./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:05:49,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:05:49,043 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:05:49,046 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:05:49,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:05:49,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:05:49,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:05:49,072 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:05:49,072 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:05:49,072 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:05:49,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:05:49,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:05:49,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:05:49,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:05:49,074 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:05:49,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:05:49,074 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:05:49,075 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:05:49,076 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:05:49,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:05:49,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:05:49,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:05:49,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:05:49,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:05:49,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:05:49,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:05:49,078 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2025-01-10 01:05:49,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:05:49,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:05:49,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:05:49,366 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:05:49,366 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:05:49,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2025-01-10 01:05:50,733 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/abef41040/f23f8f8f6381427eb6c43885b302de26/FLAGa3d393621 [2025-01-10 01:05:51,011 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:05:51,011 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2025-01-10 01:05:51,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/abef41040/f23f8f8f6381427eb6c43885b302de26/FLAGa3d393621 [2025-01-10 01:05:51,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/abef41040/f23f8f8f6381427eb6c43885b302de26 [2025-01-10 01:05:51,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:05:51,033 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:05:51,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:05:51,035 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:05:51,038 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:05:51,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fa8989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51, skipping insertion in model container [2025-01-10 01:05:51,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,056 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:05:51,209 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-10 01:05:51,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:05:51,220 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:05:51,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:05:51,260 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:05:51,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51 WrapperNode [2025-01-10 01:05:51,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:05:51,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:05:51,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:05:51,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:05:51,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,290 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 247 [2025-01-10 01:05:51,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:05:51,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:05:51,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:05:51,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:05:51,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,300 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,324 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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]. [2025-01-10 01:05:51,324 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,336 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,338 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:05:51,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:05:51,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:05:51,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:05:51,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (1/1) ... [2025-01-10 01:05:51,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:05:51,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:51,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 01:05:51,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:05:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:05:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:05:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 01:05:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 01:05:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-01-10 01:05:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-01-10 01:05:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:05:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 01:05:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 01:05:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 01:05:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 01:05:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:05:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:05:51,407 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:05:51,479 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:05:51,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:05:51,753 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:05:51,753 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:05:52,055 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:05:52,056 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-10 01:05:52,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:05:52 BoogieIcfgContainer [2025-01-10 01:05:52,057 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:05:52,060 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:05:52,060 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:05:52,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:05:52,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:05:51" (1/3) ... [2025-01-10 01:05:52,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52661a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:05:52, skipping insertion in model container [2025-01-10 01:05:52,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:05:51" (2/3) ... [2025-01-10 01:05:52,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52661a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:05:52, skipping insertion in model container [2025-01-10 01:05:52,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:05:52" (3/3) ... [2025-01-10 01:05:52,066 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2025-01-10 01:05:52,078 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:05:52,079 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-parallel-sum-equiv.wvr.c that has 5 procedures, 59 locations, 1 initial locations, 4 loop locations, and 10 error locations. [2025-01-10 01:05:52,080 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:05:52,149 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2025-01-10 01:05:52,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 180 flow [2025-01-10 01:05:52,209 INFO L124 PetriNetUnfolderBase]: 9/63 cut-off events. [2025-01-10 01:05:52,211 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-10 01:05:52,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 63 events. 9/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 142 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2025-01-10 01:05:52,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 70 transitions, 180 flow [2025-01-10 01:05:52,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 154 flow [2025-01-10 01:05:52,222 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:05:52,232 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=None, 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;@7fd3a7c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:05:52,234 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-01-10 01:05:52,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:05:52,237 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2025-01-10 01:05:52,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:05:52,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:52,238 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 01:05:52,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:05:52,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash 788936, now seen corresponding path program 1 times [2025-01-10 01:05:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807275930] [2025-01-10 01:05:52,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:05:52,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:52,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 01:05:52,333 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 01:05:52,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:52,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:52,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807275930] [2025-01-10 01:05:52,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807275930] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:05:52,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:05:52,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:05:52,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132390297] [2025-01-10 01:05:52,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:05:52,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:05:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:52,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:05:52,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:05:52,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2025-01-10 01:05:52,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:52,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:52,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2025-01-10 01:05:52,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:54,039 INFO L124 PetriNetUnfolderBase]: 14986/20198 cut-off events. [2025-01-10 01:05:54,039 INFO L125 PetriNetUnfolderBase]: For 974/974 co-relation queries the response was YES. [2025-01-10 01:05:54,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41822 conditions, 20198 events. 