./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/parallel-barrier.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 14:25:00,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 14:25:00,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 14:25:00,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 14:25:00,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 14:25:00,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 14:25:00,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 14:25:00,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 14:25:00,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 14:25:00,838 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 14:25:00,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 14:25:00,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 14:25:00,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 14:25:00,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 14:25:00,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 14:25:00,839 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 14:25:00,841 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 14:25:00,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 14:25:00,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 14:25:00,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:25:00,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 14:25:00,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 14:25:00,842 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/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 -> b78dfc9c2705d92d2bcea2c224e1a0e17a9d3d516f404185e5eda6bc0d05a15c [2025-03-17 14:25:01,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 14:25:01,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 14:25:01,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 14:25:01,058 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 14:25:01,059 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 14:25:01,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-03-17 14:25:02,221 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e05c9cb1/d054da3e59b6451aaacc7b6d9a7d211b/FLAGa3ebc7463 [2025-03-17 14:25:02,477 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 14:25:02,478 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-03-17 14:25:02,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e05c9cb1/d054da3e59b6451aaacc7b6d9a7d211b/FLAGa3ebc7463 [2025-03-17 14:25:02,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e05c9cb1/d054da3e59b6451aaacc7b6d9a7d211b [2025-03-17 14:25:02,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 14:25:02,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 14:25:02,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 14:25:02,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 14:25:02,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 14:25:02,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404ba0d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02, skipping insertion in model container [2025-03-17 14:25:02,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 14:25:02,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:25:02,652 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 14:25:02,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 14:25:02,689 INFO L204 MainTranslator]: Completed translation [2025-03-17 14:25:02,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02 WrapperNode [2025-03-17 14:25:02,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 14:25:02,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 14:25:02,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 14:25:02,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 14:25:02,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,720 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 212 [2025-03-17 14:25:02,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 14:25:02,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 14:25:02,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 14:25:02,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 14:25:02,727 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,737 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]. [2025-03-17 14:25:02,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,740 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,742 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 14:25:02,744 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 14:25:02,744 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 14:25:02,744 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 14:25:02,745 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (1/1) ... [2025-03-17 14:25:02,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 14:25:02,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 14:25:02,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 14:25:02,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 14:25:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 14:25:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 14:25:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 14:25:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 14:25:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-17 14:25:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-03-17 14:25:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-03-17 14:25:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 14:25:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 14:25:02,797 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 14:25:02,863 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 14:25:02,865 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 14:25:03,090 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 14:25:03,090 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 14:25:03,238 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 14:25:03,238 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 14:25:03,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:25:03 BoogieIcfgContainer [2025-03-17 14:25:03,239 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 14:25:03,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 14:25:03,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 14:25:03,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 14:25:03,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:25:02" (1/3) ... [2025-03-17 14:25:03,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ab8c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:25:03, skipping insertion in model container [2025-03-17 14:25:03,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:25:02" (2/3) ... [2025-03-17 14:25:03,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79ab8c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:25:03, skipping insertion in model container [2025-03-17 14:25:03,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:25:03" (3/3) ... [2025-03-17 14:25:03,247 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2025-03-17 14:25:03,258 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 14:25:03,261 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-barrier.wvr.c that has 7 procedures, 75 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-17 14:25:03,261 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 14:25:03,338 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-03-17 14:25:03,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 84 transitions, 234 flow [2025-03-17 14:25:03,422 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-03-17 14:25:03,424 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 14:25:03,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 72 events. 4/72 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 68. Up to 3 conditions per place. [2025-03-17 14:25:03,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 84 transitions, 234 flow [2025-03-17 14:25:03,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 71 transitions, 190 flow [2025-03-17 14:25:03,437 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 14:25:03,445 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;@71fd9732, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 14:25:03,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-17 14:25:03,474 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 14:25:03,474 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2025-03-17 14:25:03,474 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 14:25:03,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:03,475 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:03,475 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-17 14:25:03,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 610143681, now seen corresponding path program 1 times [2025-03-17 14:25:03,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:03,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568872182] [2025-03-17 14:25:03,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 14:25:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:03,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 14:25:03,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 14:25:03,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 14:25:03,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:03,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:03,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568872182] [2025-03-17 14:25:03,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568872182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:03,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:03,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:25:03,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993344296] [2025-03-17 14:25:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:03,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:25:03,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:03,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:25:03,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:25:03,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-17 14:25:03,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-03-17 14:25:03,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:03,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-17 14:25:03,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:09,020 INFO L124 PetriNetUnfolderBase]: 90013/113964 cut-off events. [2025-03-17 14:25:09,020 INFO L125 PetriNetUnfolderBase]: For 7469/7469 co-relation queries the response was YES. [2025-03-17 14:25:09,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239389 conditions, 113964 events. 90013/113964 cut-off events. For 7469/7469 co-relation queries the response was YES. Maximal size of possible extension queue 1737. Compared 564419 event pairs, 53048 based on Foata normal form. 1985/113165 useless extension candidates. Maximal degree in co-relation 238400. Up to 76768 conditions per place. [2025-03-17 14:25:09,629 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 93 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2025-03-17 14:25:09,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 459 flow [2025-03-17 14:25:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:25:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:25:09,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2025-03-17 14:25:09,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2025-03-17 14:25:09,637 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 190 flow. Second operand 3 states and 123 transitions. [2025-03-17 14:25:09,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 459 flow [2025-03-17 14:25:10,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 413 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-03-17 14:25:10,292 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2025-03-17 14:25:10,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2025-03-17 14:25:10,297 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -11 predicate places. [2025-03-17 14:25:10,298 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2025-03-17 14:25:10,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-03-17 14:25:10,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:10,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:10,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 14:25:10,299 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-17 14:25:10,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2085569973, now seen corresponding path program 2 times [2025-03-17 14:25:10,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:10,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165025051] [2025-03-17 14:25:10,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 14:25:10,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:10,316 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-03-17 14:25:10,327 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 14:25:10,328 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:25:10,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:10,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165025051] [2025-03-17 14:25:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165025051] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:10,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:10,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:25:10,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946539283] [2025-03-17 14:25:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:10,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:25:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:10,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:25:10,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:25:10,457 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-17 14:25:10,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-03-17 14:25:10,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:10,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-17 14:25:10,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:13,868 INFO L124 PetriNetUnfolderBase]: 68959/87699 cut-off events. [2025-03-17 14:25:13,868 INFO L125 PetriNetUnfolderBase]: For 4142/4142 co-relation queries the response was YES. [2025-03-17 14:25:13,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182286 conditions, 87699 events. 68959/87699 cut-off events. For 4142/4142 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 419833 event pairs, 40785 based on Foata normal form. 1544/87308 useless extension candidates. Maximal degree in co-relation 79534. Up to 59185 conditions per place. [2025-03-17 14:25:14,141 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 92 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2025-03-17 14:25:14,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 431 flow [2025-03-17 14:25:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:25:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:25:14,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2025-03-17 14:25:14,142 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-03-17 14:25:14,142 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 121 transitions. [2025-03-17 14:25:14,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 431 flow [2025-03-17 14:25:14,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:25:14,179 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2025-03-17 14:25:14,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2025-03-17 14:25:14,180 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2025-03-17 14:25:14,180 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2025-03-17 14:25:14,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-03-17 14:25:14,180 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:14,180 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:14,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 14:25:14,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-17 14:25:14,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2018193895, now seen corresponding path program 3 times [2025-03-17 14:25:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:14,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598179986] [2025-03-17 14:25:14,181 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 14:25:14,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:14,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 1 equivalence classes. [2025-03-17 14:25:14,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 14:25:14,210 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 14:25:14,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:15,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598179986] [2025-03-17 14:25:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598179986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-03-17 14:25:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326290994] [2025-03-17 14:25:15,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:15,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-17 14:25:15,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:15,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-17 14:25:15,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2025-03-17 14:25:15,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-17 14:25:15,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 174 flow. Second operand has 21 states, 21 states have (on average 11.047619047619047) internal successors, (232), 21 states have internal predecessors, (232), 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) [2025-03-17 14:25:15,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:15,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-17 14:25:15,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:22,369 INFO L124 PetriNetUnfolderBase]: 93797/119352 cut-off events. [2025-03-17 14:25:22,369 INFO L125 PetriNetUnfolderBase]: For 6830/6830 co-relation queries the response was YES. [2025-03-17 14:25:22,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252143 conditions, 119352 events. 93797/119352 cut-off events. For 6830/6830 co-relation queries the response was YES. Maximal size of possible extension queue 1516. Compared 587959 event pairs, 9219 based on Foata normal form. 2/116520 useless extension candidates. Maximal degree in co-relation 112217. Up to 69520 conditions per place. [2025-03-17 14:25:22,983 INFO L140 encePairwiseOnDemand]: 65/88 looper letters, 576 selfloop transitions, 191 changer transitions 58/826 dead transitions. [2025-03-17 14:25:22,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 826 transitions, 3603 flow [2025-03-17 14:25:22,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-03-17 14:25:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-03-17 14:25:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1315 transitions. [2025-03-17 14:25:22,989 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24497019374068554 [2025-03-17 14:25:22,989 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 61 states and 1315 transitions. [2025-03-17 14:25:22,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 826 transitions, 3603 flow [2025-03-17 14:25:23,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 826 transitions, 3555 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 14:25:23,143 INFO L231 Difference]: Finished difference. Result has 165 places, 263 transitions, 1235 flow [2025-03-17 14:25:23,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1235, PETRI_PLACES=165, PETRI_TRANSITIONS=263} [2025-03-17 14:25:23,144 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2025-03-17 14:25:23,144 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 263 transitions, 1235 flow [2025-03-17 14:25:23,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.047619047619047) internal successors, (232), 21 states have internal predecessors, (232), 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) [2025-03-17 14:25:23,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:23,144 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:23,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 14:25:23,144 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-17 14:25:23,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 635457661, now seen corresponding path program 4 times [2025-03-17 14:25:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:23,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199482904] [2025-03-17 14:25:23,145 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-17 14:25:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:23,155 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 65 statements into 2 equivalence classes. [2025-03-17 14:25:23,164 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 14:25:23,164 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-17 14:25:23,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:23,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:23,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199482904] [2025-03-17 14:25:23,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199482904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:23,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:23,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 14:25:23,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730949391] [2025-03-17 14:25:23,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:23,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 14:25:23,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:23,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 14:25:23,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 14:25:23,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-17 14:25:23,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 263 transitions, 1235 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-03-17 14:25:23,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:23,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-17 14:25:23,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 14:25:29,250 INFO L124 PetriNetUnfolderBase]: 75447/96421 cut-off events. [2025-03-17 14:25:29,251 INFO L125 PetriNetUnfolderBase]: For 265479/265479 co-relation queries the response was YES. [2025-03-17 14:25:29,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305693 conditions, 96421 events. 75447/96421 cut-off events. For 265479/265479 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 470888 event pairs, 33785 based on Foata normal form. 1422/95428 useless extension candidates. Maximal degree in co-relation 305652. Up to 61919 conditions per place. [2025-03-17 14:25:29,954 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 352 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2025-03-17 14:25:29,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 358 transitions, 2407 flow [2025-03-17 14:25:29,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 14:25:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 14:25:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2025-03-17 14:25:29,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2025-03-17 14:25:29,955 INFO L175 Difference]: Start difference. First operand has 165 places, 263 transitions, 1235 flow. Second operand 3 states and 123 transitions. [2025-03-17 14:25:29,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 358 transitions, 2407 flow [2025-03-17 14:25:30,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 358 transitions, 2391 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-17 14:25:30,650 INFO L231 Difference]: Finished difference. Result has 164 places, 262 transitions, 1244 flow [2025-03-17 14:25:30,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1244, PETRI_PLACES=164, PETRI_TRANSITIONS=262} [2025-03-17 14:25:30,651 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 78 predicate places. [2025-03-17 14:25:30,651 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 262 transitions, 1244 flow [2025-03-17 14:25:30,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2025-03-17 14:25:30,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 14:25:30,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 14:25:30,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 14:25:30,651 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-17 14:25:30,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 14:25:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1678373541, now seen corresponding path program 5 times [2025-03-17 14:25:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 14:25:30,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841111194] [2025-03-17 14:25:30,652 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-17 14:25:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 14:25:30,659 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-03-17 14:25:30,667 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 14:25:30,667 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 14:25:30,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 14:25:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 14:25:31,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 14:25:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841111194] [2025-03-17 14:25:31,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841111194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 14:25:31,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 14:25:31,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2025-03-17 14:25:31,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261286962] [2025-03-17 14:25:31,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 14:25:31,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-17 14:25:31,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 14:25:31,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-17 14:25:31,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2025-03-17 14:25:31,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-17 14:25:31,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 262 transitions, 1244 flow. Second operand has 22 states, 22 states have (on average 10.909090909090908) internal successors, (240), 22 states have internal predecessors, (240), 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) [2025-03-17 14:25:31,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 14:25:31,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-17 14:25:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand