./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/combinations/Problem05_label43+token_ring.02.cil-2.c -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 c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 17:09:24,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 17:09:24,259 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 17:09:24,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 17:09:24,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 17:09:24,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 17:09:24,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 17:09:24,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 17:09:24,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 17:09:24,296 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 17:09:24,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 17:09:24,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 17:09:24,297 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 17:09:24,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 17:09:24,297 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 17:09:24,297 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 17:09:24,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 17:09:24,298 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 17:09:24,298 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 17:09:24,298 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 17:09:24,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 17:09:24,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 17:09:24,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 17:09:24,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 17:09:24,299 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 17:09:24,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 17:09:24,299 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 17:09:24,299 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 17:09:24,299 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 17:09:24,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 17:09:24,299 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 17:09:24,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 17:09:24,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:09:24,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 17:09:24,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 17:09:24,300 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 17:09:24,300 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 17:09:24,300 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 17:09:24,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 17:09:24,301 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 17:09:24,301 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 17:09:24,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 17:09:24,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 17:09:24,301 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 -> c7c4bef8c60b810569a22d8a73144498437260dfbc0e4b7320d169bed033790e [2025-02-05 17:09:24,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 17:09:24,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 17:09:24,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 17:09:24,603 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 17:09:24,603 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 17:09:24,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c [2025-02-05 17:09:25,991 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6e9250bb7/5124942bd3414919ab9a8797a6d25efb/FLAG07f4c72f3 [2025-02-05 17:09:26,671 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 17:09:26,672 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-2.c [2025-02-05 17:09:26,723 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6e9250bb7/5124942bd3414919ab9a8797a6d25efb/FLAG07f4c72f3 [2025-02-05 17:09:26,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6e9250bb7/5124942bd3414919ab9a8797a6d25efb [2025-02-05 17:09:26,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 17:09:26,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 17:09:26,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 17:09:26,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 17:09:26,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 17:09:26,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:09:26" (1/1) ... [2025-02-05 17:09:26,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d297a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:26, skipping insertion in model container [2025-02-05 17:09:26,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 05:09:26" (1/1) ... [2025-02-05 17:09:26,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 17:09:28,329 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/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2025-02-05 17:09:28,361 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/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2025-02-05 17:09:28,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:09:28,574 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 17:09:29,185 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/combinations/Problem05_label43+token_ring.02.cil-2.c[381679,381692] [2025-02-05 17:09:29,192 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/combinations/Problem05_label43+token_ring.02.cil-2.c[383339,383352] [2025-02-05 17:09:29,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 17:09:29,270 INFO L204 MainTranslator]: Completed translation [2025-02-05 17:09:29,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29 WrapperNode [2025-02-05 17:09:29,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 17:09:29,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 17:09:29,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 17:09:29,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 17:09:29,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:29,389 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:29,865 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12621 [2025-02-05 17:09:29,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 17:09:29,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 17:09:29,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 17:09:29,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 17:09:29,887 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:29,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:29,984 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,091 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 17:09:30,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,267 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,391 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 17:09:30,393 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 17:09:30,393 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 17:09:30,393 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 17:09:30,394 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (1/1) ... [2025-02-05 17:09:30,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 17:09:30,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:30,491 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) [2025-02-05 17:09:30,502 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 [2025-02-05 17:09:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 17:09:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure error [2025-02-05 17:09:30,523 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2025-02-05 17:09:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 17:09:30,523 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 17:09:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 17:09:30,524 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 17:09:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2025-02-05 17:09:30,524 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2025-02-05 17:09:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 17:09:30,524 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 17:09:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 17:09:30,524 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 17:09:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 17:09:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 17:09:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 17:09:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 17:09:30,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 17:09:30,630 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 17:09:30,632 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 17:09:38,617 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L4481: havoc calculate_output3_#t~ret16#1; [2025-02-05 17:09:38,618 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L7469: havoc calculate_output5_#t~ret18#1; [2025-02-05 17:09:38,619 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3033: havoc calculate_output2_#t~ret15#1; [2025-02-05 17:09:38,620 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L10440: havoc calculate_output7_#t~ret20#1; [2025-02-05 17:09:38,620 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L8922: havoc calculate_output6_#t~ret19#1; [2025-02-05 17:09:38,620 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L6035: havoc calculate_output4_#t~ret17#1; [2025-02-05 17:09:38,621 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1543: havoc calculate_output_#t~ret14#1; [2025-02-05 17:09:38,899 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2025-02-05 17:09:38,899 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 17:09:38,983 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 17:09:38,983 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 17:09:38,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:09:38 BoogieIcfgContainer [2025-02-05 17:09:38,984 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 17:09:38,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 17:09:38,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 17:09:38,990 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 17:09:38,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 05:09:26" (1/3) ... [2025-02-05 17:09:38,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b25fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:09:38, skipping insertion in model container [2025-02-05 17:09:38,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 05:09:29" (2/3) ... [2025-02-05 17:09:38,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b25fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 05:09:38, skipping insertion in model container [2025-02-05 17:09:38,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 05:09:38" (3/3) ... [2025-02-05 17:09:38,993 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-2.c [2025-02-05 17:09:39,008 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 17:09:39,010 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.02.cil-2.c that has 8 procedures, 2329 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2025-02-05 17:09:39,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 17:09:39,149 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;@3cad79d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 17:09:39,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-05 17:09:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 2329 states, 2301 states have (on average 1.8526727509778358) internal successors, (4263), 2306 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2025-02-05 17:09:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 17:09:39,180 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:39,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:39,181 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:39,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1010130643, now seen corresponding path program 1 times [2025-02-05 17:09:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:39,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509247204] [2025-02-05 17:09:39,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:39,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:39,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-05 17:09:39,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 17:09:39,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:39,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:09:39,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:39,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509247204] [2025-02-05 17:09:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509247204] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:39,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:09:39,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410318388] [2025-02-05 17:09:39,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:39,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:09:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:39,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:09:39,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:09:39,764 INFO L87 Difference]: Start difference. First operand has 2329 states, 2301 states have (on average 1.8526727509778358) internal successors, (4263), 2306 states have internal predecessors, (4263), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:40,358 INFO L93 Difference]: Finished difference Result 4651 states and 8593 transitions. [2025-02-05 17:09:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:09:40,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-02-05 17:09:40,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:40,393 INFO L225 Difference]: With dead ends: 4651 [2025-02-05 17:09:40,394 INFO L226 Difference]: Without dead ends: 2267 [2025-02-05 17:09:40,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:40,410 INFO L435 NwaCegarLoop]: 4173 mSDtfsCounter, 4267 mSDsluCounter, 8287 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4277 SdHoareTripleChecker+Valid, 12460 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:40,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4277 Valid, 12460 Invalid, 193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:09:40,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2025-02-05 17:09:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2261. [2025-02-05 17:09:40,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2235 states have (on average 1.8460850111856824) internal successors, (4126), 2238 states have internal predecessors, (4126), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-02-05 17:09:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 4160 transitions. [2025-02-05 17:09:40,581 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 4160 transitions. Word has length 69 [2025-02-05 17:09:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:40,582 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 4160 transitions. [2025-02-05 17:09:40,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 4160 transitions. [2025-02-05 17:09:40,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 17:09:40,588 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:40,588 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:40,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 17:09:40,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:40,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash -316737938, now seen corresponding path program 1 times [2025-02-05 17:09:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:40,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934188231] [2025-02-05 17:09:40,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:40,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:40,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-05 17:09:40,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 17:09:40,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:40,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:09:40,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:40,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934188231] [2025-02-05 17:09:40,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934188231] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:40,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:40,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:09:40,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220312088] [2025-02-05 17:09:40,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:40,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:09:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:40,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:09:40,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:40,844 INFO L87 Difference]: Start difference. First operand 2261 states and 4160 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:41,381 INFO L93 Difference]: Finished difference Result 2535 states and 4566 transitions. [2025-02-05 17:09:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:09:41,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-02-05 17:09:41,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:41,398 INFO L225 Difference]: With dead ends: 2535 [2025-02-05 17:09:41,398 INFO L226 Difference]: Without dead ends: 2405 [2025-02-05 17:09:41,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:09:41,401 INFO L435 NwaCegarLoop]: 4218 mSDtfsCounter, 4260 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 16868 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:41,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4270 Valid, 16868 Invalid, 480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 17:09:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2025-02-05 17:09:41,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2391. [2025-02-05 17:09:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2391 states, 2344 states have (on average 1.828924914675768) internal successors, (4287), 2349 states have internal predecessors, (4287), 31 states have call successors, (31), 13 states have call predecessors, (31), 14 states have return successors, (36), 30 states have call predecessors, (36), 29 states have call successors, (36) [2025-02-05 17:09:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2391 states to 2391 states and 4354 transitions. [2025-02-05 17:09:41,485 INFO L78 Accepts]: Start accepts. Automaton has 2391 states and 4354 transitions. Word has length 69 [2025-02-05 17:09:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:41,486 INFO L471 AbstractCegarLoop]: Abstraction has 2391 states and 4354 transitions. [2025-02-05 17:09:41,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2391 states and 4354 transitions. [2025-02-05 17:09:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 17:09:41,490 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:41,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:41,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 17:09:41,491 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:41,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash 121271565, now seen corresponding path program 1 times [2025-02-05 17:09:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194327412] [2025-02-05 17:09:41,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:41,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-05 17:09:41,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 17:09:41,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:41,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:09:41,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:41,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194327412] [2025-02-05 17:09:41,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194327412] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:41,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:41,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:09:41,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519151627] [2025-02-05 17:09:41,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:41,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:09:41,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:41,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:09:41,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:41,659 INFO L87 Difference]: Start difference. First operand 2391 states and 4354 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:42,230 INFO L93 Difference]: Finished difference Result 2949 states and 5178 transitions. [2025-02-05 17:09:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:09:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-02-05 17:09:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:42,256 INFO L225 Difference]: With dead ends: 2949 [2025-02-05 17:09:42,260 INFO L226 Difference]: Without dead ends: 2691 [2025-02-05 17:09:42,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:09:42,267 INFO L435 NwaCegarLoop]: 4191 mSDtfsCounter, 4331 mSDsluCounter, 12580 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 16771 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:42,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 16771 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 17:09:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2025-02-05 17:09:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2631. [2025-02-05 17:09:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2548 states have (on average 1.7998430141287285) internal successors, (4586), 2557 states have internal predecessors, (4586), 51 states have call successors, (51), 25 states have call predecessors, (51), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-02-05 17:09:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4709 transitions. [2025-02-05 17:09:42,466 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4709 transitions. Word has length 69 [2025-02-05 17:09:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:42,466 INFO L471 AbstractCegarLoop]: Abstraction has 2631 states and 4709 transitions. [2025-02-05 17:09:42,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4709 transitions. [2025-02-05 17:09:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 17:09:42,469 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:42,469 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:42,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 17:09:42,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:42,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:42,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1804261746, now seen corresponding path program 1 times [2025-02-05 17:09:42,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:42,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752792127] [2025-02-05 17:09:42,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:42,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:42,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-05 17:09:42,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 17:09:42,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:42,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:42,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:09:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752792127] [2025-02-05 17:09:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752792127] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:42,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 17:09:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045246545] [2025-02-05 17:09:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:42,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 17:09:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:42,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 17:09:42,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 17:09:42,736 INFO L87 Difference]: Start difference. First operand 2631 states and 4709 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:43,048 INFO L93 Difference]: Finished difference Result 3158 states and 5505 transitions. [2025-02-05 17:09:43,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:09:43,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-02-05 17:09:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:43,067 INFO L225 Difference]: With dead ends: 3158 [2025-02-05 17:09:43,067 INFO L226 Difference]: Without dead ends: 2658 [2025-02-05 17:09:43,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:43,073 INFO L435 NwaCegarLoop]: 4099 mSDtfsCounter, 4193 mSDsluCounter, 8138 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4203 SdHoareTripleChecker+Valid, 12237 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:43,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4203 Valid, 12237 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 17:09:43,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2025-02-05 17:09:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2631. [2025-02-05 17:09:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2548 states have (on average 1.7978806907378335) internal successors, (4581), 2557 states have internal predecessors, (4581), 51 states have call successors, (51), 25 states have call predecessors, (51), 30 states have return successors, (72), 52 states have call predecessors, (72), 49 states have call successors, (72) [2025-02-05 17:09:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 4704 transitions. [2025-02-05 17:09:43,187 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 4704 transitions. Word has length 69 [2025-02-05 17:09:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:43,187 INFO L471 AbstractCegarLoop]: Abstraction has 2631 states and 4704 transitions. [2025-02-05 17:09:43,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 4704 transitions. [2025-02-05 17:09:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 17:09:43,189 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:43,189 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:43,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 17:09:43,190 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:43,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:43,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1035091731, now seen corresponding path program 1 times [2025-02-05 17:09:43,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:43,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019430081] [2025-02-05 17:09:43,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:43,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-05 17:09:43,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 17:09:43,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:43,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:09:43,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019430081] [2025-02-05 17:09:43,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019430081] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:43,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:43,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 17:09:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16982592] [2025-02-05 17:09:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:43,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 17:09:43,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:43,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 17:09:43,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:43,324 INFO L87 Difference]: Start difference. First operand 2631 states and 4704 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:43,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:43,781 INFO L93 Difference]: Finished difference Result 3655 states and 6215 transitions. [2025-02-05 17:09:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 17:09:43,782 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-02-05 17:09:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:43,800 INFO L225 Difference]: With dead ends: 3655 [2025-02-05 17:09:43,801 INFO L226 Difference]: Without dead ends: 3157 [2025-02-05 17:09:43,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-05 17:09:43,807 INFO L435 NwaCegarLoop]: 4184 mSDtfsCounter, 4258 mSDsluCounter, 12549 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4271 SdHoareTripleChecker+Valid, 16733 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:43,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4271 Valid, 16733 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 17:09:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2025-02-05 17:09:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3111. [2025-02-05 17:09:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2952 states have (on average 1.7489837398373984) internal successors, (5163), 2975 states have internal predecessors, (5163), 89 states have call successors, (89), 49 states have call predecessors, (89), 68 states have return successors, (166), 94 states have call predecessors, (166), 87 states have call successors, (166) [2025-02-05 17:09:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 5418 transitions. [2025-02-05 17:09:43,945 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 5418 transitions. Word has length 69 [2025-02-05 17:09:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:43,945 INFO L471 AbstractCegarLoop]: Abstraction has 3111 states and 5418 transitions. [2025-02-05 17:09:43,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 5418 transitions. [2025-02-05 17:09:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-05 17:09:43,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:43,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:43,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 17:09:43,950 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:43,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash 98098862, now seen corresponding path program 1 times [2025-02-05 17:09:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65551815] [2025-02-05 17:09:43,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:43,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-05 17:09:43,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-05 17:09:43,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:43,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 17:09:44,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:44,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65551815] [2025-02-05 17:09:44,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65551815] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:44,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:09:44,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 17:09:44,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300909792] [2025-02-05 17:09:44,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:44,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 17:09:44,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:44,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 17:09:44,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 17:09:44,034 INFO L87 Difference]: Start difference. First operand 3111 states and 5418 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:44,271 INFO L93 Difference]: Finished difference Result 4981 states and 8201 transitions. [2025-02-05 17:09:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 17:09:44,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2025-02-05 17:09:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:44,293 INFO L225 Difference]: With dead ends: 4981 [2025-02-05 17:09:44,294 INFO L226 Difference]: Without dead ends: 4003 [2025-02-05 17:09:44,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 17:09:44,301 INFO L435 NwaCegarLoop]: 4310 mSDtfsCounter, 4284 mSDsluCounter, 4249 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4284 SdHoareTripleChecker+Valid, 8559 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:44,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4284 Valid, 8559 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 17:09:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2025-02-05 17:09:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 3995. [2025-02-05 17:09:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3995 states, 3687 states have (on average 1.6718199077841063) internal successors, (6164), 3738 states have internal predecessors, (6164), 170 states have call successors, (170), 97 states have call predecessors, (170), 136 states have return successors, (311), 167 states have call predecessors, (311), 168 states have call successors, (311) [2025-02-05 17:09:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 6645 transitions. [2025-02-05 17:09:44,486 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 6645 transitions. Word has length 69 [2025-02-05 17:09:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:44,487 INFO L471 AbstractCegarLoop]: Abstraction has 3995 states and 6645 transitions. [2025-02-05 17:09:44,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 17:09:44,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 6645 transitions. [2025-02-05 17:09:44,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 17:09:44,499 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:44,500 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:44,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 17:09:44,500 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:44,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:44,501 INFO L85 PathProgramCache]: Analyzing trace with hash 181071161, now seen corresponding path program 1 times [2025-02-05 17:09:44,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:44,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370487282] [2025-02-05 17:09:44,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:44,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:44,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 17:09:44,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 17:09:44,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:44,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:09:44,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:44,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370487282] [2025-02-05 17:09:44,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370487282] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:44,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747890858] [2025-02-05 17:09:44,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:44,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:44,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:44,587 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) [2025-02-05 17:09:44,590 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 [2025-02-05 17:09:44,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 17:09:44,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 17:09:44,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:44,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:44,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:44,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 17:09:44,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:44,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747890858] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:44,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:44,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:09:44,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952319738] [2025-02-05 17:09:44,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:44,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:44,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:44,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:44,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:44,767 INFO L87 Difference]: Start difference. First operand 3995 states and 6645 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:09:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:44,946 INFO L93 Difference]: Finished difference Result 7661 states and 11941 transitions. [2025-02-05 17:09:44,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:44,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2025-02-05 17:09:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:44,986 INFO L225 Difference]: With dead ends: 7661 [2025-02-05 17:09:44,986 INFO L226 Difference]: Without dead ends: 5799 [2025-02-05 17:09:44,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:44,997 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4113 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4113 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:44,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4113 Valid, 4328 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2025-02-05 17:09:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 5747. [2025-02-05 17:09:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 5149 states have (on average 1.5952612157700525) internal successors, (8214), 5248 states have internal predecessors, (8214), 324 states have call successors, (324), 193 states have call predecessors, (324), 272 states have return successors, (593), 313 states have call predecessors, (593), 322 states have call successors, (593) [2025-02-05 17:09:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 9131 transitions. [2025-02-05 17:09:45,364 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 9131 transitions. Word has length 113 [2025-02-05 17:09:45,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:45,366 INFO L471 AbstractCegarLoop]: Abstraction has 5747 states and 9131 transitions. [2025-02-05 17:09:45,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:09:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 9131 transitions. [2025-02-05 17:09:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 17:09:45,378 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:45,378 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:45,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 17:09:45,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:45,584 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:45,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash -801364877, now seen corresponding path program 1 times [2025-02-05 17:09:45,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:45,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192280076] [2025-02-05 17:09:45,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:45,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 17:09:45,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 17:09:45,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:45,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:09:45,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:45,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192280076] [2025-02-05 17:09:45,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192280076] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:45,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078068809] [2025-02-05 17:09:45,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:45,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:45,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:45,678 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) [2025-02-05 17:09:45,680 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 [2025-02-05 17:09:45,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 17:09:45,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 17:09:45,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:45,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:45,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:45,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 17:09:45,849 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:45,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078068809] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:45,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2025-02-05 17:09:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669801147] [2025-02-05 17:09:45,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:45,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:45,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:45,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:45,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:45,852 INFO L87 Difference]: Start difference. First operand 5747 states and 9131 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:09:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:46,304 INFO L93 Difference]: Finished difference Result 12861 states and 19369 transitions. [2025-02-05 17:09:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:46,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2025-02-05 17:09:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:46,367 INFO L225 Difference]: With dead ends: 12861 [2025-02-05 17:09:46,367 INFO L226 Difference]: Without dead ends: 9247 [2025-02-05 17:09:46,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:46,384 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4119 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4119 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:46,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4119 Valid, 4328 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9247 states. [2025-02-05 17:09:46,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9247 to 9147. [2025-02-05 17:09:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9147 states, 7977 states have (on average 1.5256362040867495) internal successors, (12170), 8172 states have internal predecessors, (12170), 624 states have call successors, (624), 385 states have call predecessors, (624), 544 states have return successors, (1149), 597 states have call predecessors, (1149), 622 states have call successors, (1149) [2025-02-05 17:09:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9147 states to 9147 states and 13943 transitions. [2025-02-05 17:09:47,044 INFO L78 Accepts]: Start accepts. Automaton has 9147 states and 13943 transitions. Word has length 113 [2025-02-05 17:09:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:47,044 INFO L471 AbstractCegarLoop]: Abstraction has 9147 states and 13943 transitions. [2025-02-05 17:09:47,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 17:09:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 9147 states and 13943 transitions. [2025-02-05 17:09:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 17:09:47,057 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:47,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:47,067 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 [2025-02-05 17:09:47,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:47,262 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:47,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:47,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1876002861, now seen corresponding path program 1 times [2025-02-05 17:09:47,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:47,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774135300] [2025-02-05 17:09:47,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:47,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:47,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 17:09:47,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 17:09:47,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:47,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 17:09:47,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774135300] [2025-02-05 17:09:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774135300] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063335829] [2025-02-05 17:09:47,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:47,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:47,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:47,350 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) [2025-02-05 17:09:47,353 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 [2025-02-05 17:09:47,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 17:09:47,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 17:09:47,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:47,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:47,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:47,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 17:09:47,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:47,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063335829] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:47,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:47,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:47,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355976245] [2025-02-05 17:09:47,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:47,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:47,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:47,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:47,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:47,491 INFO L87 Difference]: Start difference. First operand 9147 states and 13943 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 17:09:48,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:48,083 INFO L93 Difference]: Finished difference Result 22395 states and 33090 transitions. [2025-02-05 17:09:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:48,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 113 [2025-02-05 17:09:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:48,161 INFO L225 Difference]: With dead ends: 22395 [2025-02-05 17:09:48,161 INFO L226 Difference]: Without dead ends: 15383 [2025-02-05 17:09:48,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:48,192 INFO L435 NwaCegarLoop]: 4314 mSDtfsCounter, 156 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8466 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:48,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8466 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15383 states. [2025-02-05 17:09:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15383 to 15383. [2025-02-05 17:09:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15383 states, 13184 states have (on average 1.4674605582524272) internal successors, (19347), 13540 states have internal predecessors, (19347), 1145 states have call successors, (1145), 733 states have call predecessors, (1145), 1052 states have return successors, (2331), 1125 states have call predecessors, (2331), 1143 states have call successors, (2331) [2025-02-05 17:09:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15383 states to 15383 states and 22823 transitions. [2025-02-05 17:09:49,469 INFO L78 Accepts]: Start accepts. Automaton has 15383 states and 22823 transitions. Word has length 113 [2025-02-05 17:09:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:49,470 INFO L471 AbstractCegarLoop]: Abstraction has 15383 states and 22823 transitions. [2025-02-05 17:09:49,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-05 17:09:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15383 states and 22823 transitions. [2025-02-05 17:09:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 17:09:49,514 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:49,514 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:49,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 17:09:49,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:49,715 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:49,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash 218358296, now seen corresponding path program 1 times [2025-02-05 17:09:49,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:49,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477143818] [2025-02-05 17:09:49,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:49,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:49,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:09:49,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:09:49,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:49,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:09:49,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477143818] [2025-02-05 17:09:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477143818] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:49,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191851068] [2025-02-05 17:09:49,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:49,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:49,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:49,823 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) [2025-02-05 17:09:49,825 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 [2025-02-05 17:09:49,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:09:49,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:09:49,944 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:49,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:49,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:49,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:50,075 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 17:09:50,077 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191851068] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:50,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:50,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:50,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774904881] [2025-02-05 17:09:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:50,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:50,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:50,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:50,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:50,079 INFO L87 Difference]: Start difference. First operand 15383 states and 22823 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:09:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:50,618 INFO L93 Difference]: Finished difference Result 23771 states and 35164 transitions. [2025-02-05 17:09:50,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:50,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 165 [2025-02-05 17:09:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:50,694 INFO L225 Difference]: With dead ends: 23771 [2025-02-05 17:09:50,695 INFO L226 Difference]: Without dead ends: 13507 [2025-02-05 17:09:50,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:50,741 INFO L435 NwaCegarLoop]: 4151 mSDtfsCounter, 4086 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:50,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4185 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13507 states. [2025-02-05 17:09:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13507 to 13435. [2025-02-05 17:09:51,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13435 states, 11664 states have (on average 1.4436728395061729) internal successors, (16839), 11846 states have internal predecessors, (16839), 967 states have call successors, (967), 651 states have call predecessors, (967), 802 states have return successors, (1595), 947 states have call predecessors, (1595), 965 states have call successors, (1595) [2025-02-05 17:09:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13435 states to 13435 states and 19401 transitions. [2025-02-05 17:09:51,889 INFO L78 Accepts]: Start accepts. Automaton has 13435 states and 19401 transitions. Word has length 165 [2025-02-05 17:09:51,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:51,889 INFO L471 AbstractCegarLoop]: Abstraction has 13435 states and 19401 transitions. [2025-02-05 17:09:51,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:09:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 13435 states and 19401 transitions. [2025-02-05 17:09:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 17:09:51,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:51,919 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:51,928 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 [2025-02-05 17:09:52,122 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,SelfDestructingSolverStorable9 [2025-02-05 17:09:52,122 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:52,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:52,123 INFO L85 PathProgramCache]: Analyzing trace with hash 820284657, now seen corresponding path program 1 times [2025-02-05 17:09:52,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:52,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610185235] [2025-02-05 17:09:52,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:52,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:52,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:09:52,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:09:52,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:52,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:09:52,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610185235] [2025-02-05 17:09:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610185235] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557543711] [2025-02-05 17:09:52,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:52,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:52,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:52,233 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) [2025-02-05 17:09:52,236 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 [2025-02-05 17:09:52,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:09:52,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:09:52,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:52,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:52,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:52,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 17:09:52,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:52,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557543711] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:52,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:52,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:52,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272424085] [2025-02-05 17:09:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:52,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:52,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:52,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:52,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:52,437 INFO L87 Difference]: Start difference. First operand 13435 states and 19401 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:09:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:52,875 INFO L93 Difference]: Finished difference Result 21870 states and 31350 transitions. [2025-02-05 17:09:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 165 [2025-02-05 17:09:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:52,929 INFO L225 Difference]: With dead ends: 21870 [2025-02-05 17:09:52,930 INFO L226 Difference]: Without dead ends: 12026 [2025-02-05 17:09:52,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:52,960 INFO L435 NwaCegarLoop]: 4150 mSDtfsCounter, 4101 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:52,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4183 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12026 states. [2025-02-05 17:09:53,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12026 to 12006. [2025-02-05 17:09:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12006 states, 10549 states have (on average 1.4259171485448858) internal successors, (15042), 10642 states have internal predecessors, (15042), 813 states have call successors, (813), 575 states have call predecessors, (813), 642 states have return successors, (1167), 794 states have call predecessors, (1167), 811 states have call successors, (1167) [2025-02-05 17:09:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12006 states to 12006 states and 17022 transitions. [2025-02-05 17:09:53,664 INFO L78 Accepts]: Start accepts. Automaton has 12006 states and 17022 transitions. Word has length 165 [2025-02-05 17:09:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:53,664 INFO L471 AbstractCegarLoop]: Abstraction has 12006 states and 17022 transitions. [2025-02-05 17:09:53,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 17:09:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12006 states and 17022 transitions. [2025-02-05 17:09:53,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-02-05 17:09:53,697 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:53,697 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:53,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 17:09:53,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-05 17:09:53,898 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:53,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash -156090862, now seen corresponding path program 1 times [2025-02-05 17:09:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:53,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80062918] [2025-02-05 17:09:53,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:53,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:09:53,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:09:53,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:53,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:54,022 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:09:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80062918] [2025-02-05 17:09:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80062918] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839480682] [2025-02-05 17:09:54,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:54,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:54,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:54,025 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) [2025-02-05 17:09:54,028 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 [2025-02-05 17:09:54,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-02-05 17:09:54,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-02-05 17:09:54,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:54,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:54,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:09:54,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 17:09:54,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839480682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531097303] [2025-02-05 17:09:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:54,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:54,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:54,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:54,213 INFO L87 Difference]: Start difference. First operand 12006 states and 17022 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 17:09:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:54,894 INFO L93 Difference]: Finished difference Result 20508 states and 28185 transitions. [2025-02-05 17:09:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 165 [2025-02-05 17:09:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:54,949 INFO L225 Difference]: With dead ends: 20508 [2025-02-05 17:09:54,950 INFO L226 Difference]: Without dead ends: 12940 [2025-02-05 17:09:54,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:54,965 INFO L435 NwaCegarLoop]: 4197 mSDtfsCounter, 4084 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 4375 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:54,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4084 Valid, 4375 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:54,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12940 states. [2025-02-05 17:09:55,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12940 to 12835. [2025-02-05 17:09:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 11336 states have (on average 1.3995236414961185) internal successors, (15865), 11429 states have internal predecessors, (15865), 813 states have call successors, (813), 617 states have call predecessors, (813), 684 states have return successors, (1209), 794 states have call predecessors, (1209), 811 states have call successors, (1209) [2025-02-05 17:09:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 17887 transitions. [2025-02-05 17:09:55,479 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 17887 transitions. Word has length 165 [2025-02-05 17:09:55,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:55,480 INFO L471 AbstractCegarLoop]: Abstraction has 12835 states and 17887 transitions. [2025-02-05 17:09:55,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 17:09:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 17887 transitions. [2025-02-05 17:09:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-02-05 17:09:55,502 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:55,502 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:55,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 17:09:55,703 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,SelfDestructingSolverStorable11 [2025-02-05 17:09:55,704 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:55,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash -924627161, now seen corresponding path program 1 times [2025-02-05 17:09:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:55,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4055639] [2025-02-05 17:09:55,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:55,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:09:55,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:09:55,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:55,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-05 17:09:55,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:55,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4055639] [2025-02-05 17:09:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4055639] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:55,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072887830] [2025-02-05 17:09:55,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:55,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:55,810 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) [2025-02-05 17:09:55,812 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 [2025-02-05 17:09:55,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-02-05 17:09:55,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-02-05 17:09:55,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:55,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:55,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:55,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 17:09:55,959 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072887830] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:55,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083081874] [2025-02-05 17:09:55,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:55,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:55,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:55,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:55,961 INFO L87 Difference]: Start difference. First operand 12835 states and 17887 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:09:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:56,734 INFO L93 Difference]: Finished difference Result 32953 states and 44489 transitions. [2025-02-05 17:09:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:56,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 166 [2025-02-05 17:09:56,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:56,837 INFO L225 Difference]: With dead ends: 32953 [2025-02-05 17:09:56,837 INFO L226 Difference]: Without dead ends: 22261 [2025-02-05 17:09:56,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:56,869 INFO L435 NwaCegarLoop]: 4317 mSDtfsCounter, 151 mSDsluCounter, 4146 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:56,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 8463 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22261 states. [2025-02-05 17:09:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22261 to 22257. [2025-02-05 17:09:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22257 states, 19376 states have (on average 1.3463563170933113) internal successors, (26087), 19560 states have internal predecessors, (26087), 1567 states have call successors, (1567), 1177 states have call predecessors, (1567), 1312 states have return successors, (2699), 1531 states have call predecessors, (2699), 1565 states have call successors, (2699) [2025-02-05 17:09:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 30353 transitions. [2025-02-05 17:09:57,851 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 30353 transitions. Word has length 166 [2025-02-05 17:09:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:09:57,851 INFO L471 AbstractCegarLoop]: Abstraction has 22257 states and 30353 transitions. [2025-02-05 17:09:57,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:09:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 30353 transitions. [2025-02-05 17:09:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 17:09:57,876 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:09:57,876 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:09:57,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 17:09:58,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:58,081 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:09:58,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:09:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash 663194010, now seen corresponding path program 1 times [2025-02-05 17:09:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:09:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835291512] [2025-02-05 17:09:58,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:09:58,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:09:58,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:09:58,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:58,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-02-05 17:09:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:09:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835291512] [2025-02-05 17:09:58,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835291512] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:09:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109112261] [2025-02-05 17:09:58,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:09:58,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:09:58,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:09:58,256 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) [2025-02-05 17:09:58,259 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 [2025-02-05 17:09:58,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:09:58,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:09:58,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:09:58,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:09:58,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:09:58,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:09:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 17:09:58,441 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:09:58,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109112261] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:09:58,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:09:58,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:09:58,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951420800] [2025-02-05 17:09:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:09:58,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:09:58,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:09:58,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:09:58,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:58,443 INFO L87 Difference]: Start difference. First operand 22257 states and 30353 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:09:59,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:09:59,595 INFO L93 Difference]: Finished difference Result 43639 states and 59252 transitions. [2025-02-05 17:09:59,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:09:59,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 167 [2025-02-05 17:09:59,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:09:59,724 INFO L225 Difference]: With dead ends: 43639 [2025-02-05 17:09:59,724 INFO L226 Difference]: Without dead ends: 23537 [2025-02-05 17:09:59,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:09:59,788 INFO L435 NwaCegarLoop]: 4153 mSDtfsCounter, 4108 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 4185 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:09:59,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 4185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:09:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23537 states. [2025-02-05 17:10:00,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23537 to 22257. [2025-02-05 17:10:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22257 states, 19376 states have (on average 1.3215834021469859) internal successors, (25607), 19560 states have internal predecessors, (25607), 1567 states have call successors, (1567), 1177 states have call predecessors, (1567), 1312 states have return successors, (2573), 1531 states have call predecessors, (2573), 1565 states have call successors, (2573) [2025-02-05 17:10:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22257 states to 22257 states and 29747 transitions. [2025-02-05 17:10:01,081 INFO L78 Accepts]: Start accepts. Automaton has 22257 states and 29747 transitions. Word has length 167 [2025-02-05 17:10:01,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:01,081 INFO L471 AbstractCegarLoop]: Abstraction has 22257 states and 29747 transitions. [2025-02-05 17:10:01,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:10:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 22257 states and 29747 transitions. [2025-02-05 17:10:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 17:10:01,104 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:01,104 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:10:01,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 17:10:01,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:01,305 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:01,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:01,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1306474692, now seen corresponding path program 1 times [2025-02-05 17:10:01,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:01,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865567609] [2025-02-05 17:10:01,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:01,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:01,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:10:01,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:10:01,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:01,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-02-05 17:10:01,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:01,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865567609] [2025-02-05 17:10:01,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865567609] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:10:01,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272509596] [2025-02-05 17:10:01,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:01,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:01,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:10:01,386 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) [2025-02-05 17:10:01,389 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 [2025-02-05 17:10:01,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:10:01,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:10:01,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:01,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:01,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 17:10:01,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:10:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 17:10:01,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:10:01,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272509596] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:01,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:10:01,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:10:01,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622060769] [2025-02-05 17:10:01,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:01,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:01,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:01,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:01,519 INFO L87 Difference]: Start difference. First operand 22257 states and 29747 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:10:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:10:02,927 INFO L93 Difference]: Finished difference Result 59931 states and 78859 transitions. [2025-02-05 17:10:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:10:02,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 167 [2025-02-05 17:10:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:10:03,114 INFO L225 Difference]: With dead ends: 59931 [2025-02-05 17:10:03,115 INFO L226 Difference]: Without dead ends: 39829 [2025-02-05 17:10:03,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:03,168 INFO L435 NwaCegarLoop]: 4314 mSDtfsCounter, 158 mSDsluCounter, 4143 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 8457 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:10:03,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 8457 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:10:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39829 states. [2025-02-05 17:10:05,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39829 to 39825. [2025-02-05 17:10:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39825 states, 34292 states have (on average 1.2811442902134609) internal successors, (43933), 34658 states have internal predecessors, (43933), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-02-05 17:10:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39825 states to 39825 states and 52649 transitions. [2025-02-05 17:10:05,671 INFO L78 Accepts]: Start accepts. Automaton has 39825 states and 52649 transitions. Word has length 167 [2025-02-05 17:10:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:05,672 INFO L471 AbstractCegarLoop]: Abstraction has 39825 states and 52649 transitions. [2025-02-05 17:10:05,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 17:10:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 39825 states and 52649 transitions. [2025-02-05 17:10:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 17:10:05,712 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:05,712 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:10:05,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 17:10:05,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:05,914 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:05,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1498376465, now seen corresponding path program 1 times [2025-02-05 17:10:05,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:05,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941787449] [2025-02-05 17:10:05,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:05,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:05,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:10:05,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:10:05,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:05,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-05 17:10:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941787449] [2025-02-05 17:10:05,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941787449] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:10:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789288888] [2025-02-05 17:10:05,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:05,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:05,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:10:05,997 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) [2025-02-05 17:10:05,999 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 [2025-02-05 17:10:06,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:10:06,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:10:06,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:06,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:06,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:10:06,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:10:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 17:10:06,163 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:10:06,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789288888] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:06,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:10:06,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:10:06,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559324112] [2025-02-05 17:10:06,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:06,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:06,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:06,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:06,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:06,166 INFO L87 Difference]: Start difference. First operand 39825 states and 52649 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 17:10:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:10:07,825 INFO L93 Difference]: Finished difference Result 71459 states and 93655 transitions. [2025-02-05 17:10:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:10:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 167 [2025-02-05 17:10:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:10:07,974 INFO L225 Difference]: With dead ends: 71459 [2025-02-05 17:10:07,974 INFO L226 Difference]: Without dead ends: 40505 [2025-02-05 17:10:08,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:08,033 INFO L435 NwaCegarLoop]: 4175 mSDtfsCounter, 4103 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4103 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:10:08,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4103 Valid, 4349 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:10:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40505 states. [2025-02-05 17:10:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40505 to 39741. [2025-02-05 17:10:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39741 states, 34208 states have (on average 1.2732401777362021) internal successors, (43555), 34574 states have internal predecessors, (43555), 3019 states have call successors, (3019), 2241 states have call predecessors, (3019), 2512 states have return successors, (5697), 2949 states have call predecessors, (5697), 3017 states have call successors, (5697) [2025-02-05 17:10:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39741 states to 39741 states and 52271 transitions. [2025-02-05 17:10:10,137 INFO L78 Accepts]: Start accepts. Automaton has 39741 states and 52271 transitions. Word has length 167 [2025-02-05 17:10:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:10,138 INFO L471 AbstractCegarLoop]: Abstraction has 39741 states and 52271 transitions. [2025-02-05 17:10:10,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 17:10:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 39741 states and 52271 transitions. [2025-02-05 17:10:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-02-05 17:10:10,174 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:10,175 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:10:10,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 17:10:10,375 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,SelfDestructingSolverStorable15 [2025-02-05 17:10:10,375 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:10,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 896435536, now seen corresponding path program 1 times [2025-02-05 17:10:10,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:10,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233291250] [2025-02-05 17:10:10,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:10,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:10,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-02-05 17:10:10,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-02-05 17:10:10,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:10,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-02-05 17:10:10,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233291250] [2025-02-05 17:10:10,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233291250] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:10,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 17:10:10,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 17:10:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299743060] [2025-02-05 17:10:10,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:10,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:10,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:10,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:10,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 17:10:10,417 INFO L87 Difference]: Start difference. First operand 39741 states and 52271 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 17:10:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:10:12,135 INFO L93 Difference]: Finished difference Result 70619 states and 91778 transitions. [2025-02-05 17:10:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:10:12,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 167 [2025-02-05 17:10:12,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:10:12,290 INFO L225 Difference]: With dead ends: 70619 [2025-02-05 17:10:12,290 INFO L226 Difference]: Without dead ends: 33025 [2025-02-05 17:10:12,377 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 [2025-02-05 17:10:12,378 INFO L435 NwaCegarLoop]: 4148 mSDtfsCounter, 185 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 8106 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:10:12,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 8106 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:10:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33025 states. [2025-02-05 17:10:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33025 to 33025. [2025-02-05 17:10:14,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33025 states, 28528 states have (on average 1.2838264161525519) internal successors, (36625), 28818 states have internal predecessors, (36625), 2447 states have call successors, (2447), 1833 states have call predecessors, (2447), 2048 states have return successors, (4449), 2385 states have call predecessors, (4449), 2445 states have call successors, (4449) [2025-02-05 17:10:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33025 states to 33025 states and 43521 transitions. [2025-02-05 17:10:14,554 INFO L78 Accepts]: Start accepts. Automaton has 33025 states and 43521 transitions. Word has length 167 [2025-02-05 17:10:14,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 17:10:14,554 INFO L471 AbstractCegarLoop]: Abstraction has 33025 states and 43521 transitions. [2025-02-05 17:10:14,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-05 17:10:14,555 INFO L276 IsEmpty]: Start isEmpty. Operand 33025 states and 43521 transitions. [2025-02-05 17:10:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-05 17:10:14,586 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 17:10:14,587 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 17:10:14,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-05 17:10:14,587 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 17:10:14,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 17:10:14,588 INFO L85 PathProgramCache]: Analyzing trace with hash -229199568, now seen corresponding path program 1 times [2025-02-05 17:10:14,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 17:10:14,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263730408] [2025-02-05 17:10:14,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:14,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 17:10:14,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 17:10:14,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 17:10:14,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:14,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-02-05 17:10:14,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 17:10:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263730408] [2025-02-05 17:10:14,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263730408] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 17:10:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515298848] [2025-02-05 17:10:14,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 17:10:14,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 17:10:14,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 17:10:14,688 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) [2025-02-05 17:10:14,690 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 [2025-02-05 17:10:14,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-05 17:10:14,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-05 17:10:14,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 17:10:14,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 17:10:14,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 17:10:14,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 17:10:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 17:10:14,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 17:10:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515298848] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 17:10:14,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 17:10:14,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 17:10:14,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114910448] [2025-02-05 17:10:14,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 17:10:14,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 17:10:14,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 17:10:14,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 17:10:14,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:14,853 INFO L87 Difference]: Start difference. First operand 33025 states and 43521 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 17:10:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 17:10:16,060 INFO L93 Difference]: Finished difference Result 58693 states and 76393 transitions. [2025-02-05 17:10:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 17:10:16,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 168 [2025-02-05 17:10:16,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 17:10:16,241 INFO L225 Difference]: With dead ends: 58693 [2025-02-05 17:10:16,241 INFO L226 Difference]: Without dead ends: 33337 [2025-02-05 17:10:16,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 17:10:16,309 INFO L435 NwaCegarLoop]: 4176 mSDtfsCounter, 4102 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 17:10:16,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4348 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 17:10:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33337 states.