14986/20198 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 104079 event pairs, 13324 based on Foata normal form. 1/15693 useless extension candidates. Maximal degree in co-relation 41747. Up to 20169 conditions per place. [2025-01-10 01:05:54,171 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 49 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2025-01-10 01:05:54,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 244 flow [2025-01-10 01:05:54,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:05:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:05:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2025-01-10 01:05:54,181 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2025-01-10 01:05:54,182 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 154 flow. Second operand 3 states and 86 transitions. [2025-01-10 01:05:54,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 244 flow [2025-01-10 01:05:54,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-10 01:05:54,207 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 126 flow [2025-01-10 01:05:54,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2025-01-10 01:05:54,213 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2025-01-10 01:05:54,215 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 126 flow [2025-01-10 01:05:54,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:54,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:54,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 01:05:54,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:05:54,216 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:05:54,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 788937, now seen corresponding path program 1 times [2025-01-10 01:05:54,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321773734] [2025-01-10 01:05:54,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:05:54,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:54,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 01:05:54,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 01:05:54,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:54,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:54,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:54,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321773734] [2025-01-10 01:05:54,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321773734] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:05:54,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:05:54,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:05:54,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124491611] [2025-01-10 01:05:54,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:05:54,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:05:54,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:54,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:05:54,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:05:54,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2025-01-10 01:05:54,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:54,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:54,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2025-01-10 01:05:54,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:55,587 INFO L124 PetriNetUnfolderBase]: 14987/20201 cut-off events. [2025-01-10 01:05:55,587 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-01-10 01:05:55,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40858 conditions, 20201 events. 14987/20201 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 104137 event pairs, 13324 based on Foata normal form. 0/15695 useless extension candidates. Maximal degree in co-relation 40836. Up to 20174 conditions per place. [2025-01-10 01:05:55,794 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 51 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2025-01-10 01:05:55,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 244 flow [2025-01-10 01:05:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:05:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:05:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-01-10 01:05:55,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2025-01-10 01:05:55,797 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 126 flow. Second operand 4 states and 96 transitions. [2025-01-10 01:05:55,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 244 flow [2025-01-10 01:05:55,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:05:55,800 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 149 flow [2025-01-10 01:05:55,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2025-01-10 01:05:55,801 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2025-01-10 01:05:55,801 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 149 flow [2025-01-10 01:05:55,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:55,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:55,802 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2025-01-10 01:05:55,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:05:55,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:05:55,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash 758194360, now seen corresponding path program 1 times [2025-01-10 01:05:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:55,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946348371] [2025-01-10 01:05:55,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:05:55,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:55,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 01:05:55,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 01:05:55,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:55,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:56,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946348371] [2025-01-10 01:05:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946348371] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516471408] [2025-01-10 01:05:56,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:05:56,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:56,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:56,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:56,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 01:05:56,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-10 01:05:56,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-10 01:05:56,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:56,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:56,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-10 01:05:56,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:56,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-01-10 01:05:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:56,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:56,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516471408] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:56,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:56,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2025-01-10 01:05:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055261671] [2025-01-10 01:05:56,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:56,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:05:56,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:56,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:05:56,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:05:56,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2025-01-10 01:05:56,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 149 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:56,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:56,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2025-01-10 01:05:56,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:57,582 INFO L124 PetriNetUnfolderBase]: 14988/20203 cut-off events. [2025-01-10 01:05:57,582 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2025-01-10 01:05:57,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40874 conditions, 20203 events. 14988/20203 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 104106 event pairs, 13324 based on Foata normal form. 0/15696 useless extension candidates. Maximal degree in co-relation 40843. Up to 20171 conditions per place. [2025-01-10 01:05:57,655 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 47 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2025-01-10 01:05:57,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 271 flow [2025-01-10 01:05:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:05:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:05:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2025-01-10 01:05:57,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24131944444444445 [2025-01-10 01:05:57,658 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 149 flow. Second operand 8 states and 139 transitions. [2025-01-10 01:05:57,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 271 flow [2025-01-10 01:05:57,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:05:57,659 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 174 flow [2025-01-10 01:05:57,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2025-01-10 01:05:57,660 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2025-01-10 01:05:57,660 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 174 flow [2025-01-10 01:05:57,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:57,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:57,662 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:57,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 01:05:57,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:57,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:05:57,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:57,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1086818954, now