05:24:56,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:56,065 INFO L225 Difference]: With dead ends: 4107 [2025-03-08 05:24:56,065 INFO L226 Difference]: Without dead ends: 2790 [2025-03-08 05:24:56,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:56,071 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 1939 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:56,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 551 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 05:24:56,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2025-03-08 05:24:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2788. [2025-03-08 05:24:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2182 states have (on average 1.6351970669110907) internal successors, (3568), 2267 states have internal predecessors, (3568), 448 states have call successors, (448), 131 states have call predecessors, (448), 157 states have return successors, (530), 441 states have call predecessors, (530), 443 states have call successors, (530) [2025-03-08 05:24:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 4546 transitions. [2025-03-08 05:24:56,163 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 4546 transitions. Word has length 180 [2025-03-08 05:24:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:56,164 INFO L471 AbstractCegarLoop]: Abstraction has 2788 states and 4546 transitions. [2025-03-08 05:24:56,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 4546 transitions. [2025-03-08 05:24:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 05:24:56,168 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:56,168 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:56,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-08 05:24:56,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-08 05:24:56,369 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:56,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 265163098, now seen corresponding path program 1 times [2025-03-08 05:24:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:56,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406914287] [2025-03-08 05:24:56,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:56,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:56,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:56,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:56,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:24:56,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:56,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406914287] [2025-03-08 05:24:56,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406914287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:56,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:56,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 05:24:56,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944267284] [2025-03-08 05:24:56,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:56,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 05:24:56,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:56,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 05:24:56,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:56,586 INFO L87 Difference]: Start difference. First operand 2788 states and 4546 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:56,695 INFO L93 Difference]: Finished difference Result 4089 states and 6682 transitions. [2025-03-08 05:24:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:24:56,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2025-03-08 05:24:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:56,703 INFO L225 Difference]: With dead ends: 4089 [2025-03-08 05:24:56,703 INFO L226 Difference]: Without dead ends: 1387 [2025-03-08 05:24:56,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:56,710 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 31 mSDsluCounter, 6816 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7674 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:56,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7674 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2025-03-08 05:24:56,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1387. [2025-03-08 05:24:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1089 states have (on average 1.628099173553719) internal successors, (1773), 1131 states have internal predecessors, (1773), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2025-03-08 05:24:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 2240 transitions. [2025-03-08 05:24:56,795 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 2240 transitions. Word has length 180 [2025-03-08 05:24:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:56,795 INFO L471 AbstractCegarLoop]: Abstraction has 1387 states and 2240 transitions. [2025-03-08 05:24:56,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 2240 transitions. [2025-03-08 05:24:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-08 05:24:56,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:56,798 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:56,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-08 05:24:56,798 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:56,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:56,799 INFO L85 PathProgramCache]: Analyzing trace with hash -105164145, now seen corresponding path program 1 times [2025-03-08 05:24:56,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:56,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575993421] [2025-03-08 05:24:56,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:56,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:56,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 05:24:56,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 05:24:56,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:56,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:57,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:57,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575993421] [2025-03-08 05:24:57,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575993421] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:57,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050205474] [2025-03-08 05:24:57,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:57,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:57,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:57,108 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:57,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-08 05:24:57,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 05:24:57,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 05:24:57,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:57,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:57,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 05:24:57,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:24:57,409 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050205474] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:57,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:57,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2025-03-08 05:24:57,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29925304] [2025-03-08 05:24:57,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:57,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:57,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:57,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:57,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:57,410 INFO L87 Difference]: Start difference. First operand 1387 states and 2240 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 05:24:57,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:57,455 INFO L93 Difference]: Finished difference Result 1407 states and 2264 transitions. [2025-03-08 05:24:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:57,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 181 [2025-03-08 05:24:57,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:57,462 INFO L225 Difference]: With dead ends: 1407 [2025-03-08 05:24:57,462 INFO L226 Difference]: Without dead ends: 1393 [2025-03-08 05:24:57,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:57,463 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 0 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:57,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3469 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2025-03-08 05:24:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1393. [2025-03-08 05:24:57,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1095 states have (on average 1.6246575342465754) internal successors, (1779), 1137 states have internal predecessors, (1779), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2025-03-08 05:24:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2246 transitions. [2025-03-08 05:24:57,530 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2246 transitions. Word has length 181 [2025-03-08 05:24:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:57,535 INFO L471 AbstractCegarLoop]: Abstraction has 1393 states and 2246 transitions. [2025-03-08 05:24:57,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 05:24:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2246 transitions. [2025-03-08 05:24:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2025-03-08 05:24:57,541 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:57,542 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:57,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-08 05:24:57,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:57,743 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:57,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:57,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1401679600, now seen corresponding path program 1 times [2025-03-08 05:24:57,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:57,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604880438] [2025-03-08 05:24:57,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:57,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-03-08 05:24:57,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-03-08 05:24:57,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:57,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2025-03-08 05:24:58,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:58,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604880438] [2025-03-08 05:24:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604880438] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:58,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590401760] [2025-03-08 05:24:58,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:58,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:58,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:58,112 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:58,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-08 05:24:58,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-03-08 05:24:58,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-03-08 05:24:58,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:58,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:58,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:58,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 05:24:58,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:24:58,878 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-08 05:24:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590401760] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:24:58,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:24:58,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2025-03-08 05:24:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936421905] [2025-03-08 05:24:58,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:24:58,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 05:24:58,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:58,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 05:24:58,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-03-08 05:24:58,880 INFO L87 Difference]: Start difference. First operand 1393 states and 2246 transitions. Second operand has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 12 states have internal predecessors, (263), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2025-03-08 05:25:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:05,742 INFO L93 Difference]: Finished difference Result 10264 states and 17233 transitions. [2025-03-08 05:25:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-08 05:25:05,743 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 12 states have internal predecessors, (263), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) Word has length 270 [2025-03-08 05:25:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:05,790 INFO L225 Difference]: With dead ends: 10264 [2025-03-08 05:25:05,790 INFO L226 Difference]: Without dead ends: 8957 [2025-03-08 05:25:05,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 558 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=653, Invalid=4177, Unknown=0, NotChecked=0, Total=4830 [2025-03-08 05:25:05,804 INFO L435 NwaCegarLoop]: 814 mSDtfsCounter, 6416 mSDsluCounter, 6493 mSDsCounter, 0 mSdLazyCounter, 15460 mSolverCounterSat, 2035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6498 SdHoareTripleChecker+Valid, 7307 SdHoareTripleChecker+Invalid, 17495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2035 IncrementalHoareTripleChecker+Valid, 15460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:05,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6498 Valid, 7307 Invalid, 17495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2035 Valid, 15460 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-03-08 05:25:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8957 states. [2025-03-08 05:25:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8957 to 7809. [2025-03-08 05:25:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7809 states, 6017 states have (on average 1.6046202426458367) internal successors, (9655), 6269 states have internal predecessors, (9655), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 487 states have return successors, (1922), 1301 states have call predecessors, (1922), 1300 states have call successors, (1922) [2025-03-08 05:25:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7809 states to 7809 states and 12881 transitions. [2025-03-08 05:25:06,237 INFO L78 Accepts]: Start accepts. Automaton has 7809 states and 12881 transitions. Word has length 270 [2025-03-08 05:25:06,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:06,238 INFO L471 AbstractCegarLoop]: Abstraction has 7809 states and 12881 transitions. [2025-03-08 05:25:06,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.785714285714285) internal successors, (263), 12 states have internal predecessors, (263), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2025-03-08 05:25:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7809 states and 12881 transitions. [2025-03-08 05:25:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2025-03-08 05:25:06,254 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:06,254 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:06,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-08 05:25:06,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:06,455 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:06,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:06,455 INFO L85 PathProgramCache]: Analyzing trace with hash -513022692, now seen corresponding path program 1 times [2025-03-08 05:25:06,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:06,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880050957] [2025-03-08 05:25:06,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:06,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:06,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 272 statements into 1 equivalence classes. [2025-03-08 05:25:06,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 272 of 272 statements. [2025-03-08 05:25:06,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:06,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-03-08 05:25:06,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880050957] [2025-03-08 05:25:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880050957] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:06,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:25:06,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 05:25:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271308078] [2025-03-08 05:25:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:06,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:25:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:06,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:25:06,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:25:06,671 INFO L87 Difference]: Start difference. First operand 7809 states and 12881 transitions. Second operand has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 05:25:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:07,055 INFO L93 Difference]: Finished difference Result 15541 states and 25670 transitions. [2025-03-08 05:25:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:25:07,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 272 [2025-03-08 05:25:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:07,109 INFO L225 Difference]: With dead ends: 15541 [2025-03-08 05:25:07,109 INFO L226 Difference]: Without dead ends: 7800 [2025-03-08 05:25:07,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:25:07,143 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 41 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5961 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:07,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5961 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:25:07,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7800 states. [2025-03-08 05:25:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7800 to 7800. [2025-03-08 05:25:07,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 6010 states have (on average 1.6041597337770384) internal successors, (9641), 6261 states have internal predecessors, (9641), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 485 states have return successors, (1918), 1300 states have call predecessors, (1918), 1300 states have call successors, (1918) [2025-03-08 05:25:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 12863 transitions. [2025-03-08 05:25:07,594 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 12863 transitions. Word has length 272 [2025-03-08 05:25:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:07,594 INFO L471 AbstractCegarLoop]: Abstraction has 7800 states and 12863 transitions. [2025-03-08 05:25:07,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 05:25:07,594 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 12863 transitions. [2025-03-08 05:25:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2025-03-08 05:25:07,608 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:07,608 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:25:07,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-08 05:25:07,609 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:07,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash -758010778, now seen corresponding path program 1 times [2025-03-08 05:25:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:07,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144033546] [2025-03-08 05:25:07,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:07,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-08 05:25:07,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-08 05:25:07,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:07,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-03-08 05:25:07,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:07,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144033546] [2025-03-08 05:25:07,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144033546] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:07,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423655601] [2025-03-08 05:25:07,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:07,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:07,789 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:07,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-08 05:25:07,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-08 05:25:08,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-08 05:25:08,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:08,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:08,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:25:08,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-08 05:25:08,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:25:08,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423655601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:08,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:25:08,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-03-08 05:25:08,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665616554] [2025-03-08 05:25:08,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:08,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:25:08,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:08,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:25:08,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:25:08,151 INFO L87 Difference]: Start difference. First operand 7800 states and 12863 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 05:25:08,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:08,306 INFO L93 Difference]: Finished difference Result 10221 states and 16811 transitions. [2025-03-08 05:25:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:25:08,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 273 [2025-03-08 05:25:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:08,324 INFO L225 Difference]: With dead ends: 10221 [2025-03-08 05:25:08,324 INFO L226 Difference]: Without dead ends: 2461 [2025-03-08 05:25:08,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:25:08,346 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 1 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:08,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2553 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:25:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2025-03-08 05:25:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2461. [2025-03-08 05:25:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1924 states have (on average 1.6039501039501038) internal successors, (3086), 2002 states have internal predecessors, (3086), 381 states have call successors, (381), 114 states have call predecessors, (381), 155 states have return successors, (523), 368 states have call predecessors, (523), 377 states have call successors, (523) [2025-03-08 05:25:08,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3990 transitions. [2025-03-08 05:25:08,440 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3990 transitions. Word has length 273 [2025-03-08 05:25:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:08,440 INFO L471 AbstractCegarLoop]: Abstraction has 2461 states and 3990 transitions. [2025-03-08 05:25:08,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 05:25:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3990 transitions. [2025-03-08 05:25:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-08 05:25:08,444 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:08,444 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 05:25:08,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-08 05:25:08,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-08 05:25:08,645 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:08,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash 352295299, now seen corresponding path program 1 times [2025-03-08 05:25:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:08,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112086582] [2025-03-08 05:25:08,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:08,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:08,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-08 05:25:08,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-08 05:25:08,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:08,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2025-03-08 05:25:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112086582] [2025-03-08 05:25:08,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112086582] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:08,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555906379] [2025-03-08 05:25:08,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:08,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:08,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:08,964 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:08,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-08 05:25:09,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-08 05:25:09,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-08 05:25:09,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:09,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:09,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:25:09,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:09,375 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-03-08 05:25:09,375 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:25:09,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555906379] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:09,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:25:09,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-08 05:25:09,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682121185] [2025-03-08 05:25:09,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:09,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:25:09,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:09,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:25:09,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:25:09,377 INFO L87 Difference]: Start difference. First operand 2461 states and 3990 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 05:25:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:09,519 INFO L93 Difference]: Finished difference Result 4858 states and 7925 transitions. [2025-03-08 05:25:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:25:09,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 276 [2025-03-08 05:25:09,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:09,536 INFO L225 Difference]: With dead ends: 4858 [2025-03-08 05:25:09,536 INFO L226 Difference]: Without dead ends: 2481 [2025-03-08 05:25:09,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:25:09,547 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 0 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:09,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4293 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:25:09,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2025-03-08 05:25:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2475. [2025-03-08 05:25:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 1934 states have (on average 1.6008273009307135) internal successors, (3096), 2014 states have internal predecessors, (3096), 381 states have call successors, (381), 114 states have call predecessors, (381), 159 states have return successors, (527), 370 states have call predecessors, (527), 377 states have call successors, (527) [2025-03-08 05:25:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 4004 transitions. [2025-03-08 05:25:09,702 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 4004 transitions. Word has length 276 [2025-03-08 05:25:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:09,703 INFO L471 AbstractCegarLoop]: Abstraction has 2475 states and 4004 transitions. [2025-03-08 05:25:09,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 05:25:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 4004 transitions. [2025-03-08 05:25:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2025-03-08 05:25:09,708 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:09,708 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:25:09,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-08 05:25:09,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-08 05:25:09,908 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:09,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1888846971, now seen corresponding path program 1 times [2025-03-08 05:25:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:09,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127865642] [2025-03-08 05:25:09,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:09,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 282 statements into 1 equivalence classes. [2025-03-08 05:25:09,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 282 of 282 statements. [2025-03-08 05:25:09,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:09,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2025-03-08 05:25:10,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:10,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127865642] [2025-03-08 05:25:10,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127865642] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:10,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696768109] [2025-03-08 05:25:10,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:10,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:10,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:10,095 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:10,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-08 05:25:10,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 282 statements into 1 equivalence classes. [2025-03-08 05:25:10,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 282 of 282 statements. [2025-03-08 05:25:10,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:10,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:10,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 05:25:10,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-08 05:25:10,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:25:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 24 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2025-03-08 05:25:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696768109] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:25:11,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:25:11,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 18 [2025-03-08 05:25:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673055207] [2025-03-08 05:25:11,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:25:11,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 05:25:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:11,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 05:25:11,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2025-03-08 05:25:11,308 INFO L87 Difference]: Start difference. First operand 2475 states and 4004 transitions. Second operand has 18 states, 18 states have (on average 16.166666666666668) internal successors, (291), 18 states have internal predecessors, (291), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2025-03-08 05:25:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:18,683 INFO L93 Difference]: Finished difference Result 12547 states and 20543 transitions. [2025-03-08 05:25:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2025-03-08 05:25:18,683 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.166666666666668) internal successors, (291), 18 states have internal predecessors, (291), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) Word has length 282 [2025-03-08 05:25:18,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:18,724 INFO L225 Difference]: With dead ends: 12547 [2025-03-08 05:25:18,724 INFO L226 Difference]: Without dead ends: 9613 [2025-03-08 05:25:18,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 606 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6395 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2332, Invalid=14180, Unknown=0, NotChecked=0, Total=16512 [2025-03-08 05:25:18,748 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 17467 mSDsluCounter, 5917 mSDsCounter, 0 mSdLazyCounter, 11145 mSolverCounterSat, 5557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17503 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 16702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5557 IncrementalHoareTripleChecker+Valid, 11145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:18,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17503 Valid, 6758 Invalid, 16702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5557 Valid, 11145 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2025-03-08 05:25:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9613 states. [2025-03-08 05:25:19,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9613 to 9152. [2025-03-08 05:25:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9152 states, 6949 states have (on average 1.5540365520218737) internal successors, (10799), 7295 states have internal predecessors, (10799), 1599 states have call successors, (1599), 468 states have call predecessors, (1599), 603 states have return successors, (2169), 1580 states have call predecessors, (2169), 1595 states have call successors, (2169) [2025-03-08 05:25:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9152 states to 9152 states and 14567 transitions. [2025-03-08 05:25:19,212 INFO L78 Accepts]: Start accepts. Automaton has 9152 states and 14567 transitions. Word has length 282 [2025-03-08 05:25:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:19,213 INFO L471 AbstractCegarLoop]: Abstraction has 9152 states and 14567 transitions. [2025-03-08 05:25:19,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.166666666666668) internal successors, (291), 18 states have internal predecessors, (291), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2025-03-08 05:25:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 9152 states and 14567 transitions. [2025-03-08 05:25:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2025-03-08 05:25:19,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:19,216 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:25:19,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-08 05:25:19,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-08 05:25:19,418 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:19,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1063913340, now seen corresponding path program 1 times [2025-03-08 05:25:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909098559] [2025-03-08 05:25:19,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:19,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 233 statements into 1 equivalence classes. [2025-03-08 05:25:19,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 233 of 233 statements. [2025-03-08 05:25:19,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:19,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-03-08 05:25:19,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909098559] [2025-03-08 05:25:19,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909098559] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733003371] [2025-03-08 05:25:19,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:19,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:19,712 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:19,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-08 05:25:19,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 233 statements into 1 equivalence classes. [2025-03-08 05:25:19,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 233 of 233 statements. [2025-03-08 05:25:19,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:19,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:20,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 05:25:20,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-08 05:25:20,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:25:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2025-03-08 05:25:20,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733003371] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:25:20,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:25:20,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2025-03-08 05:25:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758961252] [2025-03-08 05:25:20,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:25:20,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 05:25:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:20,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 05:25:20,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-03-08 05:25:20,629 INFO L87 Difference]: Start difference. First operand 9152 states and 14567 transitions. Second operand has 23 states, 23 states have (on average 13.434782608695652) internal successors, (309), 19 states have internal predecessors, (309), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2025-03-08 05:25:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:26,487 INFO L93 Difference]: Finished difference Result 29629 states and 47826 transitions. [2025-03-08 05:25:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 05:25:26,488 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.434782608695652) internal successors, (309), 19 states have internal predecessors, (309), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) Word has length 233 [2025-03-08 05:25:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:26,556 INFO L225 Difference]: With dead ends: 29629 [2025-03-08 05:25:26,556 INFO L226 Difference]: Without dead ends: 20564 [2025-03-08 05:25:26,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 467 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 05:25:26,585 INFO L435 NwaCegarLoop]: 798 mSDtfsCounter, 6673 mSDsluCounter, 7561 mSDsCounter, 0 mSdLazyCounter, 15064 mSolverCounterSat, 2011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6673 SdHoareTripleChecker+Valid, 8359 SdHoareTripleChecker+Invalid, 17075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2011 IncrementalHoareTripleChecker+Valid, 15064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:26,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6673 Valid, 8359 Invalid, 17075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2011 Valid, 15064 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2025-03-08 05:25:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20564 states. [2025-03-08 05:25:27,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20564 to 19942. [2025-03-08 05:25:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19942 states, 14927 states have (on average 1.5492731292289141) internal successors, (23126), 15694 states have internal predecessors, (23126), 3796 states have call successors, (3796), 908 states have call predecessors, (3796), 1218 states have return successors, (5249), 3803 states have call predecessors, (5249), 3792 states have call successors, (5249) [2025-03-08 05:25:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19942 states to 19942 states and 32171 transitions. [2025-03-08 05:25:27,779 INFO L78 Accepts]: Start accepts. Automaton has 19942 states and 32171 transitions. Word has length 233 [2025-03-08 05:25:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:27,779 INFO L471 AbstractCegarLoop]: Abstraction has 19942 states and 32171 transitions. [2025-03-08 05:25:27,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.434782608695652) internal successors, (309), 19 states have internal predecessors, (309), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2025-03-08 05:25:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 19942 states and 32171 transitions. [2025-03-08 05:25:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2025-03-08 05:25:27,785 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:27,786 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:25:27,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-08 05:25:27,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:27,986 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:27,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:27,987 INFO L85 PathProgramCache]: Analyzing trace with hash 506900467, now seen corresponding path program 1 times [2025-03-08 05:25:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:27,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37527962] [2025-03-08 05:25:27,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:27,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:28,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-03-08 05:25:28,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-03-08 05:25:28,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:28,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-08 05:25:28,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37527962] [2025-03-08 05:25:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37527962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:28,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:25:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:25:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956943702] [2025-03-08 05:25:28,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:28,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:25:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:28,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:25:28,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:25:28,099 INFO L87 Difference]: Start difference. First operand 19942 states and 32171 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-08 05:25:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:29,253 INFO L93 Difference]: Finished difference Result 39907 states and 64718 transitions. [2025-03-08 05:25:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:25:29,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2025-03-08 05:25:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:29,338 INFO L225 Difference]: With dead ends: 39907 [2025-03-08 05:25:29,338 INFO L226 Difference]: Without dead ends: 20102 [2025-03-08 05:25:29,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:25:29,394 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 0 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4249 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:29,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4249 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:25:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20102 states. [2025-03-08 05:25:30,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20102 to 20054. [2025-03-08 05:25:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20054 states, 15039 states have (on average 1.5430547243832702) internal successors, (23206), 15778 states have internal predecessors, (23206), 3768 states have call successors, (3768), 908 states have call predecessors, (3768), 1246 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-08 05:25:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20054 states to 20054 states and 32315 transitions. [2025-03-08 05:25:30,464 INFO L78 Accepts]: Start accepts. Automaton has 20054 states and 32315 transitions. Word has length 237 [2025-03-08 05:25:30,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:30,464 INFO L471 AbstractCegarLoop]: Abstraction has 20054 states and 32315 transitions. [2025-03-08 05:25:30,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-08 05:25:30,464 INFO L276 IsEmpty]: Start isEmpty. Operand 20054 states and 32315 transitions. [2025-03-08 05:25:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-03-08 05:25:30,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:30,470 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:30,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-08 05:25:30,471 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:30,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:30,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1349482586, now seen corresponding path program 1 times [2025-03-08 05:25:30,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:30,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579967895] [2025-03-08 05:25:30,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:30,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:30,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-03-08 05:25:30,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-03-08 05:25:30,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:30,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-08 05:25:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579967895] [2025-03-08 05:25:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579967895] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068565968] [2025-03-08 05:25:30,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:30,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:30,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:30,756 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:30,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-08 05:25:30,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-03-08 05:25:31,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-03-08 05:25:31,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:31,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:31,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:25:31,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-08 05:25:31,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:25:31,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068565968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:31,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:25:31,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:25:31,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689427211] [2025-03-08 05:25:31,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:31,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:25:31,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:31,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:25:31,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:25:31,145 INFO L87 Difference]: Start difference. First operand 20054 states and 32315 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-08 05:25:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:32,928 INFO L93 Difference]: Finished difference Result 40688 states and 66306 transitions. [2025-03-08 05:25:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:25:32,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 312 [2025-03-08 05:25:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:33,072 INFO L225 Difference]: With dead ends: 40688 [2025-03-08 05:25:33,073 INFO L226 Difference]: Without dead ends: 20774 [2025-03-08 05:25:33,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:25:33,181 INFO L435 NwaCegarLoop]: 798 mSDtfsCounter, 144 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:33,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2371 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:25:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20774 states. [2025-03-08 05:25:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20774 to 20678. [2025-03-08 05:25:34,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20678 states, 15647 states have (on average 1.5577426982808207) internal successors, (24374), 16386 states have internal predecessors, (24374), 3768 states have call successors, (3768), 924 states have call predecessors, (3768), 1262 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-08 05:25:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20678 states to 20678 states and 33483 transitions. [2025-03-08 05:25:34,571 INFO L78 Accepts]: Start accepts. Automaton has 20678 states and 33483 transitions. Word has length 312 [2025-03-08 05:25:34,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:34,571 INFO L471 AbstractCegarLoop]: Abstraction has 20678 states and 33483 transitions. [2025-03-08 05:25:34,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-08 05:25:34,571 INFO L276 IsEmpty]: Start isEmpty. Operand 20678 states and 33483 transitions. [2025-03-08 05:25:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2025-03-08 05:25:34,577 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:34,578 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:25:34,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-08 05:25:34,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:34,778 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:34,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:34,779 INFO L85 PathProgramCache]: Analyzing trace with hash 914223296, now seen corresponding path program 1 times [2025-03-08 05:25:34,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:34,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512821465] [2025-03-08 05:25:34,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:34,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 244 statements into 1 equivalence classes. [2025-03-08 05:25:34,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 244 of 244 statements. [2025-03-08 05:25:34,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:34,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2025-03-08 05:25:34,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:34,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512821465] [2025-03-08 05:25:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512821465] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:34,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495199941] [2025-03-08 05:25:34,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:34,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:34,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:34,957 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:34,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-08 05:25:35,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 244 statements into 1 equivalence classes. [2025-03-08 05:25:35,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 244 of 244 statements. [2025-03-08 05:25:35,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:35,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:35,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:25:35,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-08 05:25:35,304 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:25:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495199941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:35,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:25:35,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-08 05:25:35,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715360133] [2025-03-08 05:25:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:35,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:25:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:35,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:25:35,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:25:35,305 INFO L87 Difference]: Start difference. First operand 20678 states and 33483 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2025-03-08 05:25:37,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:37,214 INFO L93 Difference]: Finished difference Result 60718 states and 100273 transitions. [2025-03-08 05:25:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:25:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 244 [2025-03-08 05:25:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:37,521 INFO L225 Difference]: With dead ends: 60718 [2025-03-08 05:25:37,521 INFO L226 Difference]: Without dead ends: 40137 [2025-03-08 05:25:37,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:25:37,655 INFO L435 NwaCegarLoop]: 1292 mSDtfsCounter, 702 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:37,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2143 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:25:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40137 states. [2025-03-08 05:25:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40137 to 40089. [2025-03-08 05:25:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40089 states, 30261 states have (on average 1.5538151416014012) internal successors, (47020), 31717 states have internal predecessors, (47020), 7384 states have call successors, (7384), 1784 states have call predecessors, (7384), 2443 states have return successors, (11582), 7515 states have call predecessors, (11582), 7380 states have call successors, (11582) [2025-03-08 05:25:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40089 states to 40089 states and 65986 transitions. [2025-03-08 05:25:40,647 INFO L78 Accepts]: Start accepts. Automaton has 40089 states and 65986 transitions. Word has length 244 [2025-03-08 05:25:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:40,647 INFO L471 AbstractCegarLoop]: Abstraction has 40089 states and 65986 transitions. [2025-03-08 05:25:40,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2025-03-08 05:25:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 40089 states and 65986 transitions. [2025-03-08 05:25:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-03-08 05:25:40,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:40,659 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:25:40,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-08 05:25:40,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-08 05:25:40,859 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:40,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash -361785777, now seen corresponding path program 1 times [2025-03-08 05:25:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:40,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925373839] [2025-03-08 05:25:40,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:40,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:40,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-03-08 05:25:40,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-03-08 05:25:40,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:40,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-08 05:25:41,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925373839] [2025-03-08 05:25:41,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925373839] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:41,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519226502] [2025-03-08 05:25:41,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:41,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:41,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:41,137 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:41,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-08 05:25:41,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-03-08 05:25:41,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-03-08 05:25:41,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:41,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:41,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:25:41,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-03-08 05:25:41,517 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:25:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519226502] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:41,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:25:41,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:25:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607491474] [2025-03-08 05:25:41,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:41,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:25:41,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:41,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:25:41,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:25:41,518 INFO L87 Difference]: Start difference. First operand 40089 states and 65986 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-08 05:25:44,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:44,101 INFO L93 Difference]: Finished difference Result 81562 states and 135620 transitions. [2025-03-08 05:25:44,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:25:44,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2025-03-08 05:25:44,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:44,371 INFO L225 Difference]: With dead ends: 81562 [2025-03-08 05:25:44,371 INFO L226 Difference]: Without dead ends: 41625 [2025-03-08 05:25:44,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:25:44,594 INFO L435 NwaCegarLoop]: 797 mSDtfsCounter, 142 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:44,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2368 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:25:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41625 states.