./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/weaver/chl-name-comparator-symm.wvr.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 e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:12:57,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:12:57,109 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:12:57,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:12:57,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:12:57,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:12:57,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:12:57,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:12:57,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:12:57,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:12:57,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:12:57,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:12:57,135 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:57,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:12:57,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:12:57,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:12:57,138 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 -> e3298e0ac573b72ea1dd21021e341a1c4e9f42cf513c1ea24a79ab2c37c412bc [2025-02-08 01:12:57,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:12:57,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:12:57,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:12:57,355 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:12:57,355 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:12:57,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2025-02-08 01:12:58,479 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/691af3613/dfce730194074734834edd8f67aa131a/FLAG63ea4273b [2025-02-08 01:12:58,723 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:12:58,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2025-02-08 01:12:58,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/691af3613/dfce730194074734834edd8f67aa131a/FLAG63ea4273b [2025-02-08 01:12:59,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/691af3613/dfce730194074734834edd8f67aa131a [2025-02-08 01:12:59,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:12:59,051 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:12:59,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:59,051 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:12:59,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:12:59,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e0c5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59, skipping insertion in model container [2025-02-08 01:12:59,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,069 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:12:59,200 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/weaver/chl-name-comparator-symm.wvr.c[3882,3895] [2025-02-08 01:12:59,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:59,223 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:12:59,241 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/weaver/chl-name-comparator-symm.wvr.c[3882,3895] [2025-02-08 01:12:59,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:12:59,258 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:12:59,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59 WrapperNode [2025-02-08 01:12:59,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:12:59,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:59,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:12:59,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:12:59,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,297 INFO L138 Inliner]: procedures = 24, calls = 24, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 214 [2025-02-08 01:12:59,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:12:59,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:12:59,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:12:59,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:12:59,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,326 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 01:12:59,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,326 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,334 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,339 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:12:59,347 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:12:59,347 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:12:59,347 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:12:59,348 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (1/1) ... [2025-02-08 01:12:59,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:12:59,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:12:59,373 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) [2025-02-08 01:12:59,375 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 [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:12:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:12:59,389 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:12:59,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:12:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:12:59,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:12:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:12:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:12:59,390 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:12:59,465 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:12:59,467 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:12:59,596 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-3: #t~ite5#1 := #t~ret4#1; [2025-02-08 01:12:59,597 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret4#1 && #t~ret4#1 <= 2147483647; [2025-02-08 01:12:59,597 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:59,597 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:59,597 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L63-7: #t~ret4#1 := minus_#res#1; [2025-02-08 01:12:59,664 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-3: #t~ite10#1 := #t~ret9#1; [2025-02-08 01:12:59,664 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-4: assume { :end_inline_minus } true;assume -2147483648 <= #t~ret9#1 && #t~ret9#1 <= 2147483647; [2025-02-08 01:12:59,665 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-5: havoc minus_#in~a#1, minus_#in~b#1; [2025-02-08 01:12:59,665 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-6: havoc minus_~a#1, minus_~b#1; [2025-02-08 01:12:59,665 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L85-7: #t~ret9#1 := minus_#res#1; [2025-02-08 01:12:59,765 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:12:59,765 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:13:00,017 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:13:00,018 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:13:00,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:13:00 BoogieIcfgContainer [2025-02-08 01:13:00,018 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:13:00,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:13:00,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:13:00,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:13:00,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:12:59" (1/3) ... [2025-02-08 01:13:00,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4976f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:13:00, skipping insertion in model container [2025-02-08 01:13:00,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:12:59" (2/3) ... [2025-02-08 01:13:00,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4976f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:13:00, skipping insertion in model container [2025-02-08 01:13:00,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:13:00" (3/3) ... [2025-02-08 01:13:00,025 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2025-02-08 01:13:00,034 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:13:00,035 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-symm.wvr.c that has 3 procedures, 26 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-08 01:13:00,035 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:13:00,073 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 01:13:00,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 30 transitions, 74 flow [2025-02-08 01:13:00,114 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2025-02-08 01:13:00,117 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:13:00,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 5/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2025-02-08 01:13:00,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 30 transitions, 74 flow [2025-02-08 01:13:00,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 27 transitions, 66 flow [2025-02-08 01:13:00,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:13:00,140 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;@3e1f215a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:13:00,140 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-08 01:13:00,149 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:13:00,150 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2025-02-08 01:13:00,150 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 01:13:00,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:00,150 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:00,151 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:00,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1405794096, now seen corresponding path program 1 times [2025-02-08 01:13:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:00,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094313877] [2025-02-08 01:13:00,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:00,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 01:13:00,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 01:13:00,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:00,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:00,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:00,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094313877] [2025-02-08 01:13:00,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094313877] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:00,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:00,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:13:00,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416149561] [2025-02-08 01:13:00,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:00,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:13:00,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:00,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:13:00,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:13:00,315 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:00,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:00,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:00,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:00,412 INFO L124 PetriNetUnfolderBase]: 170/294 cut-off events. [2025-02-08 01:13:00,412 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2025-02-08 01:13:00,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 294 events. 170/294 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 874 event pairs, 138 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 560. Up to 294 conditions per place. [2025-02-08 01:13:00,418 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 22 selfloop transitions, 0 changer transitions 2/25 dead transitions. [2025-02-08 01:13:00,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 110 flow [2025-02-08 01:13:00,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:13:00,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-08 01:13:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2025-02-08 01:13:00,426 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-08 01:13:00,427 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 66 flow. Second operand 2 states and 32 transitions. [2025-02-08 01:13:00,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 110 flow [2025-02-08 01:13:00,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 01:13:00,435 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 50 flow [2025-02-08 01:13:00,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2025-02-08 01:13:00,438 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2025-02-08 01:13:00,439 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 50 flow [2025-02-08 01:13:00,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:00,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:00,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:13:00,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:00,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash 942312500, now seen corresponding path program 1 times [2025-02-08 01:13:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:00,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346872314] [2025-02-08 01:13:00,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:00,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:13:00,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:13:00,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:00,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:00,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:00,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346872314] [2025-02-08 01:13:00,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346872314] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:00,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:00,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:13:00,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889007391] [2025-02-08 01:13:00,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:00,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:13:00,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:00,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:13:00,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:13:00,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:00,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:00,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:00,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:00,671 INFO L124 PetriNetUnfolderBase]: 128/224 cut-off events. [2025-02-08 01:13:00,671 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:13:00,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 224 events. 128/224 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 590 event pairs, 100 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 454. Up to 223 conditions per place. [2025-02-08 01:13:00,673 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 21 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2025-02-08 01:13:00,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 98 flow [2025-02-08 01:13:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:13:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:13:00,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2025-02-08 01:13:00,674 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2025-02-08 01:13:00,674 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 50 flow. Second operand 3 states and 33 transitions. [2025-02-08 01:13:00,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 98 flow [2025-02-08 01:13:00,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:13:00,679 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 62 flow [2025-02-08 01:13:00,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2025-02-08 01:13:00,680 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2025-02-08 01:13:00,680 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 62 flow [2025-02-08 01:13:00,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:00,681 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:00,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:13:00,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:00,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:00,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1093112351, now seen corresponding path program 1 times [2025-02-08 01:13:00,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:00,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220791100] [2025-02-08 01:13:00,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:00,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:00,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:13:00,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:13:00,708 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:00,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:00,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:00,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220791100] [2025-02-08 01:13:00,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220791100] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:00,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101964324] [2025-02-08 01:13:00,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:00,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:00,804 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) [2025-02-08 01:13:00,806 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 [2025-02-08 01:13:00,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:13:00,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:13:00,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:00,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:00,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:13:00,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:00,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:00,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101964324] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:00,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:00,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-08 01:13:00,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129650700] [2025-02-08 01:13:00,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:00,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:13:00,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:00,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:13:00,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:13:00,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:00,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:00,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:00,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:00,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:01,005 INFO L124 PetriNetUnfolderBase]: 128/226 cut-off events. [2025-02-08 01:13:01,005 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:13:01,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 226 events. 128/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 590 event pairs, 100 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 465. Up to 223 conditions per place. [2025-02-08 01:13:01,006 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 21 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2025-02-08 01:13:01,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 120 flow [2025-02-08 01:13:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2025-02-08 01:13:01,007 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28 [2025-02-08 01:13:01,008 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 62 flow. Second operand 5 states and 42 transitions. [2025-02-08 01:13:01,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 120 flow [2025-02-08 01:13:01,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 116 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:01,009 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 84 flow [2025-02-08 01:13:01,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2025-02-08 01:13:01,009 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2025-02-08 01:13:01,009 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 84 flow [2025-02-08 01:13:01,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:01,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:01,010 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:01,017 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 [2025-02-08 01:13:01,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:01,211 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:01,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:01,214 INFO L85 PathProgramCache]: Analyzing trace with hash 362709183, now seen corresponding path program 2 times [2025-02-08 01:13:01,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:01,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345320047] [2025-02-08 01:13:01,215 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:01,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:01,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-08 01:13:01,249 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-02-08 01:13:01,249 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:01,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:01,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345320047] [2025-02-08 01:13:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345320047] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:01,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499278933] [2025-02-08 01:13:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:01,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:01,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:01,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:01,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:01,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:01,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:01,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:01,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:01,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:01,668 INFO L124 PetriNetUnfolderBase]: 324/575 cut-off events. [2025-02-08 01:13:01,668 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 01:13:01,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 575 events. 324/575 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2313 event pairs, 100 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 1173. Up to 236 conditions per place. [2025-02-08 01:13:01,670 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 53 selfloop transitions, 7 changer transitions 4/65 dead transitions. [2025-02-08 01:13:01,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 65 transitions, 297 flow [2025-02-08 01:13:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:01,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2025-02-08 01:13:01,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2025-02-08 01:13:01,673 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 84 flow. Second operand 5 states and 77 transitions. [2025-02-08 01:13:01,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 65 transitions, 297 flow [2025-02-08 01:13:01,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 65 transitions, 287 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:01,675 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 123 flow [2025-02-08 01:13:01,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2025-02-08 01:13:01,675 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2025-02-08 01:13:01,675 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 123 flow [2025-02-08 01:13:01,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:01,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:01,675 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:01,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:13:01,676 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:01,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:01,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1419053185, now seen corresponding path program 3 times [2025-02-08 01:13:01,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943952574] [2025-02-08 01:13:01,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:01,691 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-02-08 01:13:01,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 23 statements. [2025-02-08 01:13:01,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:13:01,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:01,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:01,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:01,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943952574] [2025-02-08 01:13:01,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943952574] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:01,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:01,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:01,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231439094] [2025-02-08 01:13:01,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:01,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:01,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:01,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:01,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:01,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:01,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:01,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:01,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:02,020 INFO L124 PetriNetUnfolderBase]: 504/893 cut-off events. [2025-02-08 01:13:02,020 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2025-02-08 01:13:02,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 893 events. 504/893 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3927 event pairs, 226 based on Foata normal form. 1/894 useless extension candidates. Maximal degree in co-relation 2156. Up to 424 conditions per place. [2025-02-08 01:13:02,027 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 52 selfloop transitions, 8 changer transitions 6/67 dead transitions. [2025-02-08 01:13:02,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 368 flow [2025-02-08 01:13:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2025-02-08 01:13:02,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46 [2025-02-08 01:13:02,029 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 123 flow. Second operand 5 states and 69 transitions. [2025-02-08 01:13:02,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 368 flow [2025-02-08 01:13:02,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:13:02,032 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 178 flow [2025-02-08 01:13:02,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2025-02-08 01:13:02,036 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2025-02-08 01:13:02,036 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 178 flow [2025-02-08 01:13:02,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:02,036 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:02,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:13:02,036 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:02,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash -220952435, now seen corresponding path program 4 times [2025-02-08 01:13:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:02,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840454640] [2025-02-08 01:13:02,037 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:02,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:02,044 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-08 01:13:02,049 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 17 of 23 statements. [2025-02-08 01:13:02,049 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:13:02,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:02,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:02,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840454640] [2025-02-08 01:13:02,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840454640] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:02,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:02,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334025193] [2025-02-08 01:13:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:02,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:02,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:02,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:02,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:02,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:02,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:02,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:02,312 INFO L124 PetriNetUnfolderBase]: 504/891 cut-off events. [2025-02-08 01:13:02,312 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2025-02-08 01:13:02,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2449 conditions, 891 events. 504/891 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4031 event pairs, 219 based on Foata normal form. 1/892 useless extension candidates. Maximal degree in co-relation 2434. Up to 400 conditions per place. [2025-02-08 01:13:02,316 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 58 selfloop transitions, 9 changer transitions 4/72 dead transitions. [2025-02-08 01:13:02,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 460 flow [2025-02-08 01:13:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2025-02-08 01:13:02,317 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-02-08 01:13:02,317 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 178 flow. Second operand 5 states and 72 transitions. [2025-02-08 01:13:02,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 460 flow [2025-02-08 01:13:02,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 72 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:02,322 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 232 flow [2025-02-08 01:13:02,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2025-02-08 01:13:02,324 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2025-02-08 01:13:02,324 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 232 flow [2025-02-08 01:13:02,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,324 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:02,324 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:02,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:13:02,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:02,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:02,325 INFO L85 PathProgramCache]: Analyzing trace with hash 630264609, now seen corresponding path program 5 times [2025-02-08 01:13:02,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:02,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813245000] [2025-02-08 01:13:02,325 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:02,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:02,335 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-02-08 01:13:02,350 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:13:02,351 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:02,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:13:02,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:02,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813245000] [2025-02-08 01:13:02,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813245000] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:02,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254980826] [2025-02-08 01:13:02,620 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:02,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:02,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:02,623 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) [2025-02-08 01:13:02,625 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 [2025-02-08 01:13:02,672 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-02-08 01:13:02,691 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 01:13:02,692 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:02,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:02,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 01:13:02,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:02,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:13:02,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254980826] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:02,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:13:02,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2025-02-08 01:13:02,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609324847] [2025-02-08 01:13:02,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:02,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:02,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:02,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:13:02,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:02,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:02,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:02,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:02,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:03,047 INFO L124 PetriNetUnfolderBase]: 504/889 cut-off events. [2025-02-08 01:13:03,048 INFO L125 PetriNetUnfolderBase]: For 1268/1268 co-relation queries the response was YES. [2025-02-08 01:13:03,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 889 events. 504/889 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3916 event pairs, 196 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 2614. Up to 424 conditions per place. [2025-02-08 01:13:03,052 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 52 selfloop transitions, 14 changer transitions 6/73 dead transitions. [2025-02-08 01:13:03,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 508 flow [2025-02-08 01:13:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-02-08 01:13:03,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2025-02-08 01:13:03,053 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 232 flow. Second operand 5 states and 74 transitions. [2025-02-08 01:13:03,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 508 flow [2025-02-08 01:13:03,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:03,057 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 324 flow [2025-02-08 01:13:03,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2025-02-08 01:13:03,057 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2025-02-08 01:13:03,057 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 324 flow [2025-02-08 01:13:03,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:03,058 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:03,063 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 [2025-02-08 01:13:03,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:03,258 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:03,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:03,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2110317424, now seen corresponding path program 1 times [2025-02-08 01:13:03,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:03,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867652451] [2025-02-08 01:13:03,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:03,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:03,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:13:03,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:03,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:03,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:03,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867652451] [2025-02-08 01:13:03,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867652451] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:03,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130867124] [2025-02-08 01:13:03,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:03,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:03,347 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) [2025-02-08 01:13:03,348 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 [2025-02-08 01:13:03,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:13:03,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:03,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:03,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:03,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:13:03,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:03,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:03,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130867124] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:03,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:03,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-08 01:13:03,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145368455] [2025-02-08 01:13:03,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:03,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:03,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:03,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:03,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:13:03,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:03,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:03,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:03,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:03,650 INFO L124 PetriNetUnfolderBase]: 568/997 cut-off events. [2025-02-08 01:13:03,650 INFO L125 PetriNetUnfolderBase]: For 2014/2014 co-relation queries the response was YES. [2025-02-08 01:13:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3118 conditions, 997 events. 568/997 cut-off events. For 2014/2014 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4741 event pairs, 66 based on Foata normal form. 11/1008 useless extension candidates. Maximal degree in co-relation 3097. Up to 487 conditions per place. [2025-02-08 01:13:03,657 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 68 selfloop transitions, 10 changer transitions 2/81 dead transitions. [2025-02-08 01:13:03,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 630 flow [2025-02-08 01:13:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:03,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2025-02-08 01:13:03,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 01:13:03,658 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 324 flow. Second operand 5 states and 75 transitions. [2025-02-08 01:13:03,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 630 flow [2025-02-08 01:13:03,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 626 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-02-08 01:13:03,665 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 375 flow [2025-02-08 01:13:03,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2025-02-08 01:13:03,667 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2025-02-08 01:13:03,667 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 375 flow [2025-02-08 01:13:03,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:03,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:03,668 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:03,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:03,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:03,869 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:03,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1804686896, now seen corresponding path program 1 times [2025-02-08 01:13:03,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:03,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948770476] [2025-02-08 01:13:03,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:03,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:03,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:13:03,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:03,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:03,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948770476] [2025-02-08 01:13:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948770476] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88903685] [2025-02-08 01:13:03,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:03,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:03,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:03,948 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) [2025-02-08 01:13:03,949 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 [2025-02-08 01:13:03,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 01:13:04,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:04,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:04,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:04,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:13:04,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:04,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:04,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88903685] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:04,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:04,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-08 01:13:04,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127185473] [2025-02-08 01:13:04,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:04,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:04,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:04,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:04,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:13:04,076 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:04,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 375 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:04,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:04,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:04,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:04,236 INFO L124 PetriNetUnfolderBase]: 628/1097 cut-off events. [2025-02-08 01:13:04,236 INFO L125 PetriNetUnfolderBase]: For 3035/3035 co-relation queries the response was YES. [2025-02-08 01:13:04,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3546 conditions, 1097 events. 628/1097 cut-off events. For 3035/3035 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5083 event pairs, 140 based on Foata normal form. 10/1107 useless extension candidates. Maximal degree in co-relation 3522. Up to 560 conditions per place. [2025-02-08 01:13:04,243 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 64 selfloop transitions, 12 changer transitions 2/79 dead transitions. [2025-02-08 01:13:04,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 675 flow [2025-02-08 01:13:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-02-08 01:13:04,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2025-02-08 01:13:04,244 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 375 flow. Second operand 5 states and 71 transitions. [2025-02-08 01:13:04,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 675 flow [2025-02-08 01:13:04,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 656 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:04,250 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 424 flow [2025-02-08 01:13:04,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=424, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2025-02-08 01:13:04,251 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2025-02-08 01:13:04,251 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 424 flow [2025-02-08 01:13:04,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:04,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:04,251 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:04,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 01:13:04,455 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,SelfDestructingSolverStorable8 [2025-02-08 01:13:04,455 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:04,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1398206000, now seen corresponding path program 2 times [2025-02-08 01:13:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:04,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61211208] [2025-02-08 01:13:04,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:04,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:04,463 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-08 01:13:04,473 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:04,474 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:04,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:04,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:04,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61211208] [2025-02-08 01:13:04,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61211208] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:04,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:04,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167281381] [2025-02-08 01:13:04,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:04,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:04,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:04,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:04,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:04,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:04,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 424 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:04,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:04,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:04,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:04,744 INFO L124 PetriNetUnfolderBase]: 645/1134 cut-off events. [2025-02-08 01:13:04,744 INFO L125 PetriNetUnfolderBase]: For 3776/3776 co-relation queries the response was YES. [2025-02-08 01:13:04,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 1134 events. 645/1134 cut-off events. For 3776/3776 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5454 event pairs, 214 based on Foata normal form. 8/1142 useless extension candidates. Maximal degree in co-relation 3735. Up to 444 conditions per place. [2025-02-08 01:13:04,749 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 64 selfloop transitions, 22 changer transitions 11/98 dead transitions. [2025-02-08 01:13:04,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 98 transitions, 871 flow [2025-02-08 01:13:04,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2025-02-08 01:13:04,750 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-02-08 01:13:04,750 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 424 flow. Second operand 7 states and 90 transitions. [2025-02-08 01:13:04,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 98 transitions, 871 flow [2025-02-08 01:13:04,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 838 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:04,756 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 520 flow [2025-02-08 01:13:04,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2025-02-08 01:13:04,757 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2025-02-08 01:13:04,757 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 520 flow [2025-02-08 01:13:04,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:04,757 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:04,757 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:04,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:13:04,757 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:04,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:04,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1992134740, now seen corresponding path program 3 times [2025-02-08 01:13:04,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:04,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735368121] [2025-02-08 01:13:04,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:04,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:04,767 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-02-08 01:13:04,780 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 25 statements. [2025-02-08 01:13:04,781 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:04,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:04,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735368121] [2025-02-08 01:13:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735368121] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374184291] [2025-02-08 01:13:04,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:04,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:04,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:04,852 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) [2025-02-08 01:13:04,853 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 [2025-02-08 01:13:04,898 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-02-08 01:13:04,915 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 25 statements. [2025-02-08 01:13:04,915 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:04,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:04,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:13:04,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:04,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:05,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374184291] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:05,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:05,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2025-02-08 01:13:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489879374] [2025-02-08 01:13:05,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:05,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:05,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:05,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:05,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-08 01:13:05,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:05,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:05,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:05,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:05,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:05,206 INFO L124 PetriNetUnfolderBase]: 687/1234 cut-off events. [2025-02-08 01:13:05,206 INFO L125 PetriNetUnfolderBase]: For 4124/4124 co-relation queries the response was YES. [2025-02-08 01:13:05,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4371 conditions, 1234 events. 687/1234 cut-off events. For 4124/4124 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6126 event pairs, 243 based on Foata normal form. 10/1244 useless extension candidates. Maximal degree in co-relation 4341. Up to 506 conditions per place. [2025-02-08 01:13:05,211 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 72 selfloop transitions, 26 changer transitions 5/104 dead transitions. [2025-02-08 01:13:05,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 961 flow [2025-02-08 01:13:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:05,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2025-02-08 01:13:05,212 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-02-08 01:13:05,212 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 520 flow. Second operand 6 states and 94 transitions. [2025-02-08 01:13:05,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 961 flow [2025-02-08 01:13:05,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 104 transitions, 923 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:05,220 INFO L231 Difference]: Finished difference. Result has 79 places, 61 transitions, 645 flow [2025-02-08 01:13:05,221 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=645, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2025-02-08 01:13:05,221 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2025-02-08 01:13:05,221 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 645 flow [2025-02-08 01:13:05,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:05,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:05,221 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:05,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 01:13:05,421 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 [2025-02-08 01:13:05,422 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:05,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1456396428, now seen corresponding path program 4 times [2025-02-08 01:13:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:05,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991549997] [2025-02-08 01:13:05,422 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:05,436 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 25 statements into 2 equivalence classes. [2025-02-08 01:13:05,444 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:05,444 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:05,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:05,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:05,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991549997] [2025-02-08 01:13:05,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991549997] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:05,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:05,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:05,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502068239] [2025-02-08 01:13:05,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:05,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:05,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:05,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:05,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:05,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:05,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 645 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:05,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:05,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:05,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:05,708 INFO L124 PetriNetUnfolderBase]: 672/1201 cut-off events. [2025-02-08 01:13:05,709 INFO L125 PetriNetUnfolderBase]: For 4643/4643 co-relation queries the response was YES. [2025-02-08 01:13:05,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 1201 events. 672/1201 cut-off events. For 4643/4643 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5879 event pairs, 246 based on Foata normal form. 5/1206 useless extension candidates. Maximal degree in co-relation 4435. Up to 452 conditions per place. [2025-02-08 01:13:05,715 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 60 selfloop transitions, 24 changer transitions 15/100 dead transitions. [2025-02-08 01:13:05,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 100 transitions, 951 flow [2025-02-08 01:13:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2025-02-08 01:13:05,716 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-02-08 01:13:05,716 INFO L175 Difference]: Start difference. First operand has 79 places, 61 transitions, 645 flow. Second operand 7 states and 98 transitions. [2025-02-08 01:13:05,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 100 transitions, 951 flow [2025-02-08 01:13:05,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 912 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-08 01:13:05,748 INFO L231 Difference]: Finished difference. Result has 83 places, 56 transitions, 594 flow [2025-02-08 01:13:05,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=83, PETRI_TRANSITIONS=56} [2025-02-08 01:13:05,749 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2025-02-08 01:13:05,749 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 56 transitions, 594 flow [2025-02-08 01:13:05,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:05,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:05,749 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:05,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 01:13:05,749 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:05,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash 25617434, now seen corresponding path program 2 times [2025-02-08 01:13:05,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:05,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922589424] [2025-02-08 01:13:05,750 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:05,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:05,756 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-02-08 01:13:05,763 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 22 of 25 statements. [2025-02-08 01:13:05,763 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:13:05,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:05,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:05,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922589424] [2025-02-08 01:13:05,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922589424] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:05,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:05,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568152374] [2025-02-08 01:13:05,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:05,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:05,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:05,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:05,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:05,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:05,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 56 transitions, 594 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:05,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:05,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:05,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:06,007 INFO L124 PetriNetUnfolderBase]: 701/1250 cut-off events. [2025-02-08 01:13:06,008 INFO L125 PetriNetUnfolderBase]: For 5210/5210 co-relation queries the response was YES. [2025-02-08 01:13:06,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 1250 events. 701/1250 cut-off events. For 5210/5210 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6183 event pairs, 311 based on Foata normal form. 22/1272 useless extension candidates. Maximal degree in co-relation 4603. Up to 567 conditions per place. [2025-02-08 01:13:06,015 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 60 selfloop transitions, 19 changer transitions 5/85 dead transitions. [2025-02-08 01:13:06,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 865 flow [2025-02-08 01:13:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2025-02-08 01:13:06,016 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 01:13:06,016 INFO L175 Difference]: Start difference. First operand has 83 places, 56 transitions, 594 flow. Second operand 5 states and 75 transitions. [2025-02-08 01:13:06,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 865 flow [2025-02-08 01:13:06,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 795 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-02-08 01:13:06,025 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 589 flow [2025-02-08 01:13:06,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=589, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2025-02-08 01:13:06,026 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2025-02-08 01:13:06,027 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 589 flow [2025-02-08 01:13:06,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:06,027 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:06,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 01:13:06,027 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:06,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1952675352, now seen corresponding path program 5 times [2025-02-08 01:13:06,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:06,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728697645] [2025-02-08 01:13:06,028 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:06,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:06,034 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-02-08 01:13:06,039 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 01:13:06,039 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:06,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:06,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728697645] [2025-02-08 01:13:06,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728697645] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:06,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:06,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:06,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245380465] [2025-02-08 01:13:06,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:06,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:06,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:06,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:06,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:06,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:06,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 589 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:06,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:06,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:06,334 INFO L124 PetriNetUnfolderBase]: 692/1241 cut-off events. [2025-02-08 01:13:06,335 INFO L125 PetriNetUnfolderBase]: For 4947/4947 co-relation queries the response was YES. [2025-02-08 01:13:06,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4533 conditions, 1241 events. 692/1241 cut-off events. For 4947/4947 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6066 event pairs, 276 based on Foata normal form. 9/1250 useless extension candidates. Maximal degree in co-relation 4503. Up to 532 conditions per place. [2025-02-08 01:13:06,340 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 71 selfloop transitions, 15 changer transitions 14/101 dead transitions. [2025-02-08 01:13:06,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 929 flow [2025-02-08 01:13:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:13:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:13:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2025-02-08 01:13:06,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2025-02-08 01:13:06,341 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 589 flow. Second operand 7 states and 96 transitions. [2025-02-08 01:13:06,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 929 flow [2025-02-08 01:13:06,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 895 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:06,349 INFO L231 Difference]: Finished difference. Result has 83 places, 53 transitions, 519 flow [2025-02-08 01:13:06,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=83, PETRI_TRANSITIONS=53} [2025-02-08 01:13:06,350 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2025-02-08 01:13:06,350 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 53 transitions, 519 flow [2025-02-08 01:13:06,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,350 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:06,350 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:06,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 01:13:06,351 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:06,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1321912642, now seen corresponding path program 6 times [2025-02-08 01:13:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:06,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671271912] [2025-02-08 01:13:06,351 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:06,357 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 3 equivalence classes. [2025-02-08 01:13:06,359 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 22 of 25 statements. [2025-02-08 01:13:06,359 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:13:06,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671271912] [2025-02-08 01:13:06,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671271912] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:06,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:06,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:13:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607409281] [2025-02-08 01:13:06,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:06,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:06,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:06,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:13:06,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:06,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 53 transitions, 519 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:06,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:06,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:06,565 INFO L124 PetriNetUnfolderBase]: 635/1122 cut-off events. [2025-02-08 01:13:06,566 INFO L125 PetriNetUnfolderBase]: For 4659/4659 co-relation queries the response was YES. [2025-02-08 01:13:06,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4154 conditions, 1122 events. 635/1122 cut-off events. For 4659/4659 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5246 event pairs, 284 based on Foata normal form. 10/1132 useless extension candidates. Maximal degree in co-relation 4123. Up to 530 conditions per place. [2025-02-08 01:13:06,570 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 62 selfloop transitions, 12 changer transitions 10/85 dead transitions. [2025-02-08 01:13:06,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 835 flow [2025-02-08 01:13:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:13:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:13:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-02-08 01:13:06,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2025-02-08 01:13:06,571 INFO L175 Difference]: Start difference. First operand has 83 places, 53 transitions, 519 flow. Second operand 5 states and 71 transitions. [2025-02-08 01:13:06,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 835 flow [2025-02-08 01:13:06,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 797 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-08 01:13:06,577 INFO L231 Difference]: Finished difference. Result has 79 places, 50 transitions, 495 flow [2025-02-08 01:13:06,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=495, PETRI_PLACES=79, PETRI_TRANSITIONS=50} [2025-02-08 01:13:06,577 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2025-02-08 01:13:06,577 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 50 transitions, 495 flow [2025-02-08 01:13:06,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:06,577 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:06,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 01:13:06,578 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:06,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1625460716, now seen corresponding path program 3 times [2025-02-08 01:13:06,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:06,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27601912] [2025-02-08 01:13:06,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:06,585 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-02-08 01:13:06,593 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 25 statements. [2025-02-08 01:13:06,593 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:06,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:06,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27601912] [2025-02-08 01:13:06,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27601912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090746069] [2025-02-08 01:13:06,635 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:06,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:06,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:06,637 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) [2025-02-08 01:13:06,638 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 [2025-02-08 01:13:06,681 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-02-08 01:13:06,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 24 of 25 statements. [2025-02-08 01:13:06,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:06,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:06,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:13:06,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:06,730 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:06,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090746069] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:06,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:13:06,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-02-08 01:13:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474565317] [2025-02-08 01:13:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:06,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:13:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:06,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:13:06,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:13:06,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:06,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 50 transitions, 495 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:06,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:06,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:06,887 INFO L124 PetriNetUnfolderBase]: 570/1010 cut-off events. [2025-02-08 01:13:06,887 INFO L125 PetriNetUnfolderBase]: For 4091/4091 co-relation queries the response was YES. [2025-02-08 01:13:06,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3712 conditions, 1010 events. 570/1010 cut-off events. For 4091/4091 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4597 event pairs, 207 based on Foata normal form. 11/1021 useless extension candidates. Maximal degree in co-relation 3682. Up to 515 conditions per place. [2025-02-08 01:13:06,892 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 66 selfloop transitions, 17 changer transitions 8/92 dead transitions. [2025-02-08 01:13:06,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 92 transitions, 864 flow [2025-02-08 01:13:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:13:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:13:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-02-08 01:13:06,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2025-02-08 01:13:06,894 INFO L175 Difference]: Start difference. First operand has 79 places, 50 transitions, 495 flow. Second operand 6 states and 86 transitions. [2025-02-08 01:13:06,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 92 transitions, 864 flow [2025-02-08 01:13:06,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 776 flow, removed 7 selfloop flow, removed 9 redundant places. [2025-02-08 01:13:06,900 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 515 flow [2025-02-08 01:13:06,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=515, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2025-02-08 01:13:06,900 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2025-02-08 01:13:06,900 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 515 flow [2025-02-08 01:13:06,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:06,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:06,901 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:06,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:07,105 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,SelfDestructingSolverStorable15 [2025-02-08 01:13:07,105 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:07,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1830602289, now seen corresponding path program 1 times [2025-02-08 01:13:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:07,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269777616] [2025-02-08 01:13:07,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:07,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:07,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:13:07,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:07,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:07,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:07,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:07,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269777616] [2025-02-08 01:13:07,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269777616] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:07,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23427796] [2025-02-08 01:13:07,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:13:07,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:07,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:07,887 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) [2025-02-08 01:13:07,887 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 [2025-02-08 01:13:07,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:13:07,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:07,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:07,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:07,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:13:07,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:08,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 105 [2025-02-08 01:13:08,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:08,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:08,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:08,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 104 [2025-02-08 01:13:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:08,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23427796] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:08,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:08,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2025-02-08 01:13:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889517891] [2025-02-08 01:13:08,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:08,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 01:13:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:08,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 01:13:08,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2025-02-08 01:13:08,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:08,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 515 flow. Second operand has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:08,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:08,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:08,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:11,228 INFO L124 PetriNetUnfolderBase]: 1669/3007 cut-off events. [2025-02-08 01:13:11,228 INFO L125 PetriNetUnfolderBase]: For 6927/6927 co-relation queries the response was YES. [2025-02-08 01:13:11,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9925 conditions, 3007 events. 1669/3007 cut-off events. For 6927/6927 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 17692 event pairs, 230 based on Foata normal form. 25/3032 useless extension candidates. Maximal degree in co-relation 9898. Up to 558 conditions per place. [2025-02-08 01:13:11,244 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 220 selfloop transitions, 81 changer transitions 47/349 dead transitions. [2025-02-08 01:13:11,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 349 transitions, 2718 flow [2025-02-08 01:13:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 01:13:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-08 01:13:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 408 transitions. [2025-02-08 01:13:11,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3675675675675676 [2025-02-08 01:13:11,246 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 515 flow. Second operand 37 states and 408 transitions. [2025-02-08 01:13:11,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 349 transitions, 2718 flow [2025-02-08 01:13:11,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 349 transitions, 2618 flow, removed 29 selfloop flow, removed 1 redundant places. [2025-02-08 01:13:11,259 INFO L231 Difference]: Finished difference. Result has 123 places, 130 transitions, 1399 flow [2025-02-08 01:13:11,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1399, PETRI_PLACES=123, PETRI_TRANSITIONS=130} [2025-02-08 01:13:11,260 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2025-02-08 01:13:11,260 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 130 transitions, 1399 flow [2025-02-08 01:13:11,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.909090909090909) internal successors, (130), 22 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:11,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:11,260 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:11,267 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 [2025-02-08 01:13:11,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:11,464 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:11,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1465383067, now seen corresponding path program 2 times [2025-02-08 01:13:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:11,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273848178] [2025-02-08 01:13:11,465 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:11,471 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:13:11,492 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:11,492 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:11,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:11,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273848178] [2025-02-08 01:13:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273848178] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139056458] [2025-02-08 01:13:11,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:11,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:11,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:11,992 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) [2025-02-08 01:13:11,993 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 [2025-02-08 01:13:12,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:13:12,057 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:12,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:12,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:12,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 01:13:12,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:12,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 89 [2025-02-08 01:13:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:12,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:12,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:12,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 291 treesize of output 163 [2025-02-08 01:13:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:12,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139056458] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:12,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:12,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2025-02-08 01:13:12,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562699767] [2025-02-08 01:13:12,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:12,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 01:13:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:12,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 01:13:12,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-02-08 01:13:12,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:12,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 130 transitions, 1399 flow. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 21 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:12,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:12,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:12,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:13,931 INFO L124 PetriNetUnfolderBase]: 2186/3946 cut-off events. [2025-02-08 01:13:13,932 INFO L125 PetriNetUnfolderBase]: For 22400/22400 co-relation queries the response was YES. [2025-02-08 01:13:13,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16154 conditions, 3946 events. 2186/3946 cut-off events. For 22400/22400 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 24566 event pairs, 601 based on Foata normal form. 4/3950 useless extension candidates. Maximal degree in co-relation 16109. Up to 1222 conditions per place. [2025-02-08 01:13:13,949 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 157 selfloop transitions, 98 changer transitions 22/278 dead transitions. [2025-02-08 01:13:13,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 278 transitions, 3022 flow [2025-02-08 01:13:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 01:13:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 01:13:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 199 transitions. [2025-02-08 01:13:13,951 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3685185185185185 [2025-02-08 01:13:13,951 INFO L175 Difference]: Start difference. First operand has 123 places, 130 transitions, 1399 flow. Second operand 18 states and 199 transitions. [2025-02-08 01:13:13,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 278 transitions, 3022 flow [2025-02-08 01:13:14,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 278 transitions, 2717 flow, removed 128 selfloop flow, removed 8 redundant places. [2025-02-08 01:13:14,053 INFO L231 Difference]: Finished difference. Result has 138 places, 180 transitions, 2006 flow [2025-02-08 01:13:14,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2006, PETRI_PLACES=138, PETRI_TRANSITIONS=180} [2025-02-08 01:13:14,054 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2025-02-08 01:13:14,054 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 180 transitions, 2006 flow [2025-02-08 01:13:14,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 21 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:14,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:14,054 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:14,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 01:13:14,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 01:13:14,255 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:14,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1559232773, now seen corresponding path program 3 times [2025-02-08 01:13:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667588503] [2025-02-08 01:13:14,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:14,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 3 equivalence classes. [2025-02-08 01:13:14,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 27 statements. [2025-02-08 01:13:14,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:13:14,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:14,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:14,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667588503] [2025-02-08 01:13:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667588503] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:13:14,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:13:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 01:13:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410592836] [2025-02-08 01:13:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:13:14,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 01:13:14,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:14,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 01:13:14,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-08 01:13:14,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:14,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 180 transitions, 2006 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:14,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:14,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:14,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:15,247 INFO L124 PetriNetUnfolderBase]: 2304/4156 cut-off events. [2025-02-08 01:13:15,248 INFO L125 PetriNetUnfolderBase]: For 30842/30842 co-relation queries the response was YES. [2025-02-08 01:13:15,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18224 conditions, 4156 events. 2304/4156 cut-off events. For 30842/30842 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 26396 event pairs, 1467 based on Foata normal form. 1/4157 useless extension candidates. Maximal degree in co-relation 18176. Up to 3413 conditions per place. [2025-02-08 01:13:15,265 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 186 selfloop transitions, 36 changer transitions 9/232 dead transitions. [2025-02-08 01:13:15,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 232 transitions, 2838 flow [2025-02-08 01:13:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:13:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:13:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2025-02-08 01:13:15,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2025-02-08 01:13:15,266 INFO L175 Difference]: Start difference. First operand has 138 places, 180 transitions, 2006 flow. Second operand 9 states and 102 transitions. [2025-02-08 01:13:15,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 232 transitions, 2838 flow [2025-02-08 01:13:15,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 232 transitions, 2693 flow, removed 60 selfloop flow, removed 4 redundant places. [2025-02-08 01:13:15,355 INFO L231 Difference]: Finished difference. Result has 145 places, 193 transitions, 2143 flow [2025-02-08 01:13:15,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2143, PETRI_PLACES=145, PETRI_TRANSITIONS=193} [2025-02-08 01:13:15,356 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2025-02-08 01:13:15,356 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 193 transitions, 2143 flow [2025-02-08 01:13:15,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:15,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:15,356 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:15,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 01:13:15,357 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:15,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:15,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2098266415, now seen corresponding path program 4 times [2025-02-08 01:13:15,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:15,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376986179] [2025-02-08 01:13:15,357 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:15,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:15,362 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:13:15,372 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:15,373 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:15,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:15,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:15,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376986179] [2025-02-08 01:13:15,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376986179] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:15,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085092115] [2025-02-08 01:13:15,781 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:15,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:15,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:15,783 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) [2025-02-08 01:13:15,784 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 [2025-02-08 01:13:15,832 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-08 01:13:15,854 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:15,854 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:15,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:15,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 01:13:15,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:16,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 102 [2025-02-08 01:13:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:16,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:16,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:16,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 75 [2025-02-08 01:13:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:16,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085092115] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:16,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:16,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 18 [2025-02-08 01:13:16,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292324621] [2025-02-08 01:13:16,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:16,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:13:16,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:16,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:13:16,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:13:16,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:16,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 193 transitions, 2143 flow. Second operand has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:16,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:16,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:16,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:17,379 INFO L124 PetriNetUnfolderBase]: 2398/4330 cut-off events. [2025-02-08 01:13:17,380 INFO L125 PetriNetUnfolderBase]: For 33678/33678 co-relation queries the response was YES. [2025-02-08 01:13:17,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19795 conditions, 4330 events. 2398/4330 cut-off events. For 33678/33678 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 27701 event pairs, 755 based on Foata normal form. 3/4333 useless extension candidates. Maximal degree in co-relation 19744. Up to 1548 conditions per place. [2025-02-08 01:13:17,401 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 155 selfloop transitions, 105 changer transitions 28/289 dead transitions. [2025-02-08 01:13:17,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 289 transitions, 3512 flow [2025-02-08 01:13:17,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:13:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:13:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 171 transitions. [2025-02-08 01:13:17,402 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3352941176470588 [2025-02-08 01:13:17,402 INFO L175 Difference]: Start difference. First operand has 145 places, 193 transitions, 2143 flow. Second operand 17 states and 171 transitions. [2025-02-08 01:13:17,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 289 transitions, 3512 flow [2025-02-08 01:13:17,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 289 transitions, 3425 flow, removed 30 selfloop flow, removed 4 redundant places. [2025-02-08 01:13:17,503 INFO L231 Difference]: Finished difference. Result has 164 places, 211 transitions, 2605 flow [2025-02-08 01:13:17,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2605, PETRI_PLACES=164, PETRI_TRANSITIONS=211} [2025-02-08 01:13:17,503 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2025-02-08 01:13:17,503 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 211 transitions, 2605 flow [2025-02-08 01:13:17,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.444444444444445) internal successors, (116), 18 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:17,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:17,504 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:17,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 01:13:17,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:17,708 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:17,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash 263208601, now seen corresponding path program 5 times [2025-02-08 01:13:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057372259] [2025-02-08 01:13:17,709 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:17,715 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-02-08 01:13:17,725 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:17,726 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:17,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057372259] [2025-02-08 01:13:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057372259] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508781847] [2025-02-08 01:13:18,073 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:18,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:18,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:18,075 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) [2025-02-08 01:13:18,077 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 [2025-02-08 01:13:18,121 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 3 equivalence classes. [2025-02-08 01:13:18,140 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:18,140 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:18,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:18,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:13:18,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:18,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 80 [2025-02-08 01:13:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:18,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:18,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:18,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 85 [2025-02-08 01:13:18,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:18,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508781847] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:18,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:18,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2025-02-08 01:13:18,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935372176] [2025-02-08 01:13:18,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:18,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:13:18,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:18,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:13:18,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:13:18,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:18,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 211 transitions, 2605 flow. Second operand has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:18,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:18,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:18,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:20,549 INFO L124 PetriNetUnfolderBase]: 2894/5288 cut-off events. [2025-02-08 01:13:20,550 INFO L125 PetriNetUnfolderBase]: For 62866/62866 co-relation queries the response was YES. [2025-02-08 01:13:20,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26638 conditions, 5288 events. 2894/5288 cut-off events. For 62866/62866 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 35795 event pairs, 875 based on Foata normal form. 4/5292 useless extension candidates. Maximal degree in co-relation 26580. Up to 1920 conditions per place. [2025-02-08 01:13:20,576 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 264 selfloop transitions, 126 changer transitions 105/496 dead transitions. [2025-02-08 01:13:20,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 496 transitions, 6125 flow [2025-02-08 01:13:20,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 01:13:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-08 01:13:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 306 transitions. [2025-02-08 01:13:20,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2025-02-08 01:13:20,578 INFO L175 Difference]: Start difference. First operand has 164 places, 211 transitions, 2605 flow. Second operand 27 states and 306 transitions. [2025-02-08 01:13:20,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 496 transitions, 6125 flow [2025-02-08 01:13:20,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 496 transitions, 5970 flow, removed 61 selfloop flow, removed 6 redundant places. [2025-02-08 01:13:20,749 INFO L231 Difference]: Finished difference. Result has 194 places, 275 transitions, 3839 flow [2025-02-08 01:13:20,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3839, PETRI_PLACES=194, PETRI_TRANSITIONS=275} [2025-02-08 01:13:20,749 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2025-02-08 01:13:20,749 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 275 transitions, 3839 flow [2025-02-08 01:13:20,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:20,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:20,750 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:20,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 01:13:20,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:20,950 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:20,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:20,951 INFO L85 PathProgramCache]: Analyzing trace with hash 161423433, now seen corresponding path program 6 times [2025-02-08 01:13:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:20,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016439011] [2025-02-08 01:13:20,951 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:20,955 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-02-08 01:13:20,970 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:20,971 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:13:20,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:13:21,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016439011] [2025-02-08 01:13:21,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016439011] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:21,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940303915] [2025-02-08 01:13:21,649 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:21,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:21,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:21,652 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) [2025-02-08 01:13:21,654 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 [2025-02-08 01:13:21,702 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 3 equivalence classes. [2025-02-08 01:13:21,724 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:21,724 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:13:21,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:21,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 01:13:21,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:21,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 89 [2025-02-08 01:13:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:22,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:22,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:22,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 92 [2025-02-08 01:13:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:22,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940303915] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:22,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:22,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 28 [2025-02-08 01:13:22,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510011352] [2025-02-08 01:13:22,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:22,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 01:13:22,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:22,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 01:13:22,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2025-02-08 01:13:22,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:22,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 275 transitions, 3839 flow. Second operand has 28 states, 28 states have (on average 5.428571428571429) internal successors, (152), 28 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:22,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:22,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:22,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:24,202 INFO L124 PetriNetUnfolderBase]: 3376/6148 cut-off events. [2025-02-08 01:13:24,202 INFO L125 PetriNetUnfolderBase]: For 107294/107294 co-relation queries the response was YES. [2025-02-08 01:13:24,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34977 conditions, 6148 events. 3376/6148 cut-off events. For 107294/107294 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 42313 event pairs, 730 based on Foata normal form. 2/6150 useless extension candidates. Maximal degree in co-relation 34908. Up to 1381 conditions per place. [2025-02-08 01:13:24,238 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 319 selfloop transitions, 138 changer transitions 31/489 dead transitions. [2025-02-08 01:13:24,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 489 transitions, 7302 flow [2025-02-08 01:13:24,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 01:13:24,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 01:13:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 202 transitions. [2025-02-08 01:13:24,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32063492063492066 [2025-02-08 01:13:24,239 INFO L175 Difference]: Start difference. First operand has 194 places, 275 transitions, 3839 flow. Second operand 21 states and 202 transitions. [2025-02-08 01:13:24,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 489 transitions, 7302 flow [2025-02-08 01:13:24,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 489 transitions, 6643 flow, removed 279 selfloop flow, removed 11 redundant places. [2025-02-08 01:13:24,629 INFO L231 Difference]: Finished difference. Result has 205 places, 328 transitions, 4527 flow [2025-02-08 01:13:24,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=3411, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4527, PETRI_PLACES=205, PETRI_TRANSITIONS=328} [2025-02-08 01:13:24,630 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2025-02-08 01:13:24,630 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 328 transitions, 4527 flow [2025-02-08 01:13:24,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.428571428571429) internal successors, (152), 28 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:24,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:24,630 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:24,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 01:13:24,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-02-08 01:13:24,831 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:24,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1431542967, now seen corresponding path program 7 times [2025-02-08 01:13:24,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:24,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750686143] [2025-02-08 01:13:24,831 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:13:24,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:24,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:13:24,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:24,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:24,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750686143] [2025-02-08 01:13:25,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750686143] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604994839] [2025-02-08 01:13:25,417 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:13:25,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:25,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:25,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:25,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 01:13:25,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 01:13:25,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 01:13:25,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:25,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:25,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:13:25,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:25,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 118 [2025-02-08 01:13:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:25,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:26,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:26,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 104 [2025-02-08 01:13:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604994839] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:26,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:26,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2025-02-08 01:13:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223484305] [2025-02-08 01:13:26,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:26,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 01:13:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:26,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 01:13:26,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-02-08 01:13:26,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:26,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 328 transitions, 4527 flow. Second operand has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:26,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:26,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:26,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:28,269 INFO L124 PetriNetUnfolderBase]: 3682/6717 cut-off events. [2025-02-08 01:13:28,270 INFO L125 PetriNetUnfolderBase]: For 98424/98424 co-relation queries the response was YES. [2025-02-08 01:13:28,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37941 conditions, 6717 events. 3682/6717 cut-off events. For 98424/98424 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 47142 event pairs, 1083 based on Foata normal form. 12/6729 useless extension candidates. Maximal degree in co-relation 37872. Up to 2788 conditions per place. [2025-02-08 01:13:28,314 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 374 selfloop transitions, 191 changer transitions 77/643 dead transitions. [2025-02-08 01:13:28,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 643 transitions, 9040 flow [2025-02-08 01:13:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-08 01:13:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-02-08 01:13:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 423 transitions. [2025-02-08 01:13:28,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3525 [2025-02-08 01:13:28,316 INFO L175 Difference]: Start difference. First operand has 205 places, 328 transitions, 4527 flow. Second operand 40 states and 423 transitions. [2025-02-08 01:13:28,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 643 transitions, 9040 flow [2025-02-08 01:13:28,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 643 transitions, 8679 flow, removed 179 selfloop flow, removed 3 redundant places. [2025-02-08 01:13:28,740 INFO L231 Difference]: Finished difference. Result has 266 places, 401 transitions, 6060 flow [2025-02-08 01:13:28,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=4273, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6060, PETRI_PLACES=266, PETRI_TRANSITIONS=401} [2025-02-08 01:13:28,741 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2025-02-08 01:13:28,741 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 401 transitions, 6060 flow [2025-02-08 01:13:28,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.863636363636363) internal successors, (129), 22 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:28,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:28,741 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:28,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:28,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:28,942 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:28,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:28,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1060033950, now seen corresponding path program 8 times [2025-02-08 01:13:28,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:28,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631070422] [2025-02-08 01:13:28,942 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:28,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:28,947 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:28,956 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:28,956 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:28,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:29,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:29,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631070422] [2025-02-08 01:13:29,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631070422] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:29,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325473145] [2025-02-08 01:13:29,211 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:29,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:29,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:29,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:29,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 01:13:29,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:29,281 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:29,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:29,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:29,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 01:13:29,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:29,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:29,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:29,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 28 [2025-02-08 01:13:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:29,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325473145] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:29,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:29,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2025-02-08 01:13:29,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332961528] [2025-02-08 01:13:29,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:29,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 01:13:29,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:29,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 01:13:29,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2025-02-08 01:13:29,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:29,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 401 transitions, 6060 flow. Second operand has 20 states, 20 states have (on average 5.95) internal successors, (119), 20 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:29,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:29,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:29,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:31,105 INFO L124 PetriNetUnfolderBase]: 3824/6992 cut-off events. [2025-02-08 01:13:31,106 INFO L125 PetriNetUnfolderBase]: For 152637/152637 co-relation queries the response was YES. [2025-02-08 01:13:31,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43739 conditions, 6992 events. 3824/6992 cut-off events. For 152637/152637 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 49927 event pairs, 624 based on Foata normal form. 54/7034 useless extension candidates. Maximal degree in co-relation 43645. Up to 1561 conditions per place. [2025-02-08 01:13:31,164 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 390 selfloop transitions, 163 changer transitions 26/580 dead transitions. [2025-02-08 01:13:31,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 580 transitions, 9149 flow [2025-02-08 01:13:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 01:13:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-02-08 01:13:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 207 transitions. [2025-02-08 01:13:31,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2025-02-08 01:13:31,165 INFO L175 Difference]: Start difference. First operand has 266 places, 401 transitions, 6060 flow. Second operand 21 states and 207 transitions. [2025-02-08 01:13:31,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 580 transitions, 9149 flow [2025-02-08 01:13:31,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 580 transitions, 8423 flow, removed 334 selfloop flow, removed 8 redundant places. [2025-02-08 01:13:31,934 INFO L231 Difference]: Finished difference. Result has 284 places, 430 transitions, 6252 flow [2025-02-08 01:13:31,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5491, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6252, PETRI_PLACES=284, PETRI_TRANSITIONS=430} [2025-02-08 01:13:31,935 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 255 predicate places. [2025-02-08 01:13:31,935 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 430 transitions, 6252 flow [2025-02-08 01:13:31,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.95) internal successors, (119), 20 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:31,935 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:31,935 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:31,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:32,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:32,140 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:32,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1710972746, now seen corresponding path program 9 times [2025-02-08 01:13:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:32,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699240654] [2025-02-08 01:13:32,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:32,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:32,146 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:32,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 29 statements. [2025-02-08 01:13:32,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:32,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:32,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699240654] [2025-02-08 01:13:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699240654] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:32,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812449800] [2025-02-08 01:13:32,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:32,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:32,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:32,514 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:32,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 01:13:32,565 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:32,584 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 29 statements. [2025-02-08 01:13:32,585 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:32,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:32,586 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 01:13:32,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:32,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 50 [2025-02-08 01:13:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:32,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:32,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:32,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 55 [2025-02-08 01:13:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:33,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812449800] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:33,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:33,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2025-02-08 01:13:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24558778] [2025-02-08 01:13:33,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:33,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 01:13:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:33,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 01:13:33,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-02-08 01:13:33,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:33,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 430 transitions, 6252 flow. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:33,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:33,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:33,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:34,643 INFO L124 PetriNetUnfolderBase]: 3823/6989 cut-off events. [2025-02-08 01:13:34,643 INFO L125 PetriNetUnfolderBase]: For 153587/153587 co-relation queries the response was YES. [2025-02-08 01:13:34,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45085 conditions, 6989 events. 3823/6989 cut-off events. For 153587/153587 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 49737 event pairs, 848 based on Foata normal form. 15/6992 useless extension candidates. Maximal degree in co-relation 44985. Up to 1958 conditions per place. [2025-02-08 01:13:34,705 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 403 selfloop transitions, 218 changer transitions 55/677 dead transitions. [2025-02-08 01:13:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 677 transitions, 10484 flow [2025-02-08 01:13:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 01:13:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 01:13:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 252 transitions. [2025-02-08 01:13:34,706 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3230769230769231 [2025-02-08 01:13:34,706 INFO L175 Difference]: Start difference. First operand has 284 places, 430 transitions, 6252 flow. Second operand 26 states and 252 transitions. [2025-02-08 01:13:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 677 transitions, 10484 flow [2025-02-08 01:13:35,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 677 transitions, 10133 flow, removed 40 selfloop flow, removed 9 redundant places. [2025-02-08 01:13:35,448 INFO L231 Difference]: Finished difference. Result has 307 places, 485 transitions, 7332 flow [2025-02-08 01:13:35,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=5963, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7332, PETRI_PLACES=307, PETRI_TRANSITIONS=485} [2025-02-08 01:13:35,449 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 278 predicate places. [2025-02-08 01:13:35,449 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 485 transitions, 7332 flow [2025-02-08 01:13:35,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:35,449 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:35,449 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:35,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 01:13:35,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-08 01:13:35,650 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:35,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash -991656566, now seen corresponding path program 10 times [2025-02-08 01:13:35,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:35,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739762591] [2025-02-08 01:13:35,650 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:35,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:35,655 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:35,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:35,661 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:35,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:35,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:35,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739762591] [2025-02-08 01:13:35,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739762591] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:35,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991669240] [2025-02-08 01:13:35,884 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:35,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:35,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:35,886 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:35,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 01:13:35,933 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:35,950 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:35,950 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:35,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:35,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:13:35,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:36,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 50 [2025-02-08 01:13:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:36,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:36,189 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:13:36,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 46 [2025-02-08 01:13:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:36,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991669240] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:36,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:36,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2025-02-08 01:13:36,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231117733] [2025-02-08 01:13:36,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:36,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:13:36,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:36,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:13:36,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:13:36,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:36,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 485 transitions, 7332 flow. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:36,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:36,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:36,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:38,070 INFO L124 PetriNetUnfolderBase]: 3557/6502 cut-off events. [2025-02-08 01:13:38,070 INFO L125 PetriNetUnfolderBase]: For 162178/162178 co-relation queries the response was YES. [2025-02-08 01:13:38,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46377 conditions, 6502 events. 3557/6502 cut-off events. For 162178/162178 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 45421 event pairs, 496 based on Foata normal form. 3/6497 useless extension candidates. Maximal degree in co-relation 46270. Up to 1259 conditions per place. [2025-02-08 01:13:38,142 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 334 selfloop transitions, 268 changer transitions 52/655 dead transitions. [2025-02-08 01:13:38,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 655 transitions, 10888 flow [2025-02-08 01:13:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 01:13:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 01:13:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 198 transitions. [2025-02-08 01:13:38,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28695652173913044 [2025-02-08 01:13:38,144 INFO L175 Difference]: Start difference. First operand has 307 places, 485 transitions, 7332 flow. Second operand 23 states and 198 transitions. [2025-02-08 01:13:38,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 655 transitions, 10888 flow [2025-02-08 01:13:39,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 655 transitions, 10491 flow, removed 170 selfloop flow, removed 5 redundant places. [2025-02-08 01:13:39,076 INFO L231 Difference]: Finished difference. Result has 327 places, 521 transitions, 8381 flow [2025-02-08 01:13:39,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8381, PETRI_PLACES=327, PETRI_TRANSITIONS=521} [2025-02-08 01:13:39,076 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 298 predicate places. [2025-02-08 01:13:39,076 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 521 transitions, 8381 flow [2025-02-08 01:13:39,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 19 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:39,076 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:39,076 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:39,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-08 01:13:39,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-08 01:13:39,277 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:39,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2018178506, now seen corresponding path program 11 times [2025-02-08 01:13:39,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:39,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663769638] [2025-02-08 01:13:39,278 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:39,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:39,282 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:39,289 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:39,290 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:39,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:13:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:39,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663769638] [2025-02-08 01:13:39,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663769638] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:39,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554250710] [2025-02-08 01:13:39,514 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:13:39,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:39,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:39,517 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:39,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 01:13:39,571 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:39,592 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:39,592 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:13:39,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:39,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 01:13:39,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:39,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:39,769 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:13:39,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 19 [2025-02-08 01:13:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554250710] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:39,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:39,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2025-02-08 01:13:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357174126] [2025-02-08 01:13:39,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:39,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 01:13:39,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:39,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 01:13:39,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-02-08 01:13:39,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:39,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 521 transitions, 8381 flow. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:39,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:39,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:39,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:41,184 INFO L124 PetriNetUnfolderBase]: 3563/6511 cut-off events. [2025-02-08 01:13:41,184 INFO L125 PetriNetUnfolderBase]: For 169985/169985 co-relation queries the response was YES. [2025-02-08 01:13:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46984 conditions, 6511 events. 3563/6511 cut-off events. For 169985/169985 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 45836 event pairs, 233 based on Foata normal form. 54/6557 useless extension candidates. Maximal degree in co-relation 46872. Up to 2358 conditions per place. [2025-02-08 01:13:41,253 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 444 selfloop transitions, 219 changer transitions 24/688 dead transitions. [2025-02-08 01:13:41,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 688 transitions, 11710 flow [2025-02-08 01:13:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 01:13:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-08 01:13:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 198 transitions. [2025-02-08 01:13:41,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125 [2025-02-08 01:13:41,254 INFO L175 Difference]: Start difference. First operand has 327 places, 521 transitions, 8381 flow. Second operand 16 states and 198 transitions. [2025-02-08 01:13:41,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 688 transitions, 11710 flow [2025-02-08 01:13:42,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 688 transitions, 11033 flow, removed 187 selfloop flow, removed 13 redundant places. [2025-02-08 01:13:42,490 INFO L231 Difference]: Finished difference. Result has 332 places, 534 transitions, 8858 flow [2025-02-08 01:13:42,490 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=7782, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=8858, PETRI_PLACES=332, PETRI_TRANSITIONS=534} [2025-02-08 01:13:42,490 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 303 predicate places. [2025-02-08 01:13:42,490 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 534 transitions, 8858 flow [2025-02-08 01:13:42,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:42,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:42,490 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:42,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:42,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:42,691 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:42,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 127013842, now seen corresponding path program 12 times [2025-02-08 01:13:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:42,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559394946] [2025-02-08 01:13:42,692 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:42,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:42,696 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:42,703 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:42,704 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:13:42,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559394946] [2025-02-08 01:13:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559394946] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241430627] [2025-02-08 01:13:42,913 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:13:42,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:42,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:42,915 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:42,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 01:13:42,969 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:42,985 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:42,986 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:13:42,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:42,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-08 01:13:42,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:43,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 59 [2025-02-08 01:13:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:43,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:43,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:43,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 28 [2025-02-08 01:13:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:43,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241430627] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:43,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2025-02-08 01:13:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141690598] [2025-02-08 01:13:43,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:43,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:13:43,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:43,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:13:43,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:13:43,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:43,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 534 transitions, 8858 flow. Second operand has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:43,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:43,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:45,149 INFO L124 PetriNetUnfolderBase]: 3674/6697 cut-off events. [2025-02-08 01:13:45,150 INFO L125 PetriNetUnfolderBase]: For 171712/171712 co-relation queries the response was YES. [2025-02-08 01:13:45,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48478 conditions, 6697 events. 3674/6697 cut-off events. For 171712/171712 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 47173 event pairs, 244 based on Foata normal form. 55/6744 useless extension candidates. Maximal degree in co-relation 48365. Up to 1376 conditions per place. [2025-02-08 01:13:45,226 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 385 selfloop transitions, 317 changer transitions 27/730 dead transitions. [2025-02-08 01:13:45,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 730 transitions, 12494 flow [2025-02-08 01:13:45,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 01:13:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 01:13:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 297 transitions. [2025-02-08 01:13:45,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3413793103448276 [2025-02-08 01:13:45,227 INFO L175 Difference]: Start difference. First operand has 332 places, 534 transitions, 8858 flow. Second operand 29 states and 297 transitions. [2025-02-08 01:13:45,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 730 transitions, 12494 flow [2025-02-08 01:13:46,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 730 transitions, 11935 flow, removed 212 selfloop flow, removed 12 redundant places. [2025-02-08 01:13:46,178 INFO L231 Difference]: Finished difference. Result has 354 places, 566 transitions, 9905 flow [2025-02-08 01:13:46,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=8433, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9905, PETRI_PLACES=354, PETRI_TRANSITIONS=566} [2025-02-08 01:13:46,178 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 325 predicate places. [2025-02-08 01:13:46,179 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 566 transitions, 9905 flow [2025-02-08 01:13:46,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.684210526315789) internal successors, (108), 19 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:46,179 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:46,179 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:46,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 01:13:46,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-08 01:13:46,379 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:46,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1392287124, now seen corresponding path program 13 times [2025-02-08 01:13:46,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:46,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36977465] [2025-02-08 01:13:46,380 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:13:46,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:46,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:13:46,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:46,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:46,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:46,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:46,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36977465] [2025-02-08 01:13:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36977465] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:46,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115188082] [2025-02-08 01:13:46,631 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:13:46,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:46,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:46,635 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:46,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 01:13:46,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:13:46,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:46,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:13:46,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:46,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-08 01:13:46,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:46,803 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:46,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:46,883 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:13:46,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-02-08 01:13:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:46,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115188082] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:46,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:46,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2025-02-08 01:13:46,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948614553] [2025-02-08 01:13:46,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:46,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:13:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:46,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:13:46,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:13:46,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:46,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 566 transitions, 9905 flow. Second operand has 18 states, 18 states have (on average 5.944444444444445) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:46,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:46,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:46,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:48,211 INFO L124 PetriNetUnfolderBase]: 3723/6785 cut-off events. [2025-02-08 01:13:48,211 INFO L125 PetriNetUnfolderBase]: For 108301/108301 co-relation queries the response was YES. [2025-02-08 01:13:48,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46473 conditions, 6785 events. 3723/6785 cut-off events. For 108301/108301 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 47787 event pairs, 1848 based on Foata normal form. 34/6811 useless extension candidates. Maximal degree in co-relation 46357. Up to 5390 conditions per place. [2025-02-08 01:13:48,275 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 499 selfloop transitions, 122 changer transitions 22/644 dead transitions. [2025-02-08 01:13:48,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 644 transitions, 12039 flow [2025-02-08 01:13:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 01:13:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 01:13:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 138 transitions. [2025-02-08 01:13:48,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2025-02-08 01:13:48,276 INFO L175 Difference]: Start difference. First operand has 354 places, 566 transitions, 9905 flow. Second operand 14 states and 138 transitions. [2025-02-08 01:13:48,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 644 transitions, 12039 flow [2025-02-08 01:13:49,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 644 transitions, 11527 flow, removed 96 selfloop flow, removed 15 redundant places. [2025-02-08 01:13:49,101 INFO L231 Difference]: Finished difference. Result has 356 places, 575 transitions, 9902 flow [2025-02-08 01:13:49,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=9410, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9902, PETRI_PLACES=356, PETRI_TRANSITIONS=575} [2025-02-08 01:13:49,102 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 327 predicate places. [2025-02-08 01:13:49,102 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 575 transitions, 9902 flow [2025-02-08 01:13:49,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.944444444444445) internal successors, (107), 18 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:49,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:49,102 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:49,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 01:13:49,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-08 01:13:49,303 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:49,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1342010968, now seen corresponding path program 14 times [2025-02-08 01:13:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17351293] [2025-02-08 01:13:49,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:49,326 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:49,337 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:49,338 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:49,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:49,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:49,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17351293] [2025-02-08 01:13:49,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17351293] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:49,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182763360] [2025-02-08 01:13:49,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:13:49,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:49,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:49,604 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:49,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 01:13:49,654 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:49,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:49,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:13:49,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:49,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:13:49,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:49,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:49,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:49,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 27 [2025-02-08 01:13:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:50,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182763360] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:50,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:50,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2025-02-08 01:13:50,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998703761] [2025-02-08 01:13:50,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:50,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 01:13:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:50,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 01:13:50,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-02-08 01:13:50,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:50,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 575 transitions, 9902 flow. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:50,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:50,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:50,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:51,657 INFO L124 PetriNetUnfolderBase]: 3847/6997 cut-off events. [2025-02-08 01:13:51,658 INFO L125 PetriNetUnfolderBase]: For 104029/104029 co-relation queries the response was YES. [2025-02-08 01:13:51,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47467 conditions, 6997 events. 3847/6997 cut-off events. For 104029/104029 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 49502 event pairs, 1069 based on Foata normal form. 54/7043 useless extension candidates. Maximal degree in co-relation 47349. Up to 3180 conditions per place. [2025-02-08 01:13:51,725 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 415 selfloop transitions, 255 changer transitions 15/686 dead transitions. [2025-02-08 01:13:51,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 686 transitions, 12526 flow [2025-02-08 01:13:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 01:13:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-08 01:13:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 183 transitions. [2025-02-08 01:13:51,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3388888888888889 [2025-02-08 01:13:51,726 INFO L175 Difference]: Start difference. First operand has 356 places, 575 transitions, 9902 flow. Second operand 18 states and 183 transitions. [2025-02-08 01:13:51,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 686 transitions, 12526 flow [2025-02-08 01:13:52,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 686 transitions, 12333 flow, removed 27 selfloop flow, removed 10 redundant places. [2025-02-08 01:13:52,515 INFO L231 Difference]: Finished difference. Result has 365 places, 587 transitions, 10509 flow [2025-02-08 01:13:52,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=9715, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10509, PETRI_PLACES=365, PETRI_TRANSITIONS=587} [2025-02-08 01:13:52,516 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 336 predicate places. [2025-02-08 01:13:52,516 INFO L471 AbstractCegarLoop]: Abstraction has has 365 places, 587 transitions, 10509 flow [2025-02-08 01:13:52,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:52,516 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:52,516 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:52,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-08 01:13:52,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:52,717 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:52,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash 926152326, now seen corresponding path program 15 times [2025-02-08 01:13:52,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643789123] [2025-02-08 01:13:52,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:52,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:52,722 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:52,733 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 29 statements. [2025-02-08 01:13:52,733 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:52,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643789123] [2025-02-08 01:13:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643789123] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606442950] [2025-02-08 01:13:52,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:13:52,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:52,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:52,904 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:52,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 01:13:52,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:13:52,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 29 statements. [2025-02-08 01:13:52,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:13:52,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:52,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 01:13:52,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:53,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 59 [2025-02-08 01:13:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:53,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:53,143 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:13:53,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-02-08 01:13:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:53,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606442950] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:53,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:53,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2025-02-08 01:13:53,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783404609] [2025-02-08 01:13:53,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:53,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 01:13:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:53,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 01:13:53,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2025-02-08 01:13:53,172 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:53,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 587 transitions, 10509 flow. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:53,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:53,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:53,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:54,972 INFO L124 PetriNetUnfolderBase]: 3992/7294 cut-off events. [2025-02-08 01:13:54,972 INFO L125 PetriNetUnfolderBase]: For 119341/119341 co-relation queries the response was YES. [2025-02-08 01:13:55,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50223 conditions, 7294 events. 3992/7294 cut-off events. For 119341/119341 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 52360 event pairs, 1869 based on Foata normal form. 52/7338 useless extension candidates. Maximal degree in co-relation 50103. Up to 5377 conditions per place. [2025-02-08 01:13:55,044 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 535 selfloop transitions, 161 changer transitions 32/729 dead transitions. [2025-02-08 01:13:55,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 729 transitions, 13478 flow [2025-02-08 01:13:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 01:13:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 01:13:55,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 221 transitions. [2025-02-08 01:13:55,045 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32028985507246377 [2025-02-08 01:13:55,046 INFO L175 Difference]: Start difference. First operand has 365 places, 587 transitions, 10509 flow. Second operand 23 states and 221 transitions. [2025-02-08 01:13:55,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 729 transitions, 13478 flow [2025-02-08 01:13:55,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 729 transitions, 13138 flow, removed 64 selfloop flow, removed 9 redundant places. [2025-02-08 01:13:55,853 INFO L231 Difference]: Finished difference. Result has 391 places, 617 transitions, 11266 flow [2025-02-08 01:13:55,854 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=10181, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=11266, PETRI_PLACES=391, PETRI_TRANSITIONS=617} [2025-02-08 01:13:55,854 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 362 predicate places. [2025-02-08 01:13:55,854 INFO L471 AbstractCegarLoop]: Abstraction has has 391 places, 617 transitions, 11266 flow [2025-02-08 01:13:55,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:55,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:55,855 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:55,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-08 01:13:56,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:56,055 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:13:56,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:13:56,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1343626298, now seen corresponding path program 16 times [2025-02-08 01:13:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:13:56,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989953919] [2025-02-08 01:13:56,056 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:56,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:13:56,062 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:56,071 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:56,071 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:56,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:13:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989953919] [2025-02-08 01:13:56,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989953919] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:13:56,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822469185] [2025-02-08 01:13:56,413 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:13:56,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:13:56,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:13:56,415 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:13:56,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 01:13:56,467 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:13:56,484 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:13:56,484 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:13:56,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:13:56,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:13:56,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:13:56,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2025-02-08 01:13:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:56,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:13:56,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:13:56,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 55 [2025-02-08 01:13:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:13:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822469185] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:13:57,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:13:57,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2025-02-08 01:13:57,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602142833] [2025-02-08 01:13:57,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:13:57,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 01:13:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:13:57,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 01:13:57,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-02-08 01:13:57,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:13:57,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 617 transitions, 11266 flow. Second operand has 20 states, 20 states have (on average 6.0) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:57,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:13:57,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:13:57,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:13:58,819 INFO L124 PetriNetUnfolderBase]: 3944/7170 cut-off events. [2025-02-08 01:13:58,819 INFO L125 PetriNetUnfolderBase]: For 114706/114706 co-relation queries the response was YES. [2025-02-08 01:13:58,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51215 conditions, 7170 events. 3944/7170 cut-off events. For 114706/114706 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 51091 event pairs, 1153 based on Foata normal form. 6/7168 useless extension candidates. Maximal degree in co-relation 51084. Up to 3149 conditions per place. [2025-02-08 01:13:58,893 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 479 selfloop transitions, 216 changer transitions 19/715 dead transitions. [2025-02-08 01:13:58,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 715 transitions, 13800 flow [2025-02-08 01:13:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:13:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:13:58,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 164 transitions. [2025-02-08 01:13:58,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3215686274509804 [2025-02-08 01:13:58,894 INFO L175 Difference]: Start difference. First operand has 391 places, 617 transitions, 11266 flow. Second operand 17 states and 164 transitions. [2025-02-08 01:13:58,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 715 transitions, 13800 flow [2025-02-08 01:13:59,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 715 transitions, 13583 flow, removed 66 selfloop flow, removed 9 redundant places. [2025-02-08 01:13:59,798 INFO L231 Difference]: Finished difference. Result has 399 places, 611 transitions, 11611 flow [2025-02-08 01:13:59,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=10982, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=11611, PETRI_PLACES=399, PETRI_TRANSITIONS=611} [2025-02-08 01:13:59,798 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 370 predicate places. [2025-02-08 01:13:59,798 INFO L471 AbstractCegarLoop]: Abstraction has has 399 places, 611 transitions, 11611 flow [2025-02-08 01:13:59,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.0) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:13:59,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:13:59,799 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:13:59,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 01:13:59,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-08 01:13:59,999 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:14:00,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash -447103030, now seen corresponding path program 17 times [2025-02-08 01:14:00,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:00,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976034409] [2025-02-08 01:14:00,000 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:00,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:00,005 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:00,012 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:00,013 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:14:00,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:14:00,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:00,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976034409] [2025-02-08 01:14:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976034409] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:00,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305115003] [2025-02-08 01:14:00,143 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:00,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:00,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:00,145 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:00,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 01:14:00,196 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:00,214 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:00,214 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:14:00,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:00,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 01:14:00,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:00,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 59 [2025-02-08 01:14:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:00,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:00,343 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:14:00,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-02-08 01:14:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305115003] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:00,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2025-02-08 01:14:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036535036] [2025-02-08 01:14:00,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:00,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-08 01:14:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:00,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-08 01:14:00,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-02-08 01:14:00,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:14:00,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 611 transitions, 11611 flow. Second operand has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:00,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:00,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:14:00,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:02,017 INFO L124 PetriNetUnfolderBase]: 3901/7071 cut-off events. [2025-02-08 01:14:02,017 INFO L125 PetriNetUnfolderBase]: For 127316/127316 co-relation queries the response was YES. [2025-02-08 01:14:02,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52109 conditions, 7071 events. 3901/7071 cut-off events. For 127316/127316 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 49936 event pairs, 1838 based on Foata normal form. 3/7066 useless extension candidates. Maximal degree in co-relation 51978. Up to 5178 conditions per place. [2025-02-08 01:14:02,104 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 529 selfloop transitions, 115 changer transitions 12/657 dead transitions. [2025-02-08 01:14:02,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 657 transitions, 13336 flow [2025-02-08 01:14:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:14:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 01:14:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2025-02-08 01:14:02,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33589743589743587 [2025-02-08 01:14:02,105 INFO L175 Difference]: Start difference. First operand has 399 places, 611 transitions, 11611 flow. Second operand 13 states and 131 transitions. [2025-02-08 01:14:02,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 657 transitions, 13336 flow [2025-02-08 01:14:03,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 657 transitions, 13143 flow, removed 21 selfloop flow, removed 13 redundant places. [2025-02-08 01:14:03,089 INFO L231 Difference]: Finished difference. Result has 391 places, 605 transitions, 11557 flow [2025-02-08 01:14:03,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=11372, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11557, PETRI_PLACES=391, PETRI_TRANSITIONS=605} [2025-02-08 01:14:03,090 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 362 predicate places. [2025-02-08 01:14:03,090 INFO L471 AbstractCegarLoop]: Abstraction has has 391 places, 605 transitions, 11557 flow [2025-02-08 01:14:03,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 15 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:03,090 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:03,090 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:03,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 01:14:03,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-08 01:14:03,291 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:14:03,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2004967740, now seen corresponding path program 18 times [2025-02-08 01:14:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:03,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100558369] [2025-02-08 01:14:03,292 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:03,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:03,297 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:03,305 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:03,306 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:14:03,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:03,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100558369] [2025-02-08 01:14:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100558369] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918714122] [2025-02-08 01:14:03,490 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:03,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:03,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:03,493 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:03,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 01:14:03,552 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:03,574 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:03,575 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:14:03,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:03,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 01:14:03,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:03,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 59 [2025-02-08 01:14:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:03,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:03,759 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:14:03,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 46 [2025-02-08 01:14:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918714122] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:03,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:03,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 16 [2025-02-08 01:14:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39034073] [2025-02-08 01:14:03,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:03,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:14:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:03,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:14:03,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:14:03,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:14:03,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 605 transitions, 11557 flow. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:03,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:03,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:14:03,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:05,480 INFO L124 PetriNetUnfolderBase]: 3962/7207 cut-off events. [2025-02-08 01:14:05,480 INFO L125 PetriNetUnfolderBase]: For 131332/131332 co-relation queries the response was YES. [2025-02-08 01:14:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52391 conditions, 7207 events. 3962/7207 cut-off events. For 131332/131332 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 51231 event pairs, 1960 based on Foata normal form. 50/7249 useless extension candidates. Maximal degree in co-relation 52266. Up to 5526 conditions per place. [2025-02-08 01:14:05,548 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 519 selfloop transitions, 138 changer transitions 29/687 dead transitions. [2025-02-08 01:14:05,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 687 transitions, 13910 flow [2025-02-08 01:14:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:14:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 01:14:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2025-02-08 01:14:05,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35128205128205126 [2025-02-08 01:14:05,549 INFO L175 Difference]: Start difference. First operand has 391 places, 605 transitions, 11557 flow. Second operand 13 states and 137 transitions. [2025-02-08 01:14:05,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 687 transitions, 13910 flow [2025-02-08 01:14:06,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 687 transitions, 13804 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:14:06,542 INFO L231 Difference]: Finished difference. Result has 396 places, 607 transitions, 11980 flow [2025-02-08 01:14:06,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=11457, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11980, PETRI_PLACES=396, PETRI_TRANSITIONS=607} [2025-02-08 01:14:06,543 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 367 predicate places. [2025-02-08 01:14:06,543 INFO L471 AbstractCegarLoop]: Abstraction has has 396 places, 607 transitions, 11980 flow [2025-02-08 01:14:06,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:06,543 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:06,543 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:06,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 01:14:06,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-02-08 01:14:06,743 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:14:06,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash 261293144, now seen corresponding path program 19 times [2025-02-08 01:14:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:06,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208026073] [2025-02-08 01:14:06,744 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:14:06,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:06,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:14:06,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:06,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:06,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:06,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:06,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208026073] [2025-02-08 01:14:06,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208026073] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:06,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300659968] [2025-02-08 01:14:06,923 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:14:06,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:06,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:06,925 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:06,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 01:14:06,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:14:06,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:06,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:06,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:06,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 01:14:06,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:07,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 59 [2025-02-08 01:14:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:07,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:07,172 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:14:07,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 19 [2025-02-08 01:14:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:07,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300659968] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:07,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:07,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 20 [2025-02-08 01:14:07,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945096073] [2025-02-08 01:14:07,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:07,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 01:14:07,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:07,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 01:14:07,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2025-02-08 01:14:07,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:14:07,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 607 transitions, 11980 flow. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:07,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:07,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:14:07,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:09,291 INFO L124 PetriNetUnfolderBase]: 4140/7534 cut-off events. [2025-02-08 01:14:09,291 INFO L125 PetriNetUnfolderBase]: For 147559/147559 co-relation queries the response was YES. [2025-02-08 01:14:09,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55693 conditions, 7534 events. 4140/7534 cut-off events. For 147559/147559 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 54215 event pairs, 1497 based on Foata normal form. 58/7584 useless extension candidates. Maximal degree in co-relation 55563. Up to 4420 conditions per place. [2025-02-08 01:14:09,377 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 502 selfloop transitions, 202 changer transitions 56/761 dead transitions. [2025-02-08 01:14:09,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 761 transitions, 15387 flow [2025-02-08 01:14:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 01:14:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-08 01:14:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 214 transitions. [2025-02-08 01:14:09,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37543859649122807 [2025-02-08 01:14:09,380 INFO L175 Difference]: Start difference. First operand has 396 places, 607 transitions, 11980 flow. Second operand 19 states and 214 transitions. [2025-02-08 01:14:09,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 761 transitions, 15387 flow [2025-02-08 01:14:10,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 761 transitions, 15265 flow, removed 24 selfloop flow, removed 9 redundant places. [2025-02-08 01:14:10,455 INFO L231 Difference]: Finished difference. Result has 408 places, 617 transitions, 12640 flow [2025-02-08 01:14:10,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=11842, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12640, PETRI_PLACES=408, PETRI_TRANSITIONS=617} [2025-02-08 01:14:10,456 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 379 predicate places. [2025-02-08 01:14:10,456 INFO L471 AbstractCegarLoop]: Abstraction has has 408 places, 617 transitions, 12640 flow [2025-02-08 01:14:10,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 20 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:10,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:10,456 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:10,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 01:14:10,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-08 01:14:10,657 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:14:10,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:10,657 INFO L85 PathProgramCache]: Analyzing trace with hash 201073684, now seen corresponding path program 20 times [2025-02-08 01:14:10,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:10,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395342487] [2025-02-08 01:14:10,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:10,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:10,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:14:10,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:10,670 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:10,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395342487] [2025-02-08 01:14:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395342487] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666237912] [2025-02-08 01:14:10,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:10,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:10,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:10,858 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:10,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 01:14:10,913 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:14:10,929 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:10,929 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:10,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:10,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 01:14:10,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:11,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 59 [2025-02-08 01:14:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:11,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:11,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:14:11,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 27 [2025-02-08 01:14:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666237912] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:11,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:11,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2025-02-08 01:14:11,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399081323] [2025-02-08 01:14:11,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:11,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:14:11,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:11,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:14:11,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:14:11,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:14:11,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 617 transitions, 12640 flow. Second operand has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:11,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:11,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:14:11,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:12,960 INFO L124 PetriNetUnfolderBase]: 3994/7276 cut-off events. [2025-02-08 01:14:12,960 INFO L125 PetriNetUnfolderBase]: For 152979/152979 co-relation queries the response was YES. [2025-02-08 01:14:13,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55236 conditions, 7276 events. 3994/7276 cut-off events. For 152979/152979 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 51882 event pairs, 1237 based on Foata normal form. 4/7272 useless extension candidates. Maximal degree in co-relation 55104. Up to 3215 conditions per place. [2025-02-08 01:14:13,029 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 486 selfloop transitions, 217 changer transitions 18/722 dead transitions. [2025-02-08 01:14:13,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 722 transitions, 15251 flow [2025-02-08 01:14:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:14:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:14:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 167 transitions. [2025-02-08 01:14:13,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32745098039215687 [2025-02-08 01:14:13,030 INFO L175 Difference]: Start difference. First operand has 408 places, 617 transitions, 12640 flow. Second operand 17 states and 167 transitions. [2025-02-08 01:14:13,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 722 transitions, 15251 flow [2025-02-08 01:14:14,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 722 transitions, 14910 flow, removed 64 selfloop flow, removed 14 redundant places. [2025-02-08 01:14:14,103 INFO L231 Difference]: Finished difference. Result has 404 places, 612 transitions, 12628 flow [2025-02-08 01:14:14,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=12218, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12628, PETRI_PLACES=404, PETRI_TRANSITIONS=612} [2025-02-08 01:14:14,103 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 375 predicate places. [2025-02-08 01:14:14,103 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 612 transitions, 12628 flow [2025-02-08 01:14:14,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:14,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:14,104 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:14,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-08 01:14:14,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-08 01:14:14,304 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:14:14,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:14,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1013102116, now seen corresponding path program 21 times [2025-02-08 01:14:14,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:14,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623885717] [2025-02-08 01:14:14,305 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:14,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:14,309 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:14,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 29 statements. [2025-02-08 01:14:14,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:14,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623885717] [2025-02-08 01:14:14,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623885717] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:14,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011369564] [2025-02-08 01:14:14,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:14,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:14,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:14,539 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:14,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 01:14:14,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:14,621 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 28 of 29 statements. [2025-02-08 01:14:14,621 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:14:14,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:14,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:14:14,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:14,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 72 [2025-02-08 01:14:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:15,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:15,084 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:14:15,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 32 [2025-02-08 01:14:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:15,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011369564] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:15,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:15,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2025-02-08 01:14:15,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700882787] [2025-02-08 01:14:15,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:15,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:14:15,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:15,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:14:15,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:14:15,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:14:15,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 612 transitions, 12628 flow. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:15,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:15,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:14:15,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:17,053 INFO L124 PetriNetUnfolderBase]: 3974/7234 cut-off events. [2025-02-08 01:14:17,053 INFO L125 PetriNetUnfolderBase]: For 153481/153481 co-relation queries the response was YES. [2025-02-08 01:14:17,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55504 conditions, 7234 events. 3974/7234 cut-off events. For 153481/153481 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 51342 event pairs, 930 based on Foata normal form. 8/7234 useless extension candidates. Maximal degree in co-relation 55374. Up to 2846 conditions per place. [2025-02-08 01:14:17,131 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 370 selfloop transitions, 335 changer transitions 41/747 dead transitions. [2025-02-08 01:14:17,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 747 transitions, 15810 flow [2025-02-08 01:14:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 01:14:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-08 01:14:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 223 transitions. [2025-02-08 01:14:17,132 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3378787878787879 [2025-02-08 01:14:17,132 INFO L175 Difference]: Start difference. First operand has 404 places, 612 transitions, 12628 flow. Second operand 22 states and 223 transitions. [2025-02-08 01:14:17,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 747 transitions, 15810 flow [2025-02-08 01:14:18,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 747 transitions, 15114 flow, removed 34 selfloop flow, removed 11 redundant places. [2025-02-08 01:14:18,287 INFO L231 Difference]: Finished difference. Result has 415 places, 620 transitions, 13181 flow [2025-02-08 01:14:18,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=11886, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=13181, PETRI_PLACES=415, PETRI_TRANSITIONS=620} [2025-02-08 01:14:18,288 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 386 predicate places. [2025-02-08 01:14:18,288 INFO L471 AbstractCegarLoop]: Abstraction has has 415 places, 620 transitions, 13181 flow [2025-02-08 01:14:18,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:18,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:18,288 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:18,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-08 01:14:18,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-08 01:14:18,489 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:14:18,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:18,490 INFO L85 PathProgramCache]: Analyzing trace with hash -586941270, now seen corresponding path program 22 times [2025-02-08 01:14:18,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:18,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697018637] [2025-02-08 01:14:18,490 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:18,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:18,495 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:14:18,501 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:18,501 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:14:18,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697018637] [2025-02-08 01:14:18,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697018637] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082479909] [2025-02-08 01:14:18,717 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:18,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:18,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:18,719 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:18,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 01:14:18,774 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-08 01:14:18,791 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:18,792 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:14:18,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:18,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:14:18,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:18,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:19,052 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:14:19,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 19 [2025-02-08 01:14:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082479909] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:19,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2025-02-08 01:14:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813908928] [2025-02-08 01:14:19,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:19,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 01:14:19,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:19,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 01:14:19,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2025-02-08 01:14:19,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:14:19,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 620 transitions, 13181 flow. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:19,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:19,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:14:19,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:21,527 INFO L124 PetriNetUnfolderBase]: 4124/7580 cut-off events. [2025-02-08 01:14:21,527 INFO L125 PetriNetUnfolderBase]: For 157484/157484 co-relation queries the response was YES. [2025-02-08 01:14:21,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59002 conditions, 7580 events. 4124/7580 cut-off events. For 157484/157484 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 54340 event pairs, 321 based on Foata normal form. 34/7606 useless extension candidates. Maximal degree in co-relation 58870. Up to 1482 conditions per place. [2025-02-08 01:14:21,597 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 404 selfloop transitions, 425 changer transitions 34/864 dead transitions. [2025-02-08 01:14:21,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 864 transitions, 18557 flow [2025-02-08 01:14:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 01:14:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 01:14:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 294 transitions. [2025-02-08 01:14:21,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.296969696969697 [2025-02-08 01:14:21,598 INFO L175 Difference]: Start difference. First operand has 415 places, 620 transitions, 13181 flow. Second operand 33 states and 294 transitions. [2025-02-08 01:14:21,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 864 transitions, 18557 flow [2025-02-08 01:14:22,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 864 transitions, 18283 flow, removed 42 selfloop flow, removed 12 redundant places. [2025-02-08 01:14:22,660 INFO L231 Difference]: Finished difference. Result has 438 places, 686 transitions, 15657 flow [2025-02-08 01:14:22,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=12976, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15657, PETRI_PLACES=438, PETRI_TRANSITIONS=686} [2025-02-08 01:14:22,661 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 409 predicate places. [2025-02-08 01:14:22,661 INFO L471 AbstractCegarLoop]: Abstraction has has 438 places, 686 transitions, 15657 flow [2025-02-08 01:14:22,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:22,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:22,661 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:14:22,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-08 01:14:22,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-08 01:14:22,862 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-08 01:14:22,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1204800922, now seen corresponding path program 23 times [2025-02-08 01:14:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:22,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475413787] [2025-02-08 01:14:22,863 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:22,868 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:22,876 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:22,876 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:14:22,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:23,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:23,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475413787] [2025-02-08 01:14:23,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475413787] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:23,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965682756] [2025-02-08 01:14:23,020 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:23,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:23,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:23,022 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:23,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 01:14:23,081 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 29 statements into 3 equivalence classes. [2025-02-08 01:14:23,104 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:14:23,104 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:14:23,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:23,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 01:14:23,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:23,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 37 [2025-02-08 01:14:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:23,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:23,470 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 01:14:23,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 46 [2025-02-08 01:14:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-08 01:14:23,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965682756] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:23,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:23,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2025-02-08 01:14:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698554222] [2025-02-08 01:14:23,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:23,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 01:14:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:23,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 01:14:23,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2025-02-08 01:14:23,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 30 [2025-02-08 01:14:23,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 686 transitions, 15657 flow. Second operand has 20 states, 20 states have (on average 5.85) internal successors, (117), 20 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:23,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:23,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 30 [2025-02-08 01:14:23,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:25,467 INFO L124 PetriNetUnfolderBase]: 4064/7444 cut-off events. [2025-02-08 01:14:25,467 INFO L125 PetriNetUnfolderBase]: For 163731/163731 co-relation queries the response was YES. [2025-02-08 01:14:25,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60164 conditions, 7444 events. 4064/7444 cut-off events. For 163731/163731 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52921 event pairs, 1816 based on Foata normal form. 2/7442 useless extension candidates. Maximal degree in co-relation 60028. Up to 4823 conditions per place. [2025-02-08 01:14:25,546 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 597 selfloop transitions, 120 changer transitions 10/728 dead transitions. [2025-02-08 01:14:25,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 728 transitions, 17564 flow [2025-02-08 01:14:25,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 01:14:25,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 01:14:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2025-02-08 01:14:25,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28055555555555556 [2025-02-08 01:14:25,547 INFO L175 Difference]: Start difference. First operand has 438 places, 686 transitions, 15657 flow. Second operand 12 states and 101 transitions. [2025-02-08 01:14:25,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 728 transitions, 17564 flow