./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/vogal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/vogal-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 02:53:59,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 02:54:00,013 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 02:54:00,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 02:54:00,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 02:54:00,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 02:54:00,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 02:54:00,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 02:54:00,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 02:54:00,036 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 02:54:00,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 02:54:00,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 02:54:00,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 02:54:00,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 02:54:00,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 02:54:00,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 02:54:00,038 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:54:00,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:54:00,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:54:00,039 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 02:54:00,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 02:54:00,040 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-jdk21/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 -> 0004a4c1c8347096eaba7e87038be30bb20b14d3b5abd082e79b4b4e835a243e [2025-01-09 02:54:00,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 02:54:00,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 02:54:00,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 02:54:00,249 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 02:54:00,249 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 02:54:00,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/vogal-1.i [2025-01-09 02:54:01,569 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d08ac38b/e8215e1f4b814b9e9ebba0af41e3e8df/FLAGcdf5671a1 [2025-01-09 02:54:01,765 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 02:54:01,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/vogal-1.i [2025-01-09 02:54:01,772 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d08ac38b/e8215e1f4b814b9e9ebba0af41e3e8df/FLAGcdf5671a1 [2025-01-09 02:54:01,791 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d08ac38b/e8215e1f4b814b9e9ebba0af41e3e8df [2025-01-09 02:54:01,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 02:54:01,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 02:54:01,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 02:54:01,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 02:54:01,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 02:54:01,799 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:01,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792249dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01, skipping insertion in model container [2025-01-09 02:54:01,800 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:01,811 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 02:54:01,904 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/vogal-1.i[895,908] [2025-01-09 02:54:01,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:54:01,930 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 02:54:01,937 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/vogal-1.i[895,908] [2025-01-09 02:54:01,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:54:01,959 INFO L204 MainTranslator]: Completed translation [2025-01-09 02:54:01,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01 WrapperNode [2025-01-09 02:54:01,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 02:54:01,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 02:54:01,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 02:54:01,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 02:54:01,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:01,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:01,988 INFO L138 Inliner]: procedures = 18, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2025-01-09 02:54:01,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 02:54:01,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 02:54:01,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 02:54:01,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 02:54:01,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:01,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:01,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,009 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 6, 14]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 13 writes are split as follows [0, 1, 12]. [2025-01-09 02:54:02,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,019 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,020 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,025 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 02:54:02,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 02:54:02,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 02:54:02,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 02:54:02,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (1/1) ... [2025-01-09 02:54:02,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:54:02,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:02,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 02:54:02,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 02:54:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 02:54:02,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 02:54:02,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 02:54:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 02:54:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 02:54:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 02:54:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 02:54:02,135 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 02:54:02,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 02:54:02,281 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-01-09 02:54:02,284 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 02:54:02,293 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 02:54:02,294 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 02:54:02,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:54:02 BoogieIcfgContainer [2025-01-09 02:54:02,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 02:54:02,297 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 02:54:02,297 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 02:54:02,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 02:54:02,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:54:01" (1/3) ... [2025-01-09 02:54:02,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cea72b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:54:02, skipping insertion in model container [2025-01-09 02:54:02,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:01" (2/3) ... [2025-01-09 02:54:02,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cea72b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:54:02, skipping insertion in model container [2025-01-09 02:54:02,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:54:02" (3/3) ... [2025-01-09 02:54:02,303 INFO L128 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2025-01-09 02:54:02,316 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 02:54:02,318 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG vogal-1.i that has 1 procedures, 26 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-01-09 02:54:02,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 02:54:02,376 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;@637dad8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 02:54:02,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 02:54:02,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 02:54:02,383 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:02,384 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:02,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:02,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1790550025, now seen corresponding path program 1 times [2025-01-09 02:54:02,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:02,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579607931] [2025-01-09 02:54:02,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:02,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 02:54:02,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 02:54:02,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:02,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:02,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:02,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579607931] [2025-01-09 02:54:02,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579607931] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:02,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:54:02,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 02:54:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333079215] [2025-01-09 02:54:02,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:02,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 02:54:02,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:02,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 02:54:02,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 02:54:02,537 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:02,545 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2025-01-09 02:54:02,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 02:54:02,546 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-09 02:54:02,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:02,550 INFO L225 Difference]: With dead ends: 45 [2025-01-09 02:54:02,550 INFO L226 Difference]: Without dead ends: 22 [2025-01-09 02:54:02,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 02:54:02,556 INFO L435 NwaCegarLoop]: 34 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, 34 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 [2025-01-09 02:54:02,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-09 02:54:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-09 02:54:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:02,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2025-01-09 02:54:02,590 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2025-01-09 02:54:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:02,590 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2025-01-09 02:54:02,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2025-01-09 02:54:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 02:54:02,591 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:02,591 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:02,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 02:54:02,591 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:02,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -497931704, now seen corresponding path program 1 times [2025-01-09 02:54:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454829503] [2025-01-09 02:54:02,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:02,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 02:54:02,638 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 02:54:02,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:02,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454829503] [2025-01-09 02:54:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454829503] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:02,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:54:02,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 02:54:02,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032234033] [2025-01-09 02:54:02,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:02,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 02:54:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:02,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 02:54:02,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 02:54:02,731 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:02,759 INFO L93 Difference]: Finished difference Result 56 states and 75 transitions. [2025-01-09 02:54:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 02:54:02,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-09 02:54:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:02,760 INFO L225 Difference]: With dead ends: 56 [2025-01-09 02:54:02,760 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 02:54:02,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 02:54:02,761 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:02,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 39 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:02,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 02:54:02,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 23. [2025-01-09 02:54:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2025-01-09 02:54:02,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2025-01-09 02:54:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:02,766 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2025-01-09 02:54:02,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2025-01-09 02:54:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 02:54:02,766 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:02,766 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:02,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 02:54:02,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:02,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:02,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1444703592, now seen corresponding path program 1 times [2025-01-09 02:54:02,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:02,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205518957] [2025-01-09 02:54:02,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:02,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:02,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 02:54:02,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 02:54:02,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:02,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:02,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:02,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205518957] [2025-01-09 02:54:02,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205518957] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83455359] [2025-01-09 02:54:02,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:02,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:02,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:02,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:02,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 02:54:03,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 02:54:03,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 02:54:03,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:03,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:03,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 02:54:03,025 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 02:54:03,073 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 02:54:03,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83455359] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:03,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 02:54:03,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-01-09 02:54:03,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566891129] [2025-01-09 02:54:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:03,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 02:54:03,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:03,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 02:54:03,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 02:54:03,075 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:03,101 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2025-01-09 02:54:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 02:54:03,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-09 02:54:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:03,102 INFO L225 Difference]: With dead ends: 44 [2025-01-09 02:54:03,102 INFO L226 Difference]: Without dead ends: 40 [2025-01-09 02:54:03,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 02:54:03,103 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:03,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 108 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-09 02:54:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2025-01-09 02:54:03,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2025-01-09 02:54:03,106 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 14 [2025-01-09 02:54:03,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:03,107 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2025-01-09 02:54:03,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2025-01-09 02:54:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 02:54:03,107 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:03,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:03,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 02:54:03,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:03,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:03,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash -409053841, now seen corresponding path program 1 times [2025-01-09 02:54:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042587521] [2025-01-09 02:54:03,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:03,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 02:54:03,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 02:54:03,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:03,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:54:03,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042587521] [2025-01-09 02:54:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042587521] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:03,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385712124] [2025-01-09 02:54:03,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:03,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:03,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:03,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:03,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 02:54:03,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 02:54:03,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 02:54:03,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:03,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:03,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 02:54:03,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:54:03,501 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 02:54:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385712124] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 02:54:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-09 02:54:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824239982] [2025-01-09 02:54:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:03,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:54:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:03,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:54:03,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-01-09 02:54:03,502 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:03,526 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2025-01-09 02:54:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:54:03,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-09 02:54:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:03,527 INFO L225 Difference]: With dead ends: 62 [2025-01-09 02:54:03,527 INFO L226 Difference]: Without dead ends: 38 [2025-01-09 02:54:03,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-01-09 02:54:03,528 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:03,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 64 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:03,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-09 02:54:03,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2025-01-09 02:54:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2025-01-09 02:54:03,532 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 19 [2025-01-09 02:54:03,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:03,532 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2025-01-09 02:54:03,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:03,532 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2025-01-09 02:54:03,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 02:54:03,533 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:03,533 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:03,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:03,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:03,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:03,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:03,738 INFO L85 PathProgramCache]: Analyzing trace with hash -420083892, now seen corresponding path program 1 times [2025-01-09 02:54:03,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:03,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194690363] [2025-01-09 02:54:03,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:03,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:03,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 02:54:03,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 02:54:03,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:03,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 02:54:03,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194690363] [2025-01-09 02:54:03,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194690363] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:03,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120337896] [2025-01-09 02:54:03,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:03,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:03,857 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:03,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 02:54:03,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 02:54:03,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 02:54:03,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:03,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:03,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 02:54:03,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 02:54:03,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:04,182 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-01-09 02:54:04,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2025-01-09 02:54:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:54:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120337896] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:04,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 02:54:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 8] total 12 [2025-01-09 02:54:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757567876] [2025-01-09 02:54:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:04,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 02:54:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:04,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 02:54:04,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-09 02:54:04,226 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:04,361 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2025-01-09 02:54:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 02:54:04,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 02:54:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:04,363 INFO L225 Difference]: With dead ends: 56 [2025-01-09 02:54:04,363 INFO L226 Difference]: Without dead ends: 36 [2025-01-09 02:54:04,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2025-01-09 02:54:04,363 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:04,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 118 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:04,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-01-09 02:54:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2025-01-09 02:54:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2025-01-09 02:54:04,369 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 21 [2025-01-09 02:54:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:04,370 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2025-01-09 02:54:04,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2025-01-09 02:54:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 02:54:04,371 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:04,371 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:04,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:04,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:04,572 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:04,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1756147660, now seen corresponding path program 1 times [2025-01-09 02:54:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:04,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556955415] [2025-01-09 02:54:04,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:04,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:04,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 02:54:04,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 02:54:04,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:04,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 02:54:04,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556955415] [2025-01-09 02:54:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556955415] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315054111] [2025-01-09 02:54:04,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:04,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:04,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:04,689 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:04,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 02:54:04,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 02:54:04,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 02:54:04,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:04,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:04,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 02:54:04,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:04,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-01-09 02:54:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 02:54:04,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:04,905 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-01-09 02:54:04,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2025-01-09 02:54:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 02:54:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315054111] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:04,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:04,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 7] total 12 [2025-01-09 02:54:04,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670100415] [2025-01-09 02:54:04,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:04,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 02:54:04,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:04,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 02:54:04,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-01-09 02:54:04,924 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:05,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:05,027 INFO L93 Difference]: Finished difference Result 111 states and 155 transitions. [2025-01-09 02:54:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 02:54:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-09 02:54:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:05,028 INFO L225 Difference]: With dead ends: 111 [2025-01-09 02:54:05,028 INFO L226 Difference]: Without dead ends: 80 [2025-01-09 02:54:05,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2025-01-09 02:54:05,029 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 136 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:05,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 124 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:54:05,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-01-09 02:54:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 38. [2025-01-09 02:54:05,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2025-01-09 02:54:05,034 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 22 [2025-01-09 02:54:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:05,034 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2025-01-09 02:54:05,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:05,034 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2025-01-09 02:54:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 02:54:05,034 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:05,034 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:05,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:05,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 02:54:05,238 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:05,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:05,238 INFO L85 PathProgramCache]: Analyzing trace with hash 466218417, now seen corresponding path program 1 times [2025-01-09 02:54:05,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:05,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511745168] [2025-01-09 02:54:05,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:05,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:05,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 02:54:05,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 02:54:05,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:05,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:05,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 02:54:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511745168] [2025-01-09 02:54:05,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511745168] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:05,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953281780] [2025-01-09 02:54:05,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:05,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:05,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:05,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:05,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 02:54:05,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 02:54:05,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 02:54:05,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:05,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:05,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 02:54:05,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:05,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 59 [2025-01-09 02:54:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 02:54:07,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:08,150 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-01-09 02:54:08,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2025-01-09 02:54:08,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 02:54:08,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953281780] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:08,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:08,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 22 [2025-01-09 02:54:08,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512689999] [2025-01-09 02:54:08,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:08,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 02:54:08,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:08,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 02:54:08,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-01-09 02:54:08,221 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:12,490 INFO L93 Difference]: Finished difference Result 141 states and 195 transitions. [2025-01-09 02:54:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 02:54:12,491 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-09 02:54:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:12,498 INFO L225 Difference]: With dead ends: 141 [2025-01-09 02:54:12,501 INFO L226 Difference]: Without dead ends: 108 [2025-01-09 02:54:12,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=249, Invalid=1157, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 02:54:12,502 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 212 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:12,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 229 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 02:54:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-01-09 02:54:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 40. [2025-01-09 02:54:12,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2025-01-09 02:54:12,521 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 25 [2025-01-09 02:54:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:12,522 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2025-01-09 02:54:12,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2025-01-09 02:54:12,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 02:54:12,524 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:12,524 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:12,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:12,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:12,729 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:12,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1040575300, now seen corresponding path program 1 times [2025-01-09 02:54:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:12,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639122977] [2025-01-09 02:54:12,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:12,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:12,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 02:54:12,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 02:54:12,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:12,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 02:54:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639122977] [2025-01-09 02:54:12,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639122977] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015285266] [2025-01-09 02:54:12,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:12,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:12,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:12,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:12,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 02:54:12,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 02:54:12,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 02:54:12,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:12,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:12,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 02:54:12,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-09 02:54:12,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 02:54:12,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015285266] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:12,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 02:54:12,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 8 [2025-01-09 02:54:12,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618724824] [2025-01-09 02:54:12,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:12,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 02:54:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:12,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 02:54:12,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 02:54:12,928 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:12,949 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2025-01-09 02:54:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 02:54:12,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-09 02:54:12,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:12,950 INFO L225 Difference]: With dead ends: 70 [2025-01-09 02:54:12,950 INFO L226 Difference]: Without dead ends: 44 [2025-01-09 02:54:12,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-01-09 02:54:12,951 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:12,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-01-09 02:54:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-01-09 02:54:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2025-01-09 02:54:12,964 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 28 [2025-01-09 02:54:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:12,964 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2025-01-09 02:54:12,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:12,965 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2025-01-09 02:54:12,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 02:54:12,966 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:12,966 INFO L218 NwaCegarLoop]: trace histogram [3, 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] [2025-01-09 02:54:12,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:13,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 02:54:13,167 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:13,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:13,167 INFO L85 PathProgramCache]: Analyzing trace with hash -770897152, now seen corresponding path program 1 times [2025-01-09 02:54:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:13,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562166980] [2025-01-09 02:54:13,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:13,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:13,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 02:54:13,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 02:54:13,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:13,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:13,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 02:54:13,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562166980] [2025-01-09 02:54:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562166980] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291476308] [2025-01-09 02:54:13,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:13,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:13,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:13,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 02:54:13,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-09 02:54:13,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 02:54:13,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:13,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:13,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 02:54:13,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 02:54:13,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-09 02:54:13,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291476308] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:13,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:13,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 10 [2025-01-09 02:54:13,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744348187] [2025-01-09 02:54:13,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:13,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 02:54:13,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:13,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 02:54:13,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 02:54:13,391 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:13,640 INFO L93 Difference]: Finished difference Result 253 states and 358 transitions. [2025-01-09 02:54:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 02:54:13,640 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-01-09 02:54:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:13,642 INFO L225 Difference]: With dead ends: 253 [2025-01-09 02:54:13,642 INFO L226 Difference]: Without dead ends: 215 [2025-01-09 02:54:13,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2025-01-09 02:54:13,643 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 246 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:13,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 175 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:54:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-01-09 02:54:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 57. [2025-01-09 02:54:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 56 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2025-01-09 02:54:13,658 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 31 [2025-01-09 02:54:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:13,658 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2025-01-09 02:54:13,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2025-01-09 02:54:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 02:54:13,659 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:13,659 INFO L218 NwaCegarLoop]: trace histogram [4, 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] [2025-01-09 02:54:13,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 02:54:13,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:13,863 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:13,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:13,864 INFO L85 PathProgramCache]: Analyzing trace with hash 967755392, now seen corresponding path program 2 times [2025-01-09 02:54:13,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:13,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735989087] [2025-01-09 02:54:13,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:13,876 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 02:54:13,898 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 02:54:13,898 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:13,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-09 02:54:14,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735989087] [2025-01-09 02:54:14,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735989087] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:14,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094655336] [2025-01-09 02:54:14,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:14,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:14,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:14,032 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:14,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 02:54:14,079 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-09 02:54:14,133 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 02:54:14,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:14,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:14,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 02:54:14,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:14,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2025-01-09 02:54:14,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:14,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 47 [2025-01-09 02:54:14,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 89 [2025-01-09 02:54:15,010 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 02:54:15,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:15,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:15,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 84 [2025-01-09 02:54:15,701 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 02:54:15,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094655336] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:15,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:15,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 16] total 35 [2025-01-09 02:54:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442734578] [2025-01-09 02:54:15,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:15,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 02:54:15,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:15,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 02:54:15,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 02:54:15,703 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:21,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:21,809 INFO L93 Difference]: Finished difference Result 556 states and 799 transitions. [2025-01-09 02:54:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2025-01-09 02:54:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-01-09 02:54:21,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:21,811 INFO L225 Difference]: With dead ends: 556 [2025-01-09 02:54:21,811 INFO L226 Difference]: Without dead ends: 506 [2025-01-09 02:54:21,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7607 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3484, Invalid=18866, Unknown=0, NotChecked=0, Total=22350 [2025-01-09 02:54:21,817 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 1281 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:21,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 676 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-09 02:54:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2025-01-09 02:54:21,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 94. [2025-01-09 02:54:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3118279569892473) internal successors, (122), 93 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2025-01-09 02:54:21,840 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 38 [2025-01-09 02:54:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:21,840 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2025-01-09 02:54:21,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4571428571428573) internal successors, (86), 35 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:21,840 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2025-01-09 02:54:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 02:54:21,841 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:21,841 INFO L218 NwaCegarLoop]: trace histogram [5, 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] [2025-01-09 02:54:21,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:22,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:22,041 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:22,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:22,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1462591202, now seen corresponding path program 1 times [2025-01-09 02:54:22,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:22,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251485104] [2025-01-09 02:54:22,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:22,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:22,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:22,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:22,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:22,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-09 02:54:22,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251485104] [2025-01-09 02:54:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251485104] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258163621] [2025-01-09 02:54:22,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:22,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:22,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:22,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:22,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 02:54:22,902 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:22,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:22,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:22,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:22,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-09 02:54:22,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:23,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-09 02:54:23,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-09 02:54:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 02:54:23,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:23,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:23,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2025-01-09 02:54:23,774 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-01-09 02:54:23,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 9 [2025-01-09 02:54:23,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:23,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 3 [2025-01-09 02:54:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 02:54:23,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258163621] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:23,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 13] total 30 [2025-01-09 02:54:23,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283886676] [2025-01-09 02:54:23,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:23,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 02:54:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:23,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 02:54:23,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2025-01-09 02:54:23,858 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:26,804 INFO L93 Difference]: Finished difference Result 290 states and 382 transitions. [2025-01-09 02:54:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-01-09 02:54:26,805 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 02:54:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:26,806 INFO L225 Difference]: With dead ends: 290 [2025-01-09 02:54:26,806 INFO L226 Difference]: Without dead ends: 215 [2025-01-09 02:54:26,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1121, Invalid=6189, Unknown=0, NotChecked=0, Total=7310 [2025-01-09 02:54:26,807 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 354 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:26,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 439 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 02:54:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-01-09 02:54:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 135. [2025-01-09 02:54:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 134 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2025-01-09 02:54:26,842 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 39 [2025-01-09 02:54:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:26,842 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2025-01-09 02:54:26,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 30 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2025-01-09 02:54:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 02:54:26,843 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:26,843 INFO L218 NwaCegarLoop]: trace histogram [5, 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] [2025-01-09 02:54:26,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:27,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:27,044 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:27,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1143432352, now seen corresponding path program 1 times [2025-01-09 02:54:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:27,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943973715] [2025-01-09 02:54:27,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:27,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:27,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:27,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:27,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:27,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 02:54:27,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:27,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943973715] [2025-01-09 02:54:27,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943973715] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:27,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550113707] [2025-01-09 02:54:27,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:27,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:27,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:27,276 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:27,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 02:54:27,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:27,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:27,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:27,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:27,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 02:54:27,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 02:54:27,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 02:54:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550113707] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:27,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:27,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 12] total 26 [2025-01-09 02:54:27,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746699380] [2025-01-09 02:54:27,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:27,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 02:54:27,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:27,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 02:54:27,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2025-01-09 02:54:27,756 INFO L87 Difference]: Start difference. First operand 135 states and 166 transitions. Second operand has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:28,350 INFO L93 Difference]: Finished difference Result 289 states and 357 transitions. [2025-01-09 02:54:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 02:54:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 02:54:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:28,352 INFO L225 Difference]: With dead ends: 289 [2025-01-09 02:54:28,352 INFO L226 Difference]: Without dead ends: 285 [2025-01-09 02:54:28,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 02:54:28,354 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 141 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:28,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 388 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:54:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2025-01-09 02:54:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 181. [2025-01-09 02:54:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.2555555555555555) internal successors, (226), 180 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 226 transitions. [2025-01-09 02:54:28,407 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 226 transitions. Word has length 39 [2025-01-09 02:54:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:28,407 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 226 transitions. [2025-01-09 02:54:28,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.9615384615384617) internal successors, (77), 26 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 226 transitions. [2025-01-09 02:54:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 02:54:28,408 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:28,408 INFO L218 NwaCegarLoop]: trace histogram [5, 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] [2025-01-09 02:54:28,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:28,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 02:54:28,608 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:28,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1844496930, now seen corresponding path program 1 times [2025-01-09 02:54:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205901448] [2025-01-09 02:54:28,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:28,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:28,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:28,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:28,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 02:54:29,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205901448] [2025-01-09 02:54:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205901448] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786330885] [2025-01-09 02:54:29,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:29,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:29,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:29,343 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:29,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 02:54:29,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:29,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:29,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:29,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:29,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 02:54:29,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:29,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-09 02:54:29,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-01-09 02:54:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 02:54:29,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:29,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:29,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 55 [2025-01-09 02:54:29,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:29,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2025-01-09 02:54:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 02:54:30,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786330885] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:30,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:30,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 31 [2025-01-09 02:54:30,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652239177] [2025-01-09 02:54:30,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:30,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 02:54:30,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:30,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 02:54:30,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2025-01-09 02:54:30,053 INFO L87 Difference]: Start difference. First operand 181 states and 226 transitions. Second operand has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:30,740 INFO L93 Difference]: Finished difference Result 363 states and 450 transitions. [2025-01-09 02:54:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-09 02:54:30,740 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 02:54:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:30,741 INFO L225 Difference]: With dead ends: 363 [2025-01-09 02:54:30,742 INFO L226 Difference]: Without dead ends: 307 [2025-01-09 02:54:30,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=539, Invalid=2217, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 02:54:30,742 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 173 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:30,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 258 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:54:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2025-01-09 02:54:30,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 218. [2025-01-09 02:54:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.2672811059907834) internal successors, (275), 217 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 275 transitions. [2025-01-09 02:54:30,800 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 275 transitions. Word has length 39 [2025-01-09 02:54:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:30,800 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 275 transitions. [2025-01-09 02:54:30,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 275 transitions. [2025-01-09 02:54:30,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 02:54:30,801 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:30,801 INFO L218 NwaCegarLoop]: trace histogram [5, 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] [2025-01-09 02:54:30,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 02:54:31,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-09 02:54:31,002 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:31,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:31,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1362287070, now seen corresponding path program 1 times [2025-01-09 02:54:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:31,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777720259] [2025-01-09 02:54:31,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:31,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:31,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:31,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:31,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-01-09 02:54:31,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:31,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777720259] [2025-01-09 02:54:31,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777720259] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:31,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142512648] [2025-01-09 02:54:31,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:31,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:31,620 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:31,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 02:54:31,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 02:54:31,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:31,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:31,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:31,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-01-09 02:54:31,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:31,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2025-01-09 02:54:31,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-01-09 02:54:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-01-09 02:54:31,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:32,254 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 02:54:32,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2025-01-09 02:54:32,263 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2025-01-09 02:54:32,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2025-01-09 02:54:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 02:54:32,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142512648] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:32,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:32,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 35 [2025-01-09 02:54:32,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852130410] [2025-01-09 02:54:32,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:32,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 02:54:32,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:32,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 02:54:32,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 02:54:32,323 INFO L87 Difference]: Start difference. First operand 218 states and 275 transitions. Second operand has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 35 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:33,011 INFO L93 Difference]: Finished difference Result 333 states and 415 transitions. [2025-01-09 02:54:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 02:54:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 35 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 02:54:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:33,013 INFO L225 Difference]: With dead ends: 333 [2025-01-09 02:54:33,013 INFO L226 Difference]: Without dead ends: 303 [2025-01-09 02:54:33,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2025-01-09 02:54:33,014 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 127 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:33,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 319 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:54:33,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2025-01-09 02:54:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 229. [2025-01-09 02:54:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.2543859649122806) internal successors, (286), 228 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 286 transitions. [2025-01-09 02:54:33,086 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 286 transitions. Word has length 39 [2025-01-09 02:54:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:33,087 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 286 transitions. [2025-01-09 02:54:33,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.4285714285714284) internal successors, (85), 35 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 286 transitions. [2025-01-09 02:54:33,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 02:54:33,087 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:33,088 INFO L218 NwaCegarLoop]: trace histogram [5, 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] [2025-01-09 02:54:33,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 02:54:33,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:33,292 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:33,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1422269022, now seen corresponding path program 2 times [2025-01-09 02:54:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:33,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875815892] [2025-01-09 02:54:33,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:33,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:33,302 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 02:54:33,331 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:33,331 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:33,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 02:54:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875815892] [2025-01-09 02:54:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875815892] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64353129] [2025-01-09 02:54:34,098 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:34,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:34,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:34,100 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:34,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 02:54:34,165 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-01-09 02:54:34,213 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:54:34,213 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:34,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:34,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 02:54:34,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:34,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2025-01-09 02:54:34,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2025-01-09 02:54:34,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2025-01-09 02:54:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 02:54:34,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:35,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:35,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 42 [2025-01-09 02:54:35,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 02:54:35,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64353129] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:35,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:35,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 34 [2025-01-09 02:54:35,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488998486] [2025-01-09 02:54:35,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:35,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 02:54:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:35,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 02:54:35,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=906, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 02:54:35,275 INFO L87 Difference]: Start difference. First operand 229 states and 286 transitions. Second operand has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:36,318 INFO L93 Difference]: Finished difference Result 423 states and 530 transitions. [2025-01-09 02:54:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 02:54:36,318 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 02:54:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:36,320 INFO L225 Difference]: With dead ends: 423 [2025-01-09 02:54:36,320 INFO L226 Difference]: Without dead ends: 380 [2025-01-09 02:54:36,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=433, Invalid=1547, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 02:54:36,320 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 158 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:36,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 285 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:54:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2025-01-09 02:54:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 269. [2025-01-09 02:54:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.257462686567164) internal successors, (337), 268 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 337 transitions. [2025-01-09 02:54:36,394 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 337 transitions. Word has length 39 [2025-01-09 02:54:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:36,394 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 337 transitions. [2025-01-09 02:54:36,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 337 transitions. [2025-01-09 02:54:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-09 02:54:36,395 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:36,395 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:36,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 02:54:36,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:36,596 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:36,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:36,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1012482834, now seen corresponding path program 2 times [2025-01-09 02:54:36,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:36,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16728207] [2025-01-09 02:54:36,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:36,610 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-09 02:54:36,717 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 02:54:36,717 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:36,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 02:54:37,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:37,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16728207] [2025-01-09 02:54:37,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16728207] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:37,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519036500] [2025-01-09 02:54:37,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:37,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:37,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:37,136 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:37,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 02:54:37,194 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-09 02:54:37,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 02:54:37,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:37,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:37,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-01-09 02:54:37,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:37,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2025-01-09 02:54:39,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 68 [2025-01-09 02:54:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 02:54:39,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:40,163 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2025-01-09 02:54:40,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 40 [2025-01-09 02:54:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-09 02:54:40,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519036500] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:40,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:40,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 23] total 53 [2025-01-09 02:54:40,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950369220] [2025-01-09 02:54:40,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:40,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-09 02:54:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:40,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-09 02:54:40,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=2304, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 02:54:40,201 INFO L87 Difference]: Start difference. First operand 269 states and 337 transitions. Second operand has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:43,329 INFO L93 Difference]: Finished difference Result 591 states and 715 transitions. [2025-01-09 02:54:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-01-09 02:54:43,330 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-09 02:54:43,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:43,332 INFO L225 Difference]: With dead ends: 591 [2025-01-09 02:54:43,332 INFO L226 Difference]: Without dead ends: 513 [2025-01-09 02:54:43,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1567, Invalid=6443, Unknown=0, NotChecked=0, Total=8010 [2025-01-09 02:54:43,333 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 641 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:43,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 753 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 02:54:43,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2025-01-09 02:54:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 250. [2025-01-09 02:54:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.2610441767068272) internal successors, (314), 249 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 314 transitions. [2025-01-09 02:54:43,408 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 314 transitions. Word has length 49 [2025-01-09 02:54:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:43,408 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 314 transitions. [2025-01-09 02:54:43,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 314 transitions. [2025-01-09 02:54:43,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-09 02:54:43,409 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:43,409 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:43,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 02:54:43,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 02:54:43,613 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:43,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1607551476, now seen corresponding path program 3 times [2025-01-09 02:54:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:43,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265292096] [2025-01-09 02:54:43,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:54:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:43,620 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 6 equivalence classes. [2025-01-09 02:54:43,649 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 50 statements. [2025-01-09 02:54:43,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 02:54:43,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-01-09 02:54:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265292096] [2025-01-09 02:54:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265292096] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705958755] [2025-01-09 02:54:44,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:54:44,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:44,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:44,076 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:44,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 02:54:44,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 6 equivalence classes. [2025-01-09 02:54:44,238 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 35 of 50 statements. [2025-01-09 02:54:44,239 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 02:54:44,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:44,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 02:54:44,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:44,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2025-01-09 02:54:44,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2025-01-09 02:54:44,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-01-09 02:54:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 02:54:44,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-01-09 02:54:44,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705958755] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:44,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:44,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 28 [2025-01-09 02:54:44,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082993737] [2025-01-09 02:54:44,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:44,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 02:54:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:44,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 02:54:44,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2025-01-09 02:54:44,674 INFO L87 Difference]: Start difference. First operand 250 states and 314 transitions. Second operand has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:45,038 INFO L93 Difference]: Finished difference Result 350 states and 441 transitions. [2025-01-09 02:54:45,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 02:54:45,038 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-01-09 02:54:45,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:45,040 INFO L225 Difference]: With dead ends: 350 [2025-01-09 02:54:45,040 INFO L226 Difference]: Without dead ends: 346 [2025-01-09 02:54:45,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=836, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 02:54:45,040 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 257 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:45,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 275 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:54:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2025-01-09 02:54:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 267. [2025-01-09 02:54:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.2518796992481203) internal successors, (333), 266 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 333 transitions. [2025-01-09 02:54:45,122 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 333 transitions. Word has length 50 [2025-01-09 02:54:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:45,122 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 333 transitions. [2025-01-09 02:54:45,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.0357142857142856) internal successors, (85), 28 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 333 transitions. [2025-01-09 02:54:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-09 02:54:45,122 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:45,122 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:45,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:45,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 02:54:45,327 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:45,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:45,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1895757502, now seen corresponding path program 4 times [2025-01-09 02:54:45,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:45,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805461872] [2025-01-09 02:54:45,327 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:54:45,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:45,336 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 60 statements into 2 equivalence classes. [2025-01-09 02:54:45,394 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:54:45,394 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:54:45,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 02:54:45,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805461872] [2025-01-09 02:54:45,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805461872] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:45,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081576346] [2025-01-09 02:54:45,599 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:54:45,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:45,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:45,602 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:45,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 02:54:45,668 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 60 statements into 2 equivalence classes. [2025-01-09 02:54:45,694 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:54:45,694 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:54:45,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:45,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 02:54:45,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 02:54:45,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-09 02:54:45,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081576346] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:45,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:45,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 21 [2025-01-09 02:54:45,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652703978] [2025-01-09 02:54:45,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:45,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 02:54:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:45,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 02:54:45,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2025-01-09 02:54:45,972 INFO L87 Difference]: Start difference. First operand 267 states and 333 transitions. Second operand has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:46,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:46,342 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2025-01-09 02:54:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 02:54:46,342 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-01-09 02:54:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:46,344 INFO L225 Difference]: With dead ends: 466 [2025-01-09 02:54:46,344 INFO L226 Difference]: Without dead ends: 462 [2025-01-09 02:54:46,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2025-01-09 02:54:46,345 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 166 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:46,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 648 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:54:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2025-01-09 02:54:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 369. [2025-01-09 02:54:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.2554347826086956) internal successors, (462), 368 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 462 transitions. [2025-01-09 02:54:46,470 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 462 transitions. Word has length 60 [2025-01-09 02:54:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:46,471 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 462 transitions. [2025-01-09 02:54:46,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.190476190476191) internal successors, (109), 21 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 462 transitions. [2025-01-09 02:54:46,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-09 02:54:46,471 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:46,471 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:46,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 02:54:46,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 02:54:46,676 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:46,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1194692924, now seen corresponding path program 5 times [2025-01-09 02:54:46,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:46,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216173177] [2025-01-09 02:54:46,676 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:54:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:46,686 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 60 statements into 6 equivalence classes. [2025-01-09 02:54:46,719 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:54:46,720 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 02:54:46,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-09 02:54:47,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216173177] [2025-01-09 02:54:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216173177] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963060582] [2025-01-09 02:54:47,344 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:54:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:47,346 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:47,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 02:54:47,415 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 60 statements into 6 equivalence classes. [2025-01-09 02:54:47,675 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:54:47,675 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-09 02:54:47,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:47,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-09 02:54:47,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:47,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 38 [2025-01-09 02:54:47,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2025-01-09 02:54:47,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2025-01-09 02:54:47,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-01-09 02:54:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 02:54:47,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:48,199 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 02:54:48,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2025-01-09 02:54:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 02:54:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963060582] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:48,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 14] total 33 [2025-01-09 02:54:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252316582] [2025-01-09 02:54:48,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:48,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-09 02:54:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:48,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-09 02:54:48,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 02:54:48,365 INFO L87 Difference]: Start difference. First operand 369 states and 462 transitions. Second operand has 33 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:49,899 INFO L93 Difference]: Finished difference Result 1340 states and 1728 transitions. [2025-01-09 02:54:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 02:54:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-01-09 02:54:49,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:49,903 INFO L225 Difference]: With dead ends: 1340 [2025-01-09 02:54:49,903 INFO L226 Difference]: Without dead ends: 1038 [2025-01-09 02:54:49,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=612, Invalid=2928, Unknown=0, NotChecked=0, Total=3540 [2025-01-09 02:54:49,905 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 307 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:49,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 454 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 02:54:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2025-01-09 02:54:50,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 699. [2025-01-09 02:54:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.2879656160458453) internal successors, (899), 698 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 899 transitions. [2025-01-09 02:54:50,153 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 899 transitions. Word has length 60 [2025-01-09 02:54:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:50,153 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 899 transitions. [2025-01-09 02:54:50,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.9393939393939394) internal successors, (97), 33 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:54:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 899 transitions. [2025-01-09 02:54:50,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-09 02:54:50,154 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:50,154 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:50,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:50,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:50,355 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:50,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1988830592, now seen corresponding path program 6 times [2025-01-09 02:54:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721959818] [2025-01-09 02:54:50,360 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:54:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:50,369 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 60 statements into 6 equivalence classes. [2025-01-09 02:54:50,463 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:54:50,463 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-09 02:54:50,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 8 proven. 45 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-01-09 02:54:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721959818] [2025-01-09 02:54:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721959818] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:51,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087404991] [2025-01-09 02:54:51,908 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:54:51,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:51,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:51,911 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:54:51,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 02:54:52,010 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 60 statements into 6 equivalence classes. [2025-01-09 02:54:52,139 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:54:52,139 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-09 02:54:52,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:52,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 81 conjuncts are in the unsatisfiable core [2025-01-09 02:54:52,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:53,201 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2025-01-09 02:54:53,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 33 [2025-01-09 02:54:53,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:54:53,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-01-09 02:54:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 56 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 02:54:53,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:54,830 INFO L349 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2025-01-09 02:54:54,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 152 [2025-01-09 02:54:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 27 proven. 37 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-09 02:54:55,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087404991] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:55,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:55,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 24] total 64 [2025-01-09 02:54:55,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620706313] [2025-01-09 02:54:55,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:55,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-09 02:54:55,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:55,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-09 02:54:55,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=3391, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 02:54:55,182 INFO L87 Difference]: Start difference. First operand 699 states and 899 transitions. Second operand has 64 states, 64 states have (on average 2.203125) internal successors, (141), 64 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:02,406 INFO L93 Difference]: Finished difference Result 2363 states and 3002 transitions. [2025-01-09 02:55:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2025-01-09 02:55:02,407 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.203125) internal successors, (141), 64 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-01-09 02:55:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:02,416 INFO L225 Difference]: With dead ends: 2363 [2025-01-09 02:55:02,416 INFO L226 Difference]: Without dead ends: 1913 [2025-01-09 02:55:02,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8226 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3935, Invalid=19321, Unknown=0, NotChecked=0, Total=23256 [2025-01-09 02:55:02,418 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 934 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:02,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 903 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1936 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-09 02:55:02,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2025-01-09 02:55:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 870. [2025-01-09 02:55:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.2600690448791714) internal successors, (1095), 869 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1095 transitions. [2025-01-09 02:55:02,794 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1095 transitions. Word has length 60 [2025-01-09 02:55:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:02,794 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1095 transitions. [2025-01-09 02:55:02,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.203125) internal successors, (141), 64 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:02,794 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1095 transitions. [2025-01-09 02:55:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-09 02:55:02,795 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:02,795 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:02,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 02:55:02,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:02,999 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:02,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:02,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1620997888, now seen corresponding path program 7 times [2025-01-09 02:55:02,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:02,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433823364] [2025-01-09 02:55:02,999 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:55:02,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:03,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-09 02:55:03,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:55:03,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:55:03,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 39 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 02:55:04,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:04,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433823364] [2025-01-09 02:55:04,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433823364] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:04,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995016517] [2025-01-09 02:55:04,005 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:55:04,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:04,010 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:55:04,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 02:55:04,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-01-09 02:55:04,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:55:04,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:55:04,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:04,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 02:55:04,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:55:04,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2025-01-09 02:55:04,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-01-09 02:55:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 46 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 02:55:04,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:55:04,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:04,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2025-01-09 02:55:04,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:04,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2025-01-09 02:55:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 30 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-09 02:55:04,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995016517] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:55:04,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:55:04,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 40 [2025-01-09 02:55:04,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635446808] [2025-01-09 02:55:04,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:55:04,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-01-09 02:55:04,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:55:04,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-01-09 02:55:04,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1312, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 02:55:04,925 INFO L87 Difference]: Start difference. First operand 870 states and 1095 transitions. Second operand has 40 states, 40 states have (on average 3.225) internal successors, (129), 40 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:05,917 INFO L93 Difference]: Finished difference Result 1217 states and 1512 transitions. [2025-01-09 02:55:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 02:55:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 40 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-01-09 02:55:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:05,920 INFO L225 Difference]: With dead ends: 1217 [2025-01-09 02:55:05,920 INFO L226 Difference]: Without dead ends: 875 [2025-01-09 02:55:05,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=411, Invalid=2039, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 02:55:05,921 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 171 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:05,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 424 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 02:55:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2025-01-09 02:55:06,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 770. [2025-01-09 02:55:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.23667100130039) internal successors, (951), 769 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:06,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 951 transitions. [2025-01-09 02:55:06,240 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 951 transitions. Word has length 60 [2025-01-09 02:55:06,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:06,240 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 951 transitions. [2025-01-09 02:55:06,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.225) internal successors, (129), 40 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:06,240 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 951 transitions. [2025-01-09 02:55:06,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-09 02:55:06,241 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:06,241 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:06,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 02:55:06,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:06,447 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:06,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash -110586684, now seen corresponding path program 8 times [2025-01-09 02:55:06,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:06,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369309384] [2025-01-09 02:55:06,448 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:55:06,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:06,455 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 60 statements into 2 equivalence classes. [2025-01-09 02:55:06,501 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:55:06,501 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:55:06,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 49 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-09 02:55:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:07,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369309384] [2025-01-09 02:55:07,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369309384] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:07,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984806171] [2025-01-09 02:55:07,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:55:07,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:07,930 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:55:07,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 02:55:08,004 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 60 statements into 2 equivalence classes. [2025-01-09 02:55:08,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-09 02:55:08,061 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:55:08,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:08,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-09 02:55:08,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:55:08,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2025-01-09 02:55:08,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2025-01-09 02:55:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 02:55:08,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:55:08,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:08,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2025-01-09 02:55:08,760 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:08,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2025-01-09 02:55:08,887 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-09 02:55:08,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984806171] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:55:08,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:55:08,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 13] total 45 [2025-01-09 02:55:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773697201] [2025-01-09 02:55:08,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:55:08,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-01-09 02:55:08,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:55:08,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-01-09 02:55:08,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1719, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 02:55:08,889 INFO L87 Difference]: Start difference. First operand 770 states and 951 transitions. Second operand has 45 states, 45 states have (on average 3.022222222222222) internal successors, (136), 45 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:10,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:10,973 INFO L93 Difference]: Finished difference Result 2130 states and 2722 transitions. [2025-01-09 02:55:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 02:55:10,976 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.022222222222222) internal successors, (136), 45 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-01-09 02:55:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:10,980 INFO L225 Difference]: With dead ends: 2130 [2025-01-09 02:55:10,980 INFO L226 Difference]: Without dead ends: 1649 [2025-01-09 02:55:10,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=740, Invalid=4372, Unknown=0, NotChecked=0, Total=5112 [2025-01-09 02:55:10,985 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 285 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:10,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 548 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 02:55:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2025-01-09 02:55:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1203. [2025-01-09 02:55:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.2470881863560732) internal successors, (1499), 1202 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1499 transitions. [2025-01-09 02:55:11,481 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1499 transitions. Word has length 60 [2025-01-09 02:55:11,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:11,481 INFO L471 AbstractCegarLoop]: Abstraction has 1203 states and 1499 transitions. [2025-01-09 02:55:11,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.022222222222222) internal successors, (136), 45 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:11,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1499 transitions. [2025-01-09 02:55:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 02:55:11,483 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:11,483 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:11,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 02:55:11,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:11,683 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:11,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1136019473, now seen corresponding path program 9 times [2025-01-09 02:55:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969074307] [2025-01-09 02:55:11,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:55:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:11,691 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 9 equivalence classes. [2025-01-09 02:55:11,739 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 02:55:11,739 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 02:55:11,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-01-09 02:55:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969074307] [2025-01-09 02:55:11,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969074307] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820791300] [2025-01-09 02:55:11,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:55:11,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:11,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:11,980 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:55:11,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 02:55:12,061 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 9 equivalence classes. [2025-01-09 02:55:12,307 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 68 of 68 statements. [2025-01-09 02:55:12,308 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 02:55:12,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:12,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 02:55:12,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:55:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-01-09 02:55:12,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:55:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 37 proven. 27 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-01-09 02:55:12,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820791300] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:55:12,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:55:12,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2025-01-09 02:55:12,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531885621] [2025-01-09 02:55:12,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:55:12,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 02:55:12,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:55:12,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 02:55:12,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-01-09 02:55:12,488 INFO L87 Difference]: Start difference. First operand 1203 states and 1499 transitions. Second operand has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:13,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:13,054 INFO L93 Difference]: Finished difference Result 1887 states and 2342 transitions. [2025-01-09 02:55:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 02:55:13,055 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-01-09 02:55:13,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:13,058 INFO L225 Difference]: With dead ends: 1887 [2025-01-09 02:55:13,058 INFO L226 Difference]: Without dead ends: 1030 [2025-01-09 02:55:13,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-01-09 02:55:13,059 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:13,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 230 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:55:13,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2025-01-09 02:55:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1029. [2025-01-09 02:55:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.2305447470817121) internal successors, (1265), 1028 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1265 transitions. [2025-01-09 02:55:13,459 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1265 transitions. Word has length 68 [2025-01-09 02:55:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:13,460 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1265 transitions. [2025-01-09 02:55:13,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1265 transitions. [2025-01-09 02:55:13,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 02:55:13,461 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:13,461 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:13,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 02:55:13,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-09 02:55:13,666 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:13,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash -830701808, now seen corresponding path program 10 times [2025-01-09 02:55:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:13,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629897042] [2025-01-09 02:55:13,667 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:55:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:13,674 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 70 statements into 2 equivalence classes. [2025-01-09 02:55:13,714 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 02:55:13,714 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:55:13,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:14,338 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 61 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 02:55:14,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:14,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629897042] [2025-01-09 02:55:14,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629897042] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:14,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310179472] [2025-01-09 02:55:14,339 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:55:14,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:14,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:14,341 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:55:14,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 02:55:14,419 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 70 statements into 2 equivalence classes. [2025-01-09 02:55:14,452 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 02:55:14,453 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:55:14,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:14,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-01-09 02:55:14,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:55:15,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-09 02:55:15,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:15,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 11 [2025-01-09 02:55:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 33 proven. 79 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 02:55:15,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:55:15,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:15,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 95 [2025-01-09 02:55:16,819 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2025-01-09 02:55:16,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 39 [2025-01-09 02:55:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-01-09 02:55:16,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310179472] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:55:16,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:55:16,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24, 18] total 53 [2025-01-09 02:55:16,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623261307] [2025-01-09 02:55:16,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:55:16,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-09 02:55:16,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:55:16,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-09 02:55:16,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=2434, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 02:55:16,951 INFO L87 Difference]: Start difference. First operand 1029 states and 1265 transitions. Second operand has 53 states, 53 states have (on average 2.8679245283018866) internal successors, (152), 53 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:18,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:18,929 INFO L93 Difference]: Finished difference Result 1343 states and 1652 transitions. [2025-01-09 02:55:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 02:55:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.8679245283018866) internal successors, (152), 53 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-01-09 02:55:18,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:18,933 INFO L225 Difference]: With dead ends: 1343 [2025-01-09 02:55:18,933 INFO L226 Difference]: Without dead ends: 1145 [2025-01-09 02:55:18,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=769, Invalid=5083, Unknown=0, NotChecked=0, Total=5852 [2025-01-09 02:55:18,938 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 207 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:18,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 974 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 02:55:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2025-01-09 02:55:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 959. [2025-01-09 02:55:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.2379958246346556) internal successors, (1186), 958 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:19,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1186 transitions. [2025-01-09 02:55:19,326 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1186 transitions. Word has length 70 [2025-01-09 02:55:19,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:19,326 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1186 transitions. [2025-01-09 02:55:19,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.8679245283018866) internal successors, (152), 53 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1186 transitions. [2025-01-09 02:55:19,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 02:55:19,335 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:19,335 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:19,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-09 02:55:19,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 02:55:19,536 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:19,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash 201202028, now seen corresponding path program 11 times [2025-01-09 02:55:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:19,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058392708] [2025-01-09 02:55:19,536 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:55:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:19,546 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 71 statements into 9 equivalence classes. [2025-01-09 02:55:19,596 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 02:55:19,596 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-09 02:55:19,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 107 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-01-09 02:55:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:20,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058392708] [2025-01-09 02:55:20,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058392708] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:20,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804002259] [2025-01-09 02:55:20,591 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:55:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:20,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:20,593 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:55:20,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 02:55:20,683 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 71 statements into 9 equivalence classes. [2025-01-09 02:55:21,188 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 02:55:21,188 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-09 02:55:21,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:21,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 02:55:21,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:55:21,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2025-01-09 02:55:21,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2025-01-09 02:55:21,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-09 02:55:21,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:21,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2025-01-09 02:55:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 02:55:21,849 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:55:22,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:22,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 57 [2025-01-09 02:55:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-01-09 02:55:23,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804002259] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:55:23,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:55:23,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 18] total 60 [2025-01-09 02:55:23,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041970093] [2025-01-09 02:55:23,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:55:23,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-01-09 02:55:23,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:55:23,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-01-09 02:55:23,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=3173, Unknown=0, NotChecked=0, Total=3540 [2025-01-09 02:55:23,214 INFO L87 Difference]: Start difference. First operand 959 states and 1186 transitions. Second operand has 60 states, 60 states have (on average 2.65) internal successors, (159), 60 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:27,534 INFO L93 Difference]: Finished difference Result 3688 states and 4728 transitions. [2025-01-09 02:55:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-01-09 02:55:27,535 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.65) internal successors, (159), 60 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2025-01-09 02:55:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:27,546 INFO L225 Difference]: With dead ends: 3688 [2025-01-09 02:55:27,547 INFO L226 Difference]: Without dead ends: 2826 [2025-01-09 02:55:27,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4054 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1268, Invalid=12072, Unknown=0, NotChecked=0, Total=13340 [2025-01-09 02:55:27,549 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 624 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:27,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1812 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 02:55:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2025-01-09 02:55:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1367. [2025-01-09 02:55:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1366 states have (on average 1.232796486090776) internal successors, (1684), 1366 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1684 transitions. [2025-01-09 02:55:28,145 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1684 transitions. Word has length 71 [2025-01-09 02:55:28,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:28,145 INFO L471 AbstractCegarLoop]: Abstraction has 1367 states and 1684 transitions. [2025-01-09 02:55:28,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.65) internal successors, (159), 60 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:55:28,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1684 transitions. [2025-01-09 02:55:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 02:55:28,148 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:28,148 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:28,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-09 02:55:28,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-09 02:55:28,349 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:28,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -910241752, now seen corresponding path program 12 times [2025-01-09 02:55:28,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:28,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992840233] [2025-01-09 02:55:28,349 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:55:28,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:28,359 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 71 statements into 9 equivalence classes. [2025-01-09 02:55:28,402 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 60 of 71 statements. [2025-01-09 02:55:28,402 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 02:55:28,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:28,780 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-01-09 02:55:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992840233] [2025-01-09 02:55:28,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992840233] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061319738] [2025-01-09 02:55:28,780 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:55:28,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:28,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:28,785 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:55:28,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 02:55:28,870 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 71 statements into 9 equivalence classes. [2025-01-09 02:55:29,073 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 60 of 71 statements. [2025-01-09 02:55:29,074 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 02:55:29,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:29,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 98 conjuncts are in the unsatisfiable core [2025-01-09 02:55:29,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:55:29,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2025-01-09 02:55:29,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2025-01-09 02:55:29,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 02:55:29,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 02:55:29,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 02:55:30,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 70 [2025-01-09 02:55:31,004 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 02:55:31,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 44 treesize of output 20 [2025-01-09 02:55:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-09 02:55:31,006 INFO L312 TraceCheckSpWp]: Computing backward predicates...