./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --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/pthread-ext/28_buggy_simple_loop1_vf.i -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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:39:57,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:39:57,822 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:39:57,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:39:57,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:39:57,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:39:57,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:39:57,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:39:57,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:39:57,860 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:39:57,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:39:57,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:39:57,861 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:39:57,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:39:57,862 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:39:57,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:39:57,863 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:39:57,863 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:39:57,863 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:39:57,864 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:39:57,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:39:57,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:39:57,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:39:57,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:39:57,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:39:57,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:39:57,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:39:57,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:39:57,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:39:57,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:39:57,865 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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2025-01-10 00:39:58,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:39:58,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:39:58,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:39:58,157 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:39:58,157 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:39:58,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-01-10 00:39:59,458 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3279dd1a/e364e0a92b4e49709c843ffd201af051/FLAG5124772c8 [2025-01-10 00:39:59,726 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:39:59,727 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-01-10 00:39:59,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3279dd1a/e364e0a92b4e49709c843ffd201af051/FLAG5124772c8 [2025-01-10 00:39:59,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3279dd1a/e364e0a92b4e49709c843ffd201af051 [2025-01-10 00:39:59,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:39:59,758 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:39:59,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:39:59,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:39:59,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:39:59,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:39:59" (1/1) ... [2025-01-10 00:39:59,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ba495a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:39:59, skipping insertion in model container [2025-01-10 00:39:59,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:39:59" (1/1) ... [2025-01-10 00:39:59,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:40:00,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:40:00,046 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:40:00,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:40:00,112 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:40:00,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00 WrapperNode [2025-01-10 00:40:00,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:40:00,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:40:00,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:40:00,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:40:00,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,150 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2025-01-10 00:40:00,151 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:40:00,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:40:00,152 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:40:00,152 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:40:00,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,176 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 00:40:00,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,185 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,191 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:40:00,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:40:00,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:40:00,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:40:00,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (1/1) ... [2025-01-10 00:40:00,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:40:00,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:00,224 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 00:40:00,230 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 00:40:00,249 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-10 00:40:00,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-10 00:40:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:40:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:40:00,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:40:00,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:40:00,251 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 00:40:00,346 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:40:00,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:40:00,468 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:40:00,468 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:40:00,530 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:40:00,530 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-10 00:40:00,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:40:00 BoogieIcfgContainer [2025-01-10 00:40:00,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:40:00,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:40:00,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:40:00,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:40:00,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:39:59" (1/3) ... [2025-01-10 00:40:00,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b70ab55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:40:00, skipping insertion in model container [2025-01-10 00:40:00,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:00" (2/3) ... [2025-01-10 00:40:00,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b70ab55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:40:00, skipping insertion in model container [2025-01-10 00:40:00,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:40:00" (3/3) ... [2025-01-10 00:40:00,539 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-01-10 00:40:00,551 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:40:00,552 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 20 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-01-10 00:40:00,552 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:40:00,623 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:40:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2025-01-10 00:40:00,682 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2025-01-10 00:40:00,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:00,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-01-10 00:40:00,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2025-01-10 00:40:00,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2025-01-10 00:40:00,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:40:00,714 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;@59df5229, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:40:00,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 00:40:00,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:40:00,723 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:40:00,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:00,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:00,724 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:40:00,725 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:40:00,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash 185224, now seen corresponding path program 1 times [2025-01-10 00:40:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:40:00,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397107487] [2025-01-10 00:40:00,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:40:00,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:40:00,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:40:00,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:00,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:40:00,867 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 00:40:00,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:40:00,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397107487] [2025-01-10 00:40:00,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397107487] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:40:00,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:40:00,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:40:00,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276355269] [2025-01-10 00:40:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:40:00,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:40:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:40:00,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:40:00,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:40:00,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 26 [2025-01-10 00:40:00,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 00:40:00,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:40:00,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 26 [2025-01-10 00:40:00,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:40:00,954 INFO L124 PetriNetUnfolderBase]: 18/55 cut-off events. [2025-01-10 00:40:00,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:00,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 55 events. 18/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 8 based on Foata normal form. 6/55 useless extension candidates. Maximal degree in co-relation 80. Up to 35 conditions per place. [2025-01-10 00:40:00,957 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 11 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2025-01-10 00:40:00,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 66 flow [2025-01-10 00:40:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:40:00,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:40:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2025-01-10 00:40:00,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2025-01-10 00:40:00,970 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 34 transitions. [2025-01-10 00:40:00,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 66 flow [2025-01-10 00:40:00,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:40:00,977 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2025-01-10 00:40:00,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=20} [2025-01-10 00:40:00,983 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2025-01-10 00:40:00,984 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2025-01-10 00:40:00,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 00:40:00,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:00,985 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 00:40:00,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:40:00,986 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:40:00,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:00,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1224987684, now seen corresponding path program 1 times [2025-01-10 00:40:00,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:40:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994076313] [2025-01-10 00:40:00,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:40:01,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:40:01,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:40:01,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:01,015 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:40:01,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:40:01,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:40:01,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:01,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:40:01,059 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:40:01,061 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-01-10 00:40:01,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-01-10 00:40:01,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2025-01-10 00:40:01,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2025-01-10 00:40:01,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 00:40:01,064 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 00:40:01,066 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:40:01,066 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 00:40:01,112 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:40:01,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2025-01-10 00:40:01,132 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2025-01-10 00:40:01,133 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 00:40:01,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 12/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2025-01-10 00:40:01,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2025-01-10 00:40:01,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2025-01-10 00:40:01,136 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:40:01,136 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;@59df5229, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:40:01,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 00:40:01,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:40:01,139 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:40:01,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:01,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:01,139 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:40:01,139 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 00:40:01,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash 229909, now seen corresponding path program 1 times [2025-01-10 00:40:01,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:40:01,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506583178] [2025-01-10 00:40:01,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:40:01,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:40:01,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:40:01,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:40:01,168 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 00:40:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:40:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506583178] [2025-01-10 00:40:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506583178] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:40:01,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:40:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:40:01,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191062723] [2025-01-10 00:40:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:40:01,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:40:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:40:01,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:40:01,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:40:01,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2025-01-10 00:40:01,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 00:40:01,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:40:01,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2025-01-10 00:40:01,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:40:01,344 INFO L124 PetriNetUnfolderBase]: 225/462 cut-off events. [2025-01-10 00:40:01,345 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-01-10 00:40:01,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 462 events. 225/462 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2221 event pairs, 108 based on Foata normal form. 62/468 useless extension candidates. Maximal degree in co-relation 307. Up to 300 conditions per place. [2025-01-10 00:40:01,352 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 19 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2025-01-10 00:40:01,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 120 flow [2025-01-10 00:40:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:40:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:40:01,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2025-01-10 00:40:01,354 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 00:40:01,354 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 60 transitions. [2025-01-10 00:40:01,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 120 flow [2025-01-10 00:40:01,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:40:01,356 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2025-01-10 00:40:01,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2025-01-10 00:40:01,358 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2025-01-10 00:40:01,358 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2025-01-10 00:40:01,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 00:40:01,358 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:01,359 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-01-10 00:40:01,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 00:40:01,359 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 00:40:01,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash 2067129217, now seen corresponding path program 1 times [2025-01-10 00:40:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:40:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444632862] [2025-01-10 00:40:01,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:01,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:40:01,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:01,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:01,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:01,379 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:40:01,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:01,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:01,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:01,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:40:01,394 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:40:01,394 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-01-10 00:40:01,394 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-01-10 00:40:01,395 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2025-01-10 00:40:01,395 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-01-10 00:40:01,395 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-01-10 00:40:01,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 00:40:01,395 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 00:40:01,396 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:40:01,396 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-10 00:40:01,450 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:40:01,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2025-01-10 00:40:01,466 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2025-01-10 00:40:01,466 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-10 00:40:01,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 18/78 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 218 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2025-01-10 00:40:01,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2025-01-10 00:40:01,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2025-01-10 00:40:01,470 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:40:01,472 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;@59df5229, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:40:01,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-10 00:40:01,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:40:01,473 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:40:01,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:01,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:01,474 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:40:01,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 00:40:01,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash 293461, now seen corresponding path program 1 times [2025-01-10 00:40:01,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:40:01,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365906027] [2025-01-10 00:40:01,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:01,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:40:01,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:40:01,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:40:01,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:40:01,496 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 00:40:01,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:40:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365906027] [2025-01-10 00:40:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365906027] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:40:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:40:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:40:01,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104849947] [2025-01-10 00:40:01,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:40:01,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:40:01,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:40:01,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:40:01,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:40:01,498 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2025-01-10 00:40:01,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:40:01,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:40:01,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2025-01-10 00:40:01,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:40:01,842 INFO L124 PetriNetUnfolderBase]: 1773/2997 cut-off events. [2025-01-10 00:40:01,842 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-01-10 00:40:01,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 2997 events. 1773/2997 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 17779 event pairs, 908 based on Foata normal form. 624/3242 useless extension candidates. Maximal degree in co-relation 784. Up to 2150 conditions per place. [2025-01-10 00:40:01,868 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 27 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2025-01-10 00:40:01,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 176 flow [2025-01-10 00:40:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:40:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:40:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 86 transitions. [2025-01-10 00:40:01,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.671875 [2025-01-10 00:40:01,872 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 86 transitions. [2025-01-10 00:40:01,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 176 flow [2025-01-10 00:40:01,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-01-10 00:40:01,874 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2025-01-10 00:40:01,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2025-01-10 00:40:01,875 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2025-01-10 00:40:01,876 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2025-01-10 00:40:01,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:40:01,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:01,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:40:01,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 00:40:01,877 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 00:40:01,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash 221779070, now seen corresponding path program 1 times [2025-01-10 00:40:01,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:40:01,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783886427] [2025-01-10 00:40:01,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:01,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:40:01,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:01,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:01,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:01,926 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:40:01,934 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:01,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:01,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:01,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:01,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:40:01,960 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:40:01,960 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-01-10 00:40:01,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-01-10 00:40:01,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2025-01-10 00:40:01,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-01-10 00:40:01,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-01-10 00:40:01,961 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-01-10 00:40:01,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 00:40:01,961 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 00:40:01,983 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2025-01-10 00:40:01,984 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 00:40:01,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:40:01 BasicIcfg [2025-01-10 00:40:01,990 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 00:40:01,990 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 00:40:01,990 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 00:40:01,991 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 00:40:01,991 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:40:00" (3/4) ... [2025-01-10 00:40:01,993 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 00:40:01,993 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 00:40:01,995 INFO L158 Benchmark]: Toolchain (without parser) took 2236.55ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 73.2MB in the end (delta: 59.4MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2025-01-10 00:40:01,996 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:40:01,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.66ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 113.4MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:40:01,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.77ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 111.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 00:40:01,997 INFO L158 Benchmark]: Boogie Preprocessor took 42.66ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:40:01,997 INFO L158 Benchmark]: RCFGBuilder took 334.66ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 93.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:40:01,998 INFO L158 Benchmark]: TraceAbstraction took 1456.07ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 74.1MB in the end (delta: 18.7MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2025-01-10 00:40:01,998 INFO L158 Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 167.8MB. Free memory was 74.1MB in the beginning and 73.2MB in the end (delta: 936.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 00:40:02,000 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.66ms. Allocated memory is still 167.8MB. Free memory was 132.5MB in the beginning and 113.4MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.77ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 111.6MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.66ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 334.66ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 93.2MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1456.07ms. Allocated memory is still 167.8MB. Free memory was 92.8MB in the beginning and 74.1MB in the end (delta: 18.7MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Witness Printer took 3.86ms. Allocated memory is still 167.8MB. Free memory was 74.1MB in the beginning and 73.2MB in the end (delta: 936.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=-1] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i 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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2025-01-10 00:40:04,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:40:04,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:40:04,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:40:04,715 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:40:04,715 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:40:04,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-01-10 00:40:06,066 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9665ec04/6e0d0b3b26f243e9bcf36f9f35a03e24/FLAG31f6e6dcc [2025-01-10 00:40:06,298 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:40:06,298 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2025-01-10 00:40:06,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9665ec04/6e0d0b3b26f243e9bcf36f9f35a03e24/FLAG31f6e6dcc [2025-01-10 00:40:06,630 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9665ec04/6e0d0b3b26f243e9bcf36f9f35a03e24 [2025-01-10 00:40:06,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:40:06,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:40:06,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:40:06,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:40:06,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:40:06,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:40:06" (1/1) ... [2025-01-10 00:40:06,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ace614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:06, skipping insertion in model container [2025-01-10 00:40:06,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:40:06" (1/1) ... [2025-01-10 00:40:06,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:40:06,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:40:06,929 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:40:06,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:40:07,031 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:40:07,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07 WrapperNode [2025-01-10 00:40:07,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:40:07,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:40:07,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:40:07,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:40:07,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,056 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,079 INFO L138 Inliner]: procedures = 167, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2025-01-10 00:40:07,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:40:07,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:40:07,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:40:07,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:40:07,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,099 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 00:40:07,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,104 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,110 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:40:07,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:40:07,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:40:07,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:40:07,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (1/1) ... [2025-01-10 00:40:07,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:40:07,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:07,151 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 00:40:07,155 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 00:40:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-10 00:40:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-10 00:40:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:40:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 00:40:07,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:40:07,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:40:07,178 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 00:40:07,273 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:40:07,275 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:40:07,412 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:40:07,412 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:40:07,482 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:40:07,483 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-10 00:40:07,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:40:07 BoogieIcfgContainer [2025-01-10 00:40:07,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:40:07,486 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:40:07,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:40:07,490 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:40:07,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:40:06" (1/3) ... [2025-01-10 00:40:07,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1497a8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:40:07, skipping insertion in model container [2025-01-10 00:40:07,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:40:07" (2/3) ... [2025-01-10 00:40:07,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1497a8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:40:07, skipping insertion in model container [2025-01-10 00:40:07,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:40:07" (3/3) ... [2025-01-10 00:40:07,493 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2025-01-10 00:40:07,505 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:40:07,507 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 20 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-01-10 00:40:07,507 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:40:07,565 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:40:07,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2025-01-10 00:40:07,625 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2025-01-10 00:40:07,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:07,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 55 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2025-01-10 00:40:07,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2025-01-10 00:40:07,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2025-01-10 00:40:07,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:40:07,651 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;@d9530aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:40:07,651 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 00:40:07,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:40:07,654 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:40:07,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:07,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:07,655 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:40:07,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:40:07,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash 187210, now seen corresponding path program 1 times [2025-01-10 00:40:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:40:07,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381262860] [2025-01-10 00:40:07,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:07,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:07,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:07,694 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 00:40:07,695 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 00:40:07,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:40:07,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:40:07,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:07,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:40:07,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 00:40:07,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:40:07,778 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 00:40:07,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:40:07,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:40:07,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381262860] [2025-01-10 00:40:07,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381262860] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:40:07,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:40:07,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:40:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610727406] [2025-01-10 00:40:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:40:07,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:40:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:40:07,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:40:07,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:40:07,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 26 [2025-01-10 00:40:07,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 00:40:07,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:40:07,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 26 [2025-01-10 00:40:07,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:40:07,852 INFO L124 PetriNetUnfolderBase]: 18/55 cut-off events. [2025-01-10 00:40:07,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:07,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 55 events. 18/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 8 based on Foata normal form. 6/55 useless extension candidates. Maximal degree in co-relation 80. Up to 35 conditions per place. [2025-01-10 00:40:07,854 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 11 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2025-01-10 00:40:07,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 66 flow [2025-01-10 00:40:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:40:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:40:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 34 transitions. [2025-01-10 00:40:07,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2025-01-10 00:40:07,867 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 34 transitions. [2025-01-10 00:40:07,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 66 flow [2025-01-10 00:40:07,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:40:07,873 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2025-01-10 00:40:07,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=20} [2025-01-10 00:40:07,878 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2025-01-10 00:40:07,878 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2025-01-10 00:40:07,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 00:40:07,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:07,879 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 00:40:07,888 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 00:40:08,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:08,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 00:40:08,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1284154596, now seen corresponding path program 1 times [2025-01-10 00:40:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:40:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445619456] [2025-01-10 00:40:08,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:08,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:08,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:08,086 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 00:40:08,087 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 00:40:08,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:40:08,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:40:08,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:08,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:08,137 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:40:08,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:40:08,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:40:08,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:08,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:08,166 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 00:40:08,167 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:40:08,169 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2025-01-10 00:40:08,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2025-01-10 00:40:08,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2025-01-10 00:40:08,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2025-01-10 00:40:08,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 00:40:08,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:08,373 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 00:40:08,376 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:40:08,376 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 00:40:08,409 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:40:08,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2025-01-10 00:40:08,426 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2025-01-10 00:40:08,426 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 00:40:08,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 12/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 138 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2025-01-10 00:40:08,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2025-01-10 00:40:08,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2025-01-10 00:40:08,429 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:40:08,431 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;@d9530aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:40:08,431 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 00:40:08,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:40:08,433 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:40:08,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:08,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:08,433 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:40:08,433 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 00:40:08,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash 231895, now seen corresponding path program 1 times [2025-01-10 00:40:08,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:40:08,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509927381] [2025-01-10 00:40:08,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:08,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:08,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:08,440 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 00:40:08,443 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 00:40:08,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:40:08,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:40:08,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:08,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:40:08,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 00:40:08,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:40:08,494 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 00:40:08,494 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:40:08,494 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:40:08,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509927381] [2025-01-10 00:40:08,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509927381] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:40:08,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:40:08,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:40:08,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713998549] [2025-01-10 00:40:08,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:40:08,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:40:08,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:40:08,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:40:08,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:40:08,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2025-01-10 00:40:08,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 00:40:08,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:40:08,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2025-01-10 00:40:08,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:40:08,621 INFO L124 PetriNetUnfolderBase]: 225/462 cut-off events. [2025-01-10 00:40:08,622 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2025-01-10 00:40:08,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 462 events. 225/462 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2221 event pairs, 108 based on Foata normal form. 62/468 useless extension candidates. Maximal degree in co-relation 307. Up to 300 conditions per place. [2025-01-10 00:40:08,627 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 19 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2025-01-10 00:40:08,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 120 flow [2025-01-10 00:40:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:40:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:40:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2025-01-10 00:40:08,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 00:40:08,630 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 60 transitions. [2025-01-10 00:40:08,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 120 flow [2025-01-10 00:40:08,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:40:08,632 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2025-01-10 00:40:08,633 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2025-01-10 00:40:08,634 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2025-01-10 00:40:08,634 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2025-01-10 00:40:08,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 00:40:08,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:08,635 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-01-10 00:40:08,643 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 00:40:08,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:08,836 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 00:40:08,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -522952061, now seen corresponding path program 1 times [2025-01-10 00:40:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:40:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992123722] [2025-01-10 00:40:08,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:08,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:08,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:08,839 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 00:40:08,842 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 00:40:08,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:08,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:08,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:08,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:08,893 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:40:08,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:08,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:08,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:08,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:08,917 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 00:40:08,917 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:40:08,918 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-01-10 00:40:08,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-01-10 00:40:08,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2025-01-10 00:40:08,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-01-10 00:40:08,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-01-10 00:40:08,926 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 00:40:09,118 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 [2025-01-10 00:40:09,119 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 00:40:09,119 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:40:09,120 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-10 00:40:09,169 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:40:09,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2025-01-10 00:40:09,179 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2025-01-10 00:40:09,179 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-10 00:40:09,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 18/78 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 218 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2025-01-10 00:40:09,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2025-01-10 00:40:09,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2025-01-10 00:40:09,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:40:09,182 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;@d9530aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:40:09,183 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-10 00:40:09,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:40:09,184 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:40:09,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:40:09,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:09,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:40:09,184 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 00:40:09,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash 295447, now seen corresponding path program 1 times [2025-01-10 00:40:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:40:09,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485608816] [2025-01-10 00:40:09,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:09,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:09,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:09,188 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 00:40:09,190 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 00:40:09,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:40:09,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:40:09,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:09,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:40:09,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-10 00:40:09,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 00:40:09,247 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 00:40:09,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 00:40:09,247 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 00:40:09,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485608816] [2025-01-10 00:40:09,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485608816] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:40:09,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:40:09,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:40:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435398220] [2025-01-10 00:40:09,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:40:09,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:40:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 00:40:09,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:40:09,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:40:09,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2025-01-10 00:40:09,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:40:09,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:40:09,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2025-01-10 00:40:09,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:40:09,601 INFO L124 PetriNetUnfolderBase]: 1773/2997 cut-off events. [2025-01-10 00:40:09,601 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2025-01-10 00:40:09,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 2997 events. 1773/2997 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 17779 event pairs, 908 based on Foata normal form. 624/3242 useless extension candidates. Maximal degree in co-relation 784. Up to 2150 conditions per place. [2025-01-10 00:40:09,654 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 27 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2025-01-10 00:40:09,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 176 flow [2025-01-10 00:40:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:40:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:40:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 86 transitions. [2025-01-10 00:40:09,656 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.671875 [2025-01-10 00:40:09,657 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 86 transitions. [2025-01-10 00:40:09,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 176 flow [2025-01-10 00:40:09,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-01-10 00:40:09,660 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2025-01-10 00:40:09,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2025-01-10 00:40:09,661 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2025-01-10 00:40:09,661 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2025-01-10 00:40:09,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:40:09,662 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:40:09,662 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:40:09,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 00:40:09,863 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 [2025-01-10 00:40:09,863 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 00:40:09,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:40:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1926665088, now seen corresponding path program 1 times [2025-01-10 00:40:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 00:40:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436185343] [2025-01-10 00:40:09,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:40:09,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 00:40:09,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:40:09,867 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 00:40:09,869 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 00:40:09,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:09,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:09,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:09,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:09,925 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:40:09,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:40:09,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:40:09,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:40:09,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:40:09,948 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 00:40:09,950 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:40:09,950 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-01-10 00:40:09,950 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-01-10 00:40:09,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2025-01-10 00:40:09,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-01-10 00:40:09,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-01-10 00:40:09,951 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-01-10 00:40:09,960 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 00:40:10,151 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 [2025-01-10 00:40:10,152 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 00:40:10,175 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2025-01-10 00:40:10,175 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 00:40:10,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:40:10 BasicIcfg [2025-01-10 00:40:10,184 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 00:40:10,184 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 00:40:10,184 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 00:40:10,185 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 00:40:10,186 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:40:07" (3/4) ... [2025-01-10 00:40:10,187 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 00:40:10,188 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 00:40:10,188 INFO L158 Benchmark]: Toolchain (without parser) took 3555.58ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 63.4MB in the end (delta: 26.3MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2025-01-10 00:40:10,189 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:40:10,189 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.50ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 69.7MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:40:10,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.33ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 68.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 00:40:10,189 INFO L158 Benchmark]: Boogie Preprocessor took 32.10ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 66.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:40:10,190 INFO L158 Benchmark]: RCFGBuilder took 370.36ms. Allocated memory is still 117.4MB. Free memory was 66.4MB in the beginning and 47.2MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 00:40:10,191 INFO L158 Benchmark]: TraceAbstraction took 2698.25ms. Allocated memory is still 117.4MB. Free memory was 46.6MB in the beginning and 63.4MB in the end (delta: -16.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:40:10,191 INFO L158 Benchmark]: Witness Printer took 3.43ms. Allocated memory is still 117.4MB. Free memory was 63.4MB in the beginning and 63.4MB in the end (delta: 12.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 00:40:10,193 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 83.9MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.50ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 69.7MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.33ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 68.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.10ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 66.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 370.36ms. Allocated memory is still 117.4MB. Free memory was 66.4MB in the beginning and 47.2MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2698.25ms. Allocated memory is still 117.4MB. Free memory was 46.6MB in the beginning and 63.4MB in the end (delta: -16.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.43ms. Allocated memory is still 117.4MB. Free memory was 63.4MB in the beginning and 63.4MB in the end (delta: 12.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=0] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i