seen corresponding path program 1 times [2025-01-10 01:05:57,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:57,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422337161] [2025-01-10 01:05:57,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:05:57,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:57,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:05:57,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:05:57,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:57,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:57,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:57,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422337161] [2025-01-10 01:05:57,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422337161] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:05:57,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:05:57,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:05:57,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512586099] [2025-01-10 01:05:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:05:57,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:05:57,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:57,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:05:57,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:05:57,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2025-01-10 01:05:57,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:57,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:57,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2025-01-10 01:05:57,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:58,653 INFO L124 PetriNetUnfolderBase]: 11188/15110 cut-off events. [2025-01-10 01:05:58,653 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2025-01-10 01:05:58,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30613 conditions, 15110 events. 11188/15110 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 74544 event pairs, 9814 based on Foata normal form. 0/12560 useless extension candidates. Maximal degree in co-relation 30575. Up to 15077 conditions per place. [2025-01-10 01:05:58,783 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 50 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2025-01-10 01:05:58,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 276 flow [2025-01-10 01:05:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:05:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:05:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-01-10 01:05:58,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3159722222222222 [2025-01-10 01:05:58,786 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 174 flow. Second operand 4 states and 91 transitions. [2025-01-10 01:05:58,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 276 flow [2025-01-10 01:05:58,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 234 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-01-10 01:05:58,790 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 134 flow [2025-01-10 01:05:58,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2025-01-10 01:05:58,791 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2025-01-10 01:05:58,791 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 134 flow [2025-01-10 01:05:58,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:58,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:58,791 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:58,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:05:58,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:05:58,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1086818955, now seen corresponding path program 1 times [2025-01-10 01:05:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470510448] [2025-01-10 01:05:58,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:05:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:58,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:05:58,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:05:58,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:58,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:58,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:58,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470510448] [2025-01-10 01:05:58,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470510448] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:05:58,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:05:58,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:05:58,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031969577] [2025-01-10 01:05:58,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:05:58,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:05:58,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:58,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:05:58,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:05:58,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:05:58,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:58,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:58,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:05:58,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:00,169 INFO L124 PetriNetUnfolderBase]: 19694/26750 cut-off events. [2025-01-10 01:06:00,170 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2025-01-10 01:06:00,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 26750 events. 19694/26750 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 147352 event pairs, 11285 based on Foata normal form. 391/22816 useless extension candidates. Maximal degree in co-relation 30487. Up to 15038 conditions per place. [2025-01-10 01:06:00,246 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 121 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2025-01-10 01:06:00,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 129 transitions, 543 flow [2025-01-10 01:06:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:06:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:06:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2025-01-10 01:06:00,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49722222222222223 [2025-01-10 01:06:00,248 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 134 flow. Second operand 5 states and 179 transitions. [2025-01-10 01:06:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 129 transitions, 543 flow [2025-01-10 01:06:00,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 129 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:06:00,251 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 148 flow [2025-01-10 01:06:00,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2025-01-10 01:06:00,252 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2025-01-10 01:06:00,254 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 148 flow [2025-01-10 01:06:00,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:00,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:00,254 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:00,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 01:06:00,254 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:00,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:00,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1532628745, now seen corresponding path program 1 times [2025-01-10 01:06:00,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:00,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764961864] [2025-01-10 01:06:00,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:00,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:00,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 01:06:00,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 01:06:00,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:00,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:06:00,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:00,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764961864] [2025-01-10 01:06:00,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764961864] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:00,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:00,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:06:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592377046] [2025-01-10 01:06:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:00,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:06:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:00,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:06:00,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:06:00,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:00,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:00,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:00,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:00,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:01,012 INFO L124 PetriNetUnfolderBase]: 14906/20425 cut-off events. [2025-01-10 01:06:01,012 INFO L125 PetriNetUnfolderBase]: For 1503/1503 co-relation queries the response was YES. [2025-01-10 01:06:01,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42939 conditions, 20425 events. 14906/20425 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 108602 event pairs, 11441 based on Foata normal form. 432/17570 useless extension candidates. Maximal degree in co-relation 31748. Up to 15082 conditions per place. [2025-01-10 01:06:01,112 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 90 selfloop transitions, 4 changer transitions 4/102 dead transitions. [2025-01-10 01:06:01,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 445 flow [2025-01-10 01:06:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:06:01,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:06:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2025-01-10 01:06:01,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2025-01-10 01:06:01,114 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 148 flow. Second operand 5 states and 154 transitions. [2025-01-10 01:06:01,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 445 flow [2025-01-10 01:06:01,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:06:01,122 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 166 flow [2025-01-10 01:06:01,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2025-01-10 01:06:01,123 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2025-01-10 01:06:01,123 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 166 flow [2025-01-10 01:06:01,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:01,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:01,123 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:01,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 01:06:01,123 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:01,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1159108796, now seen corresponding path program 1 times [2025-01-10 01:06:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842728002] [2025-01-10 01:06:01,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:01,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 01:06:01,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 01:06:01,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:01,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842728002] [2025-01-10 01:06:01,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842728002] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:01,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443998910] [2025-01-10 01:06:01,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:01,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:01,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:01,254 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:06:01,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 01:06:01,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 01:06:01,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 01:06:01,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:01,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:01,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:06:01,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:06:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:01,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:06:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:01,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443998910] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:06:01,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:06:01,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 01:06:01,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713589210] [2025-01-10 01:06:01,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:06:01,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:06:01,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:01,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:06:01,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:06:01,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:01,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 166 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:01,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:01,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:01,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:02,691 INFO L124 PetriNetUnfolderBase]: 23412/32029 cut-off events. [2025-01-10 01:06:02,692 INFO L125 PetriNetUnfolderBase]: For 3097/3097 co-relation queries the response was YES. [2025-01-10 01:06:02,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69768 conditions, 32029 events. 23412/32029 cut-off events. For 3097/3097 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 184660 event pairs, 9882 based on Foata normal form. 391/27350 useless extension candidates. Maximal degree in co-relation 58577. Up to 13384 conditions per place. [2025-01-10 01:06:02,875 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 148 selfloop transitions, 10 changer transitions 0/162 dead transitions. [2025-01-10 01:06:02,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 162 transitions, 746 flow [2025-01-10 01:06:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:06:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:06:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2025-01-10 01:06:02,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4253472222222222 [2025-01-10 01:06:02,881 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 166 flow. Second operand 8 states and 245 transitions. [2025-01-10 01:06:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 162 transitions, 746 flow [2025-01-10 01:06:02,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 162 transitions, 741 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:06:02,899 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 206 flow [2025-01-10 01:06:02,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2025-01-10 01:06:02,900 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2025-01-10 01:06:02,900 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 206 flow [2025-01-10 01:06:02,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:02,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:02,901 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:02,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 01:06:03,105 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 [2025-01-10 01:06:03,105 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:03,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash 708356326, now seen corresponding path program 1 times [2025-01-10 01:06:03,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:03,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636324725] [2025-01-10 01:06:03,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:03,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:06:03,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:06:03,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:03,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:03,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:03,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636324725] [2025-01-10 01:06:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636324725] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:03,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460084488] [2025-01-10 01:06:03,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:03,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:03,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:03,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:06:03,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-10 01:06:03,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:06:03,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:06:03,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:03,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:03,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:06:03,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:06:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:03,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:06:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:03,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460084488] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:06:03,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:06:03,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-10 01:06:03,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16692996] [2025-01-10 01:06:03,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:06:03,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-10 01:06:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:03,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-10 01:06:03,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:06:03,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:03,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 206 flow. Second operand has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:03,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:03,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:03,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:04,328 INFO L124 PetriNetUnfolderBase]: 18228/25344 cut-off events. [2025-01-10 01:06:04,329 INFO L125 PetriNetUnfolderBase]: For 6833/6833 co-relation queries the response was YES. [2025-01-10 01:06:04,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57483 conditions, 25344 events. 18228/25344 cut-off events. For 6833/6833 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 142544 event pairs, 9011 based on Foata normal form. 612/22104 useless extension candidates. Maximal degree in co-relation 39430. Up to 10410 conditions per place. [2025-01-10 01:06:04,462 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 111 selfloop transitions, 11 changer transitions 4/130 dead transitions. [2025-01-10 01:06:04,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 640 flow [2025-01-10 01:06:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:06:04,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:06:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2025-01-10 01:06:04,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2025-01-10 01:06:04,464 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 206 flow. Second operand 8 states and 219 transitions. [2025-01-10 01:06:04,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 640 flow [2025-01-10 01:06:04,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 618 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-01-10 01:06:04,475 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 257 flow [2025-01-10 01:06:04,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2025-01-10 01:06:04,478 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2025-01-10 01:06:04,478 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 257 flow [2025-01-10 01:06:04,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:04,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:04,478 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:04,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 01:06:04,679 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 [2025-01-10 01:06:04,679 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:04,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1910169261, now seen corresponding path program 2 times [2025-01-10 01:06:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:04,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470765510] [2025-01-10 01:06:04,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:06:04,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:04,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-10 01:06:04,698 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:06:04,698 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:06:04,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 01:06:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470765510] [2025-01-10 01:06:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470765510] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709391262] [2025-01-10 01:06:04,852 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:06:04,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:04,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:04,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:06:04,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 01:06:04,904 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-10 01:06:04,918 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 01:06:04,918 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:06:04,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:04,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 01:06:04,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:06:05,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:05,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:06:05,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-01-10 01:06:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:05,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709391262] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:06:05,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:06:05,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 14 [2025-01-10 01:06:05,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97852360] [2025-01-10 01:06:05,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:06:05,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 01:06:05,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:05,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 01:06:05,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:06:05,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:05,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 257 flow. Second operand has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:05,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:05,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:05,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:06,870 INFO L124 PetriNetUnfolderBase]: 23855/32858 cut-off events. [2025-01-10 01:06:06,870 INFO L125 PetriNetUnfolderBase]: For 12127/12127 co-relation queries the response was YES. [2025-01-10 01:06:06,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79585 conditions, 32858 events. 23855/32858 cut-off events. For 12127/12127 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 190720 event pairs, 2789 based on Foata normal form. 0/28222 useless extension candidates. Maximal degree in co-relation 57803. Up to 10900 conditions per place. [2025-01-10 01:06:07,061 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 174 selfloop transitions, 10 changer transitions 5/193 dead transitions. [2025-01-10 01:06:07,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 193 transitions, 1028 flow [2025-01-10 01:06:07,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 01:06:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 01:06:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2025-01-10 01:06:07,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2025-01-10 01:06:07,064 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 257 flow. Second operand 10 states and 292 transitions. [2025-01-10 01:06:07,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 193 transitions, 1028 flow [2025-01-10 01:06:07,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 193 transitions, 988 flow, removed 15 selfloop flow, removed 4 redundant places. [2025-01-10 01:06:07,101 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 262 flow [2025-01-10 01:06:07,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=262, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2025-01-10 01:06:07,102 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2025-01-10 01:06:07,102 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 262 flow [2025-01-10 01:06:07,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:07,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:07,102 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:07,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 01:06:07,306 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 [2025-01-10 01:06:07,306 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:07,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:07,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1778573035, now seen corresponding path program 2 times [2025-01-10 01:06:07,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:07,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672122318] [2025-01-10 01:06:07,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:06:07,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:07,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-10 01:06:07,344 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 01:06:07,344 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:06:07,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 01:06:07,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672122318] [2025-01-10 01:06:07,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672122318] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:07,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784900470] [2025-01-10 01:06:07,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:06:07,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:07,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:07,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:06:07,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-10 01:06:07,579 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-10 01:06:07,592 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 01:06:07,592 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:06:07,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:07,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-10 01:06:07,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:06:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:07,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:06:07,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-01-10 01:06:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784900470] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:06:07,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:06:07,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 14 [2025-01-10 01:06:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188249044] [2025-01-10 01:06:07,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:06:07,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 01:06:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:07,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 01:06:07,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:06:07,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:07,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 262 flow. Second operand has 16 states, 16 states have (on average 13.5625) internal successors, (217), 16 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:07,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:07,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:09,824 INFO L124 PetriNetUnfolderBase]: 28342/39055 cut-off events. [2025-01-10 01:06:09,826 INFO L125 PetriNetUnfolderBase]: For 16687/16687 co-relation queries the response was YES. [2025-01-10 01:06:09,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93416 conditions, 39055 events. 28342/39055 cut-off events. For 16687/16687 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 221457 event pairs, 7449 based on Foata normal form. 0/34217 useless extension candidates. Maximal degree in co-relation 71175. Up to 18002 conditions per place. [2025-01-10 01:06:10,017 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 135 selfloop transitions, 11 changer transitions 4/154 dead transitions. [2025-01-10 01:06:10,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 154 transitions, 829 flow [2025-01-10 01:06:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 01:06:10,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 01:06:10,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2025-01-10 01:06:10,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3527777777777778 [2025-01-10 01:06:10,020 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 262 flow. Second operand 10 states and 254 transitions. [2025-01-10 01:06:10,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 154 transitions, 829 flow [2025-01-10 01:06:10,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 154 transitions, 796 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-01-10 01:06:10,039 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 270 flow [2025-01-10 01:06:10,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=270, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2025-01-10 01:06:10,039 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2025-01-10 01:06:10,039 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 270 flow [2025-01-10 01:06:10,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.5625) internal successors, (217), 16 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:10,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:10,040 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:10,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-10 01:06:10,240 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,SelfDestructingSolverStorable9 [2025-01-10 01:06:10,240 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:10,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1651010537, now seen corresponding path program 1 times [2025-01-10 01:06:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:10,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066759318] [2025-01-10 01:06:10,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:10,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:10,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-01-10 01:06:10,256 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-01-10 01:06:10,256 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:10,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:10,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066759318] [2025-01-10 01:06:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066759318] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:10,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:10,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:06:10,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286248519] [2025-01-10 01:06:10,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:10,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:06:10,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:10,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:06:10,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:06:10,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:10,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:10,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:10,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:10,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:12,983 INFO L124 PetriNetUnfolderBase]: 40242/55420 cut-off events. [2025-01-10 01:06:12,984 INFO L125 PetriNetUnfolderBase]: For 21249/21249 co-relation queries the response was YES. [2025-01-10 01:06:13,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131480 conditions, 55420 events. 40242/55420 cut-off events. For 21249/21249 co-relation queries the response was YES. Maximal size of possible extension queue 1353. Compared 335484 event pairs, 16041 based on Foata normal form. 3/48456 useless extension candidates. Maximal degree in co-relation 92738. Up to 22060 conditions per place. [2025-01-10 01:06:13,215 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 130 selfloop transitions, 8 changer transitions 4/146 dead transitions. [2025-01-10 01:06:13,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 841 flow [2025-01-10 01:06:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:06:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:06:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2025-01-10 01:06:13,216 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2025-01-10 01:06:13,216 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 270 flow. Second operand 4 states and 161 transitions. [2025-01-10 01:06:13,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 841 flow [2025-01-10 01:06:13,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 804 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-01-10 01:06:13,239 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 301 flow [2025-01-10 01:06:13,239 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2025-01-10 01:06:13,241 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 21 predicate places. [2025-01-10 01:06:13,241 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 301 flow [2025-01-10 01:06:13,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:13,241 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:13,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:13,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-10 01:06:13,241 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:13,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:13,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2003351377, now seen corresponding path program 2 times [2025-01-10 01:06:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:13,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467799720] [2025-01-10 01:06:13,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:06:13,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:13,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-10 01:06:13,250 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 35 of 36 statements. [2025-01-10 01:06:13,250 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 01:06:13,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:06:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467799720] [2025-01-10 01:06:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467799720] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:13,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:13,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 01:06:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768893415] [2025-01-10 01:06:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:13,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:06:13,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:13,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:06:13,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:06:13,314 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:13,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:13,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:13,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:13,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:15,894 INFO L124 PetriNetUnfolderBase]: 37395/51188 cut-off events. [2025-01-10 01:06:15,894 INFO L125 PetriNetUnfolderBase]: For 28277/28280 co-relation queries the response was YES. [2025-01-10 01:06:16,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128230 conditions, 51188 events. 37395/51188 cut-off events. For 28277/28280 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 300244 event pairs, 11147 based on Foata normal form. 3/45117 useless extension candidates. Maximal degree in co-relation 106195. Up to 20318 conditions per place. [2025-01-10 01:06:16,139 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 125 selfloop transitions, 10 changer transitions 11/150 dead transitions. [2025-01-10 01:06:16,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 150 transitions, 885 flow [2025-01-10 01:06:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:06:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:06:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2025-01-10 01:06:16,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-01-10 01:06:16,141 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 301 flow. Second operand 4 states and 160 transitions. [2025-01-10 01:06:16,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 150 transitions, 885 flow [2025-01-10 01:06:16,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 150 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:06:16,163 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 310 flow [2025-01-10 01:06:16,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2025-01-10 01:06:16,164 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2025-01-10 01:06:16,164 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 310 flow [2025-01-10 01:06:16,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:16,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:16,165 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:16,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-10 01:06:16,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:16,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:16,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1263019757, now seen corresponding path program 1 times [2025-01-10 01:06:16,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:16,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622711113] [2025-01-10 01:06:16,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:16,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:16,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 01:06:16,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 01:06:16,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:16,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 01:06:16,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:16,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622711113] [2025-01-10 01:06:16,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622711113] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:16,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994254809] [2025-01-10 01:06:16,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:16,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:16,320 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:06:16,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-10 01:06:16,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 01:06:16,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 01:06:16,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:16,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:16,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:06:16,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:06:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 01:06:16,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:06:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 01:06:16,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994254809] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:16,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:06:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-01-10 01:06:16,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370232899] [2025-01-10 01:06:16,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:16,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:06:16,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:16,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:06:16,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:06:16,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:16,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:16,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:16,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:18,362 INFO L124 PetriNetUnfolderBase]: 23295/31573 cut-off events. [2025-01-10 01:06:18,363 INFO L125 PetriNetUnfolderBase]: For 28142/28151 co-relation queries the response was YES. [2025-01-10 01:06:18,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86535 conditions, 31573 events. 23295/31573 cut-off events. For 28142/28151 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 171071 event pairs, 11753 based on Foata normal form. 830/28845 useless extension candidates. Maximal degree in co-relation 86518. Up to 24880 conditions per place. [2025-01-10 01:06:18,734 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 81 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2025-01-10 01:06:18,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 92 transitions, 566 flow [2025-01-10 01:06:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:06:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:06:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2025-01-10 01:06:18,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2025-01-10 01:06:18,736 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 310 flow. Second operand 6 states and 138 transitions. [2025-01-10 01:06:18,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 92 transitions, 566 flow [2025-01-10 01:06:18,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 527 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-01-10 01:06:18,820 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 298 flow [2025-01-10 01:06:18,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2025-01-10 01:06:18,821 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2025-01-10 01:06:18,821 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 298 flow [2025-01-10 01:06:18,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:18,821 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:18,822 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:18,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 01:06:19,022 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,SelfDestructingSolverStorable12 [2025-01-10 01:06:19,022 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:19,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1609384247, now seen corresponding path program 1 times [2025-01-10 01:06:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:19,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299217098] [2025-01-10 01:06:19,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:19,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 01:06:19,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 01:06:19,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:19,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 01:06:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:19,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299217098] [2025-01-10 01:06:19,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299217098] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:19,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:19,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:06:19,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055093284] [2025-01-10 01:06:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:19,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:06:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:19,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:06:19,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:06:19,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:19,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:19,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:19,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:19,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:21,291 INFO L124 PetriNetUnfolderBase]: 27479/37175 cut-off events. [2025-01-10 01:06:21,292 INFO L125 PetriNetUnfolderBase]: For 24108/24117 co-relation queries the response was YES. [2025-01-10 01:06:21,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99802 conditions, 37175 events. 27479/37175 cut-off events. For 24108/24117 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 204089 event pairs, 4340 based on Foata normal form. 361/33245 useless extension candidates. Maximal degree in co-relation 99786. Up to 24748 conditions per place. [2025-01-10 01:06:21,474 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 125 selfloop transitions, 7 changer transitions 1/137 dead transitions. [2025-01-10 01:06:21,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 137 transitions, 797 flow [2025-01-10 01:06:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 01:06:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 01:06:21,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2025-01-10 01:06:21,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45 [2025-01-10 01:06:21,475 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 298 flow. Second operand 5 states and 162 transitions. [2025-01-10 01:06:21,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 137 transitions, 797 flow [2025-01-10 01:06:21,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 137 transitions, 775 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-01-10 01:06:21,565 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 335 flow [2025-01-10 01:06:21,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2025-01-10 01:06:21,565 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 17 predicate places. [2025-01-10 01:06:21,565 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 335 flow [2025-01-10 01:06:21,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:21,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:21,566 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:21,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-10 01:06:21,566 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:21,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 431936503, now seen corresponding path program 2 times [2025-01-10 01:06:21,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:21,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975286191] [2025-01-10 01:06:21,566 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:06:21,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:21,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-01-10 01:06:21,580 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 39 of 44 statements. [2025-01-10 01:06:21,580 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 01:06:21,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 01:06:21,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:21,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975286191] [2025-01-10 01:06:21,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975286191] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:21,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:21,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 01:06:21,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997471399] [2025-01-10 01:06:21,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:21,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-10 01:06:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:21,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 01:06:21,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 01:06:21,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:21,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 335 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:21,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:21,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:21,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:24,346 INFO L124 PetriNetUnfolderBase]: 35756/48554 cut-off events. [2025-01-10 01:06:24,346 INFO L125 PetriNetUnfolderBase]: For 37394/37403 co-relation queries the response was YES. [2025-01-10 01:06:24,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129428 conditions, 48554 events. 35756/48554 cut-off events. For 37394/37403 co-relation queries the response was YES. Maximal size of possible extension queue 1354. Compared 279780 event pairs, 7149 based on Foata normal form. 194/43167 useless extension candidates. Maximal degree in co-relation 129410. Up to 18330 conditions per place. [2025-01-10 01:06:24,633 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 164 selfloop transitions, 16 changer transitions 6/190 dead transitions. [2025-01-10 01:06:24,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 190 transitions, 1194 flow [2025-01-10 01:06:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:06:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:06:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2025-01-10 01:06:24,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2025-01-10 01:06:24,635 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 335 flow. Second operand 6 states and 204 transitions. [2025-01-10 01:06:24,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 190 transitions, 1194 flow [2025-01-10 01:06:24,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 190 transitions, 1186 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:06:24,667 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 496 flow [2025-01-10 01:06:24,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=496, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2025-01-10 01:06:24,668 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2025-01-10 01:06:24,668 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 496 flow [2025-01-10 01:06:24,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:24,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:24,669 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:24,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 01:06:24,669 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:24,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash -327579617, now seen corresponding path program 1 times [2025-01-10 01:06:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:24,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983460245] [2025-01-10 01:06:24,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:24,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:24,676 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 01:06:24,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 01:06:24,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:24,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:24,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983460245] [2025-01-10 01:06:24,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983460245] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:24,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198332294] [2025-01-10 01:06:24,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:24,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:24,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:24,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:06:24,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-10 01:06:24,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-10 01:06:24,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-10 01:06:24,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:24,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:24,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:06:24,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:06:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:24,920 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:06:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:24,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198332294] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:24,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:06:24,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-01-10 01:06:24,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687189937] [2025-01-10 01:06:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:24,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:06:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:24,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:06:24,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:06:24,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:24,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2025-01-10 01:06:24,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:24,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:24,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:27,415 INFO L124 PetriNetUnfolderBase]: 30800/41767 cut-off events. [2025-01-10 01:06:27,416 INFO L125 PetriNetUnfolderBase]: For 64227/64227 co-relation queries the response was YES. [2025-01-10 01:06:27,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119788 conditions, 41767 events. 30800/41767 cut-off events. For 64227/64227 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 232688 event pairs, 17479 based on Foata normal form. 890/37632 useless extension candidates. Maximal degree in co-relation 119767. Up to 23031 conditions per place. [2025-01-10 01:06:27,641 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 100 selfloop transitions, 14 changer transitions 1/119 dead transitions. [2025-01-10 01:06:27,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 119 transitions, 868 flow [2025-01-10 01:06:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:06:27,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:06:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2025-01-10 01:06:27,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2025-01-10 01:06:27,642 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 496 flow. Second operand 6 states and 147 transitions. [2025-01-10 01:06:27,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 119 transitions, 868 flow [2025-01-10 01:06:27,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 119 transitions, 847 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-01-10 01:06:27,732 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 494 flow [2025-01-10 01:06:27,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2025-01-10 01:06:27,732 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2025-01-10 01:06:27,733 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 494 flow [2025-01-10 01:06:27,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 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) [2025-01-10 01:06:27,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:27,733 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:27,739 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 [2025-01-10 01:06:27,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:27,934 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:27,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:27,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2115159418, now seen corresponding path program 1 times [2025-01-10 01:06:27,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:27,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433932995] [2025-01-10 01:06:27,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:27,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-10 01:06:27,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-10 01:06:27,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:27,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:06:28,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433932995] [2025-01-10 01:06:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433932995] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:06:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272752017] [2025-01-10 01:06:28,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:06:28,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:06:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:06:28,634 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:06:28,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-10 01:06:28,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-01-10 01:06:28,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-01-10 01:06:28,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:06:28,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:28,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-10 01:06:28,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:06:28,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2025-01-10 01:06:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 01:06:28,860 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:06:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272752017] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:28,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:06:28,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2025-01-10 01:06:28,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803244448] [2025-01-10 01:06:28,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:28,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 01:06:28,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:28,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 01:06:28,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:06:28,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:28,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 494 flow. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 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) [2025-01-10 01:06:28,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:28,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:28,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:06:33,564 INFO L124 PetriNetUnfolderBase]: 50086/67976 cut-off events. [2025-01-10 01:06:33,564 INFO L125 PetriNetUnfolderBase]: For 90064/90064 co-relation queries the response was YES. [2025-01-10 01:06:33,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193858 conditions, 67976 events. 50086/67976 cut-off events. For 90064/90064 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 402986 event pairs, 16227 based on Foata normal form. 1/59938 useless extension candidates. Maximal degree in co-relation 193837. Up to 19970 conditions per place. [2025-01-10 01:06:34,174 INFO L140 encePairwiseOnDemand]: 63/72 looper letters, 279 selfloop transitions, 33 changer transitions 3/319 dead transitions. [2025-01-10 01:06:34,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 319 transitions, 2082 flow [2025-01-10 01:06:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-10 01:06:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-10 01:06:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 375 transitions. [2025-01-10 01:06:34,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-01-10 01:06:34,176 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 494 flow. Second operand 10 states and 375 transitions. [2025-01-10 01:06:34,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 319 transitions, 2082 flow [2025-01-10 01:06:34,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 319 transitions, 1990 flow, removed 25 selfloop flow, removed 6 redundant places. [2025-01-10 01:06:34,491 INFO L231 Difference]: Finished difference. Result has 100 places, 96 transitions, 676 flow [2025-01-10 01:06:34,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=676, PETRI_PLACES=100, PETRI_TRANSITIONS=96} [2025-01-10 01:06:34,491 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, 34 predicate places. [2025-01-10 01:06:34,491 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 96 transitions, 676 flow [2025-01-10 01:06:34,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 8 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) [2025-01-10 01:06:34,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:06:34,492 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:06:34,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 01:06:34,692 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,SelfDestructingSolverStorable16 [2025-01-10 01:06:34,693 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2025-01-10 01:06:34,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:06:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1424934436, now seen corresponding path program 2 times [2025-01-10 01:06:34,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:06:34,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294064302] [2025-01-10 01:06:34,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:06:34,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:06:34,700 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-01-10 01:06:34,705 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 43 of 48 statements. [2025-01-10 01:06:34,706 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 01:06:34,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:06:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-10 01:06:34,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:06:34,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294064302] [2025-01-10 01:06:34,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294064302] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:06:34,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:06:34,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-10 01:06:34,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351218049] [2025-01-10 01:06:34,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:06:34,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 01:06:34,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:06:34,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 01:06:34,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:06:34,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2025-01-10 01:06:34,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 96 transitions, 676 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:06:34,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:06:34,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2025-01-10 01:06:34,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand