./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 e2fb8bed 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-?-e2fb8be-m [2025-03-09 01:21:55,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 01:21:55,194 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-09 01:21:55,200 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 01:21:55,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 01:21:55,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 01:21:55,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 01:21:55,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 01:21:55,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 01:21:55,219 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 01:21:55,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 01:21:55,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 01:21:55,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 01:21:55,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-09 01:21:55,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 01:21:55,221 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 01:21:55,221 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 01:21:55,221 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 01:21:55,221 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:21:55,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 01:21:55,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 01:21:55,222 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 [2025-03-09 01:21:55,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 01:21:55,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 01:21:55,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 01:21:55,442 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 01:21:55,443 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 01:21:55,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-03-09 01:21:56,621 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93d63c10/dcfefe50fec8456da8767eb1456454cc/FLAG26698f2f4 [2025-03-09 01:21:56,833 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 01:21:56,833 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-barrier.wvr.c [2025-03-09 01:21:56,838 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93d63c10/dcfefe50fec8456da8767eb1456454cc/FLAG26698f2f4 [2025-03-09 01:21:57,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a93d63c10/dcfefe50fec8456da8767eb1456454cc [2025-03-09 01:21:57,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 01:21:57,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 01:21:57,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 01:21:57,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 01:21:57,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 01:21:57,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64441518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57, skipping insertion in model container [2025-03-09 01:21:57,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,215 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 01:21:57,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:21:57,357 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 01:21:57,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 01:21:57,395 INFO L204 MainTranslator]: Completed translation [2025-03-09 01:21:57,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57 WrapperNode [2025-03-09 01:21:57,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 01:21:57,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 01:21:57,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 01:21:57,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 01:21:57,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,426 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 212 [2025-03-09 01:21:57,426 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 01:21:57,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 01:21:57,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 01:21:57,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 01:21:57,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,443 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]. [2025-03-09 01:21:57,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,448 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,449 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,450 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 01:21:57,453 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 01:21:57,453 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 01:21:57,453 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 01:21:57,453 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (1/1) ... [2025-03-09 01:21:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 01:21:57,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 01:21:57,477 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) [2025-03-09 01:21:57,478 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 [2025-03-09 01:21:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 01:21:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 01:21:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 01:21:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 01:21:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 01:21:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 01:21:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 01:21:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 01:21:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 01:21:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 01:21:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-09 01:21:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-09 01:21:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-03-09 01:21:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-03-09 01:21:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 01:21:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 01:21:57,496 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 01:21:57,568 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 01:21:57,569 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 01:21:57,786 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 01:21:57,786 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 01:21:57,943 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 01:21:57,944 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 01:21:57,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:21:57 BoogieIcfgContainer [2025-03-09 01:21:57,944 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 01:21:57,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 01:21:57,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 01:21:57,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 01:21:57,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 01:21:57" (1/3) ... [2025-03-09 01:21:57,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:21:57, skipping insertion in model container [2025-03-09 01:21:57,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 01:21:57" (2/3) ... [2025-03-09 01:21:57,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e34428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 01:21:57, skipping insertion in model container [2025-03-09 01:21:57,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 01:21:57" (3/3) ... [2025-03-09 01:21:57,953 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2025-03-09 01:21:57,965 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 01:21:57,967 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. [2025-03-09 01:21:57,967 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 01:21:58,043 INFO L143 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2025-03-09 01:21:58,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 84 transitions, 234 flow [2025-03-09 01:21:58,117 INFO L124 PetriNetUnfolderBase]: 4/72 cut-off events. [2025-03-09 01:21:58,119 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 01:21:58,124 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. [2025-03-09 01:21:58,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 84 transitions, 234 flow [2025-03-09 01:21:58,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 71 transitions, 190 flow [2025-03-09 01:21:58,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 01:21:58,151 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;@5668a10e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 01:21:58,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-09 01:21:58,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 01:21:58,174 INFO L124 PetriNetUnfolderBase]: 4/68 cut-off events. [2025-03-09 01:21:58,174 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-09 01:21:58,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:21:58,175 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] [2025-03-09 01:21:58,175 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-09 01:21:58,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:21:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1204420640, now seen corresponding path program 1 times [2025-03-09 01:21:58,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:21:58,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257757509] [2025-03-09 01:21:58,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 01:21:58,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:21:58,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-09 01:21:58,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 01:21:58,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 01:21:58,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:21:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:21:58,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:21:58,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257757509] [2025-03-09 01:21:58,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257757509] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:21:58,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:21:58,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:21:58,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744024408] [2025-03-09 01:21:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:21:58,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:21:58,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:21:58,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:21:58,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:21:58,583 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-09 01:21:58,585 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) [2025-03-09 01:21:58,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:21:58,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-09 01:21:58,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:04,285 INFO L124 PetriNetUnfolderBase]: 90013/113964 cut-off events. [2025-03-09 01:22:04,285 INFO L125 PetriNetUnfolderBase]: For 7364/7364 co-relation queries the response was YES. [2025-03-09 01:22:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239389 conditions, 113964 events. 90013/113964 cut-off events. For 7364/7364 co-relation queries the response was YES. Maximal size of possible extension queue 1737. Compared 564300 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. [2025-03-09 01:22:04,816 INFO L140 encePairwiseOnDemand]: 82/88 looper letters, 93 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2025-03-09 01:22:04,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 98 transitions, 459 flow [2025-03-09 01:22:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:22:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:22:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2025-03-09 01:22:04,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2025-03-09 01:22:04,826 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 190 flow. Second operand 3 states and 123 transitions. [2025-03-09 01:22:04,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 98 transitions, 459 flow [2025-03-09 01:22:05,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 413 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-03-09 01:22:05,042 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 168 flow [2025-03-09 01:22:05,044 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} [2025-03-09 01:22:05,046 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -11 predicate places. [2025-03-09 01:22:05,047 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 168 flow [2025-03-09 01:22:05,047 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) [2025-03-09 01:22:05,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:05,047 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] [2025-03-09 01:22:05,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 01:22:05,048 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-09 01:22:05,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1793318442, now seen corresponding path program 2 times [2025-03-09 01:22:05,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:05,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840084517] [2025-03-09 01:22:05,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 01:22:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:05,064 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-03-09 01:22:05,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 01:22:05,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:22:05,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:05,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:05,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840084517] [2025-03-09 01:22:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840084517] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:05,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:05,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:22:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125950900] [2025-03-09 01:22:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:05,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:22:05,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:05,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:22:05,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:22:05,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-09 01:22:05,198 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) [2025-03-09 01:22:05,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:05,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-09 01:22:05,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:08,588 INFO L124 PetriNetUnfolderBase]: 68959/87699 cut-off events. [2025-03-09 01:22:08,588 INFO L125 PetriNetUnfolderBase]: For 4142/4142 co-relation queries the response was YES. [2025-03-09 01:22:08,690 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 1283. Compared 420137 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. [2025-03-09 01:22:08,886 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 92 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2025-03-09 01:22:08,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 431 flow [2025-03-09 01:22:08,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:22:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:22:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2025-03-09 01:22:08,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2025-03-09 01:22:08,888 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 168 flow. Second operand 3 states and 121 transitions. [2025-03-09 01:22:08,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 431 flow [2025-03-09 01:22:08,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 419 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:22:08,926 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 174 flow [2025-03-09 01:22:08,927 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} [2025-03-09 01:22:08,927 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2025-03-09 01:22:08,927 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 174 flow [2025-03-09 01:22:08,927 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) [2025-03-09 01:22:08,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:08,927 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] [2025-03-09 01:22:08,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 01:22:08,928 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-09 01:22:08,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash -695177722, now seen corresponding path program 3 times [2025-03-09 01:22:08,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:08,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703209355] [2025-03-09 01:22:08,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 01:22:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:08,940 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 65 statements into 1 equivalence classes. [2025-03-09 01:22:08,963 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 01:22:08,964 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 01:22:08,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703209355] [2025-03-09 01:22:09,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703209355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:09,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:09,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2025-03-09 01:22:09,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319116979] [2025-03-09 01:22:09,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:09,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-09 01:22:09,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:09,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-09 01:22:09,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2025-03-09 01:22:09,735 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-09 01:22:09,736 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) [2025-03-09 01:22:09,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:09,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-09 01:22:09,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:17,334 INFO L124 PetriNetUnfolderBase]: 93797/119352 cut-off events. [2025-03-09 01:22:17,335 INFO L125 PetriNetUnfolderBase]: For 6830/6830 co-relation queries the response was YES. [2025-03-09 01:22:17,498 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 1529. Compared 586749 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. [2025-03-09 01:22:17,794 INFO L140 encePairwiseOnDemand]: 65/88 looper letters, 576 selfloop transitions, 191 changer transitions 58/826 dead transitions. [2025-03-09 01:22:17,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 826 transitions, 3603 flow [2025-03-09 01:22:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-03-09 01:22:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-03-09 01:22:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1315 transitions. [2025-03-09 01:22:17,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.24497019374068554 [2025-03-09 01:22:17,803 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 174 flow. Second operand 61 states and 1315 transitions. [2025-03-09 01:22:17,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 826 transitions, 3603 flow [2025-03-09 01:22:17,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 826 transitions, 3555 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 01:22:17,957 INFO L231 Difference]: Finished difference. Result has 165 places, 263 transitions, 1235 flow [2025-03-09 01:22:17,958 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} [2025-03-09 01:22:17,958 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2025-03-09 01:22:17,958 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 263 transitions, 1235 flow [2025-03-09 01:22:17,959 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) [2025-03-09 01:22:17,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:17,959 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] [2025-03-09 01:22:17,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 01:22:17,959 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-09 01:22:17,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1440088590, now seen corresponding path program 4 times [2025-03-09 01:22:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110104722] [2025-03-09 01:22:17,960 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 01:22:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:17,975 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 65 statements into 2 equivalence classes. [2025-03-09 01:22:17,987 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 01:22:17,987 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 01:22:17,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:18,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110104722] [2025-03-09 01:22:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110104722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:18,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:18,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 01:22:18,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961087802] [2025-03-09 01:22:18,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:18,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 01:22:18,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:18,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 01:22:18,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 01:22:18,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-09 01:22:18,056 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) [2025-03-09 01:22:18,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:18,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-09 01:22:18,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 01:22:24,012 INFO L124 PetriNetUnfolderBase]: 75447/96421 cut-off events. [2025-03-09 01:22:24,012 INFO L125 PetriNetUnfolderBase]: For 262907/262907 co-relation queries the response was YES. [2025-03-09 01:22:24,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305693 conditions, 96421 events. 75447/96421 cut-off events. For 262907/262907 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 471011 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. [2025-03-09 01:22:24,951 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 352 selfloop transitions, 5 changer transitions 0/358 dead transitions. [2025-03-09 01:22:24,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 358 transitions, 2407 flow [2025-03-09 01:22:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 01:22:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 01:22:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2025-03-09 01:22:24,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2025-03-09 01:22:24,952 INFO L175 Difference]: Start difference. First operand has 165 places, 263 transitions, 1235 flow. Second operand 3 states and 123 transitions. [2025-03-09 01:22:24,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 358 transitions, 2407 flow [2025-03-09 01:22:25,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 358 transitions, 2391 flow, removed 7 selfloop flow, removed 2 redundant places. [2025-03-09 01:22:25,812 INFO L231 Difference]: Finished difference. Result has 164 places, 262 transitions, 1244 flow [2025-03-09 01:22:25,813 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} [2025-03-09 01:22:25,813 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 78 predicate places. [2025-03-09 01:22:25,813 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 262 transitions, 1244 flow [2025-03-09 01:22:25,813 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) [2025-03-09 01:22:25,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 01:22:25,813 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] [2025-03-09 01:22:25,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 01:22:25,814 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 9 more)] === [2025-03-09 01:22:25,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 01:22:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1410691908, now seen corresponding path program 5 times [2025-03-09 01:22:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 01:22:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376554154] [2025-03-09 01:22:25,814 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 01:22:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 01:22:25,823 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 65 statements into 1 equivalence classes. [2025-03-09 01:22:25,832 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-09 01:22:25,832 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 01:22:25,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 01:22:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 01:22:26,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 01:22:26,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376554154] [2025-03-09 01:22:26,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376554154] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 01:22:26,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 01:22:26,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2025-03-09 01:22:26,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456750533] [2025-03-09 01:22:26,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 01:22:26,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-09 01:22:26,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 01:22:26,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-09 01:22:26,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2025-03-09 01:22:26,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 88 [2025-03-09 01:22:26,447 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) [2025-03-09 01:22:26,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 01:22:26,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 88 [2025-03-09 01:22:26,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand