./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/lazy01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 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/pthread/lazy01.i -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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:41:46,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:41:46,380 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:41:46,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:41:46,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:41:46,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:41:46,405 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:41:46,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:41:46,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:41:46,406 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:41:46,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:41:46,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:41:46,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:41:46,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:41:46,407 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:41:46,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:41:46,408 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:41:46,409 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:41:46,409 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:41:46,409 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:41:46,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:41:46,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:41:46,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:41:46,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:41:46,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:41:46,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:41:46,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:41:46,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:41:46,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:41:46,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:41:46,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:41:46,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:41:46,410 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 -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2025-03-04 09:41:46,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:41:46,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:41:46,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:41:46,652 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:41:46,652 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:41:46,653 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/lazy01.i [2025-03-04 09:41:47,791 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d9850cd/8cfd33bb3bdb4e3498ce2128251c3340/FLAGdf62a5c21 [2025-03-04 09:41:48,113 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:41:48,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2025-03-04 09:41:48,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d9850cd/8cfd33bb3bdb4e3498ce2128251c3340/FLAGdf62a5c21 [2025-03-04 09:41:48,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04d9850cd/8cfd33bb3bdb4e3498ce2128251c3340 [2025-03-04 09:41:48,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:41:48,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:41:48,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:41:48,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:41:48,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:41:48,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716b5404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48, skipping insertion in model container [2025-03-04 09:41:48,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,395 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:41:48,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:41:48,595 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:41:48,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:41:48,656 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:41:48,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48 WrapperNode [2025-03-04 09:41:48,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:41:48,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:41:48,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:41:48,659 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:41:48,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,692 INFO L138 Inliner]: procedures = 169, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2025-03-04 09:41:48,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:41:48,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:41:48,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:41:48,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:41:48,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,716 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-03-04 09:41:48,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,717 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,725 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:41:48,734 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:41:48,734 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:41:48,735 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:41:48,735 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (1/1) ... [2025-03-04 09:41:48,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:41:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:48,762 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) [2025-03-04 09:41:48,765 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 [2025-03-04 09:41:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 09:41:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 09:41:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 09:41:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 09:41:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:41:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:41:48,786 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:41:48,869 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:41:48,870 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:41:49,010 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:41:49,011 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:41:49,094 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:41:49,094 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:41:49,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:41:49 BoogieIcfgContainer [2025-03-04 09:41:49,095 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:41:49,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:41:49,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:41:49,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:41:49,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:41:48" (1/3) ... [2025-03-04 09:41:49,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2910f8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:41:49, skipping insertion in model container [2025-03-04 09:41:49,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:48" (2/3) ... [2025-03-04 09:41:49,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2910f8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:41:49, skipping insertion in model container [2025-03-04 09:41:49,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:41:49" (3/3) ... [2025-03-04 09:41:49,101 INFO L128 eAbstractionObserver]: Analyzing ICFG lazy01.i [2025-03-04 09:41:49,112 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:41:49,113 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG lazy01.i that has 4 procedures, 37 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 09:41:49,114 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:41:49,162 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 09:41:49,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2025-03-04 09:41:49,216 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2025-03-04 09:41:49,219 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 09:41:49,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-03-04 09:41:49,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2025-03-04 09:41:49,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2025-03-04 09:41:49,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:41:49,245 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;@4209eca0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:41:49,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 09:41:49,257 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:41:49,258 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2025-03-04 09:41:49,258 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 09:41:49,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:49,259 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:49,260 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:49,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 976122537, now seen corresponding path program 1 times [2025-03-04 09:41:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:41:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678095248] [2025-03-04 09:41:49,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:41:49,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:41:49,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:41:49,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:49,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:41:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678095248] [2025-03-04 09:41:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678095248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:49,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:49,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:41:49,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491556645] [2025-03-04 09:41:49,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:49,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:41:49,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:41:49,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:41:49,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:41:49,483 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-04 09:41:49,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-04 09:41:49,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:49,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-04 09:41:49,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:49,680 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2025-03-04 09:41:49,680 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2025-03-04 09:41:49,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5452 event pairs, 178 based on Foata normal form. 95/1097 useless extension candidates. Maximal degree in co-relation 1849. Up to 827 conditions per place. [2025-03-04 09:41:49,686 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2025-03-04 09:41:49,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 178 flow [2025-03-04 09:41:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:41:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:41:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-04 09:41:49,694 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2025-03-04 09:41:49,695 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 73 transitions. [2025-03-04 09:41:49,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 178 flow [2025-03-04 09:41:49,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 09:41:49,701 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2025-03-04 09:41:49,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-03-04 09:41:49,705 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2025-03-04 09:41:49,705 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2025-03-04 09:41:49,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-04 09:41:49,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:49,705 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:49,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:41:49,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:49,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1504738601, now seen corresponding path program 1 times [2025-03-04 09:41:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:41:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438087242] [2025-03-04 09:41:49,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:49,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:41:49,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 09:41:49,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 09:41:49,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:49,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:49,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:41:49,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438087242] [2025-03-04 09:41:49,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438087242] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:49,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:49,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:41:49,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649276188] [2025-03-04 09:41:49,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:49,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:41:49,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:41:49,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:41:49,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:41:49,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-04 09:41:49,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2025-03-04 09:41:49,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:49,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-04 09:41:49,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:49,948 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2025-03-04 09:41:49,948 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2025-03-04 09:41:49,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3028 event pairs, 108 based on Foata normal form. 80/708 useless extension candidates. Maximal degree in co-relation 734. Up to 327 conditions per place. [2025-03-04 09:41:49,953 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2025-03-04 09:41:49,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 179 flow [2025-03-04 09:41:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:41:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:41:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-04 09:41:49,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2025-03-04 09:41:49,955 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 71 transitions. [2025-03-04 09:41:49,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 179 flow [2025-03-04 09:41:49,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:41:49,958 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2025-03-04 09:41:49,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2025-03-04 09:41:49,958 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2025-03-04 09:41:49,959 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2025-03-04 09:41:49,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2025-03-04 09:41:49,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:49,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:49,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:41:49,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:49,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1616746645, now seen corresponding path program 1 times [2025-03-04 09:41:49,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:41:49,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61148952] [2025-03-04 09:41:49,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:41:49,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:41:49,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:41:49,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:49,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:41:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61148952] [2025-03-04 09:41:50,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61148952] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:50,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:50,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:41:50,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645645688] [2025-03-04 09:41:50,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:50,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:41:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:41:50,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:41:50,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:41:50,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-04 09:41:50,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-04 09:41:50,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:50,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-04 09:41:50,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:50,144 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2025-03-04 09:41:50,144 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2025-03-04 09:41:50,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 607 events. 298/607 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2850 event pairs, 65 based on Foata normal form. 5/607 useless extension candidates. Maximal degree in co-relation 255. Up to 363 conditions per place. [2025-03-04 09:41:50,146 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2025-03-04 09:41:50,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 238 flow [2025-03-04 09:41:50,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:41:50,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:41:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-03-04 09:41:50,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2025-03-04 09:41:50,150 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 92 transitions. [2025-03-04 09:41:50,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 238 flow [2025-03-04 09:41:50,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:41:50,152 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2025-03-04 09:41:50,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2025-03-04 09:41:50,153 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2025-03-04 09:41:50,153 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2025-03-04 09:41:50,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-04 09:41:50,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:50,154 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:50,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:41:50,154 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:50,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:50,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1633448747, now seen corresponding path program 1 times [2025-03-04 09:41:50,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:41:50,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649800702] [2025-03-04 09:41:50,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:50,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:41:50,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:41:50,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:41:50,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:50,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:50,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:50,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:41:50,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649800702] [2025-03-04 09:41:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649800702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:50,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:50,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:41:50,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096511517] [2025-03-04 09:41:50,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:50,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:41:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:41:50,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:41:50,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:41:50,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2025-03-04 09:41:50,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2025-03-04 09:41:50,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:50,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2025-03-04 09:41:50,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:50,322 INFO L124 PetriNetUnfolderBase]: 341/666 cut-off events. [2025-03-04 09:41:50,322 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2025-03-04 09:41:50,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 666 events. 341/666 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3018 event pairs, 91 based on Foata normal form. 4/667 useless extension candidates. Maximal degree in co-relation 508. Up to 316 conditions per place. [2025-03-04 09:41:50,325 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 43 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2025-03-04 09:41:50,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 261 flow [2025-03-04 09:41:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:41:50,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:41:50,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2025-03-04 09:41:50,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2025-03-04 09:41:50,327 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 94 transitions. [2025-03-04 09:41:50,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 261 flow [2025-03-04 09:41:50,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 253 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 09:41:50,329 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 121 flow [2025-03-04 09:41:50,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2025-03-04 09:41:50,329 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2025-03-04 09:41:50,329 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 121 flow [2025-03-04 09:41:50,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2025-03-04 09:41:50,330 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:50,330 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:50,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:41:50,330 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:50,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1003020077, now seen corresponding path program 1 times [2025-03-04 09:41:50,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:41:50,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236554006] [2025-03-04 09:41:50,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:50,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:41:50,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:41:50,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:41:50,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:50,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:41:50,352 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:41:50,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:41:50,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:41:50,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:50,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:41:50,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 09:41:50,379 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:41:50,379 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-03-04 09:41:50,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-03-04 09:41:50,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2025-03-04 09:41:50,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-04 09:41:50,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2025-03-04 09:41:50,381 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2025-03-04 09:41:50,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:41:50,382 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-04 09:41:50,408 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 09:41:50,408 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 09:41:50,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 09:41:50 BasicIcfg [2025-03-04 09:41:50,412 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 09:41:50,413 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 09:41:50,413 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 09:41:50,413 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 09:41:50,414 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:41:49" (3/4) ... [2025-03-04 09:41:50,415 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 09:41:50,415 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 09:41:50,416 INFO L158 Benchmark]: Toolchain (without parser) took 2053.75ms. Allocated memory is still 167.8MB. Free memory was 130.9MB in the beginning and 84.0MB in the end (delta: 46.8MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2025-03-04 09:41:50,417 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 226.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:41:50,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.08ms. Allocated memory is still 167.8MB. Free memory was 130.4MB in the beginning and 110.9MB in the end (delta: 19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:41:50,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.93ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 109.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:41:50,418 INFO L158 Benchmark]: Boogie Preprocessor took 38.94ms. Allocated memory is still 167.8MB. Free memory was 109.4MB in the beginning and 108.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:41:50,419 INFO L158 Benchmark]: IcfgBuilder took 360.47ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 86.8MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:41:50,419 INFO L158 Benchmark]: TraceAbstraction took 1315.73ms. Allocated memory is still 167.8MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 2.0MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2025-03-04 09:41:50,419 INFO L158 Benchmark]: Witness Printer took 2.38ms. Allocated memory is still 167.8MB. Free memory was 84.0MB in the beginning and 84.0MB in the end (delta: 27.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:41:50,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 226.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.08ms. Allocated memory is still 167.8MB. Free memory was 130.4MB in the beginning and 110.9MB in the end (delta: 19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.93ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 109.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.94ms. Allocated memory is still 167.8MB. Free memory was 109.4MB in the beginning and 108.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 360.47ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 86.8MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1315.73ms. Allocated memory is still 167.8MB. Free memory was 86.3MB in the beginning and 84.4MB in the end (delta: 2.0MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Witness Printer took 2.38ms. Allocated memory is still 167.8MB. Free memory was 84.0MB in the beginning and 84.0MB in the end (delta: 27.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-2] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1, t3=0] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 212 IncrementalHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 212 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-04 09:41:50,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/pthread/lazy01.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:41:52,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:41:52,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-03-04 09:41:52,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:41:52,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:41:52,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:41:52,321 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:41:52,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:41:52,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:41:52,321 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:41:52,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:41:52,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:41:52,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:41:52,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:41:52,321 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:41:52,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:41:52,321 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:41:52,322 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:41:52,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:41:52,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:41:52,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:41:52,323 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 09:41:52,323 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 09:41:52,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:41:52,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:41:52,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:41:52,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:41:52,323 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 -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2025-03-04 09:41:52,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:41:52,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:41:52,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:41:52,589 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:41:52,589 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:41:52,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/lazy01.i [2025-03-04 09:41:53,719 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ea58bde/765ddde57e15462d934c54f7de39d121/FLAG48992a6c8 [2025-03-04 09:41:53,965 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:41:53,968 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2025-03-04 09:41:53,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ea58bde/765ddde57e15462d934c54f7de39d121/FLAG48992a6c8 [2025-03-04 09:41:54,295 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5ea58bde/765ddde57e15462d934c54f7de39d121 [2025-03-04 09:41:54,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:41:54,297 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:41:54,298 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:41:54,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:41:54,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:41:54,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6509591a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54, skipping insertion in model container [2025-03-04 09:41:54,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,326 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:41:54,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:41:54,513 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:41:54,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:41:54,593 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:41:54,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54 WrapperNode [2025-03-04 09:41:54,594 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:41:54,595 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:41:54,595 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:41:54,595 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:41:54,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,612 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,630 INFO L138 Inliner]: procedures = 173, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2025-03-04 09:41:54,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:41:54,632 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:41:54,632 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:41:54,632 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:41:54,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,656 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2025-03-04 09:41:54,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,664 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:41:54,672 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:41:54,675 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:41:54,675 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:41:54,676 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (1/1) ... [2025-03-04 09:41:54,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:41:54,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:54,705 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) [2025-03-04 09:41:54,706 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 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 09:41:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 09:41:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-04 09:41:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2025-03-04 09:41:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 09:41:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:41:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:41:54,721 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 09:41:54,813 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:41:54,815 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:41:54,947 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 09:41:54,947 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:41:55,055 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:41:55,057 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 09:41:55,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:41:55 BoogieIcfgContainer [2025-03-04 09:41:55,057 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:41:55,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:41:55,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:41:55,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:41:55,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:41:54" (1/3) ... [2025-03-04 09:41:55,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a97379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:41:55, skipping insertion in model container [2025-03-04 09:41:55,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:41:54" (2/3) ... [2025-03-04 09:41:55,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a97379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:41:55, skipping insertion in model container [2025-03-04 09:41:55,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:41:55" (3/3) ... [2025-03-04 09:41:55,066 INFO L128 eAbstractionObserver]: Analyzing ICFG lazy01.i [2025-03-04 09:41:55,075 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:41:55,077 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG lazy01.i that has 4 procedures, 37 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 09:41:55,077 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 09:41:55,116 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-04 09:41:55,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2025-03-04 09:41:55,161 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2025-03-04 09:41:55,162 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 09:41:55,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2025-03-04 09:41:55,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2025-03-04 09:41:55,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2025-03-04 09:41:55,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:41:55,184 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;@1f6162b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:41:55,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-04 09:41:55,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 09:41:55,190 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2025-03-04 09:41:55,191 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 09:41:55,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:55,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:55,191 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:55,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1047755735, now seen corresponding path program 1 times [2025-03-04 09:41:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:41:55,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231380621] [2025-03-04 09:41:55,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:55,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:55,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:55,208 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:41:55,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:41:55,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 09:41:55,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 09:41:55,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:55,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:55,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-04 09:41:55,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:55,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:55,341 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:41:55,341 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:41:55,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231380621] [2025-03-04 09:41:55,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231380621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:55,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:55,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:41:55,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315688915] [2025-03-04 09:41:55,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:55,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:41:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:41:55,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:41:55,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:41:55,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-04 09:41:55,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-04 09:41:55,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:55,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-04 09:41:55,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:55,565 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2025-03-04 09:41:55,566 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2025-03-04 09:41:55,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5447 event pairs, 178 based on Foata normal form. 95/1097 useless extension candidates. Maximal degree in co-relation 1849. Up to 827 conditions per place. [2025-03-04 09:41:55,574 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2025-03-04 09:41:55,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 178 flow [2025-03-04 09:41:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:41:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:41:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-03-04 09:41:55,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2025-03-04 09:41:55,585 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 73 transitions. [2025-03-04 09:41:55,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 178 flow [2025-03-04 09:41:55,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-04 09:41:55,594 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2025-03-04 09:41:55,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2025-03-04 09:41:55,598 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2025-03-04 09:41:55,599 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2025-03-04 09:41:55,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2025-03-04 09:41:55,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:55,601 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:55,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 09:41:55,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:55,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:55,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:55,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2111436519, now seen corresponding path program 1 times [2025-03-04 09:41:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:41:55,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11837584] [2025-03-04 09:41:55,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:55,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:55,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:55,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:41:55,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:41:55,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 09:41:55,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 09:41:55,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:55,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:55,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:41:55,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:55,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-03-04 09:41:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:55,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:41:55,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:41:55,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11837584] [2025-03-04 09:41:55,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11837584] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:55,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:55,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:41:55,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185805039] [2025-03-04 09:41:55,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:55,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:41:55,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:41:55,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:41:55,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:41:55,897 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-04 09:41:55,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2025-03-04 09:41:55,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:55,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-04 09:41:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:55,986 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2025-03-04 09:41:55,987 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2025-03-04 09:41:55,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3023 event pairs, 108 based on Foata normal form. 80/708 useless extension candidates. Maximal degree in co-relation 734. Up to 327 conditions per place. [2025-03-04 09:41:55,992 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2025-03-04 09:41:55,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 179 flow [2025-03-04 09:41:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:41:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 09:41:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-03-04 09:41:55,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2025-03-04 09:41:55,995 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 71 transitions. [2025-03-04 09:41:55,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 179 flow [2025-03-04 09:41:55,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:41:55,997 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2025-03-04 09:41:55,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2025-03-04 09:41:55,999 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2025-03-04 09:41:55,999 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2025-03-04 09:41:55,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2025-03-04 09:41:55,999 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:55,999 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:56,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 09:41:56,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:56,200 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:56,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:56,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1050454379, now seen corresponding path program 1 times [2025-03-04 09:41:56,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:41:56,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279518100] [2025-03-04 09:41:56,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:56,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:56,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:56,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:41:56,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:41:56,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:41:56,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:41:56,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:56,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:56,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:41:56,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:56,305 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:41:56,305 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:41:56,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279518100] [2025-03-04 09:41:56,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279518100] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:56,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:56,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:41:56,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740595089] [2025-03-04 09:41:56,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:56,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:41:56,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:41:56,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:41:56,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:41:56,309 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-04 09:41:56,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-04 09:41:56,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:56,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-04 09:41:56,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:56,408 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2025-03-04 09:41:56,408 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2025-03-04 09:41:56,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 607 events. 298/607 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2833 event pairs, 65 based on Foata normal form. 5/607 useless extension candidates. Maximal degree in co-relation 255. Up to 363 conditions per place. [2025-03-04 09:41:56,411 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2025-03-04 09:41:56,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 238 flow [2025-03-04 09:41:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:41:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:41:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2025-03-04 09:41:56,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2025-03-04 09:41:56,412 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 92 transitions. [2025-03-04 09:41:56,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 238 flow [2025-03-04 09:41:56,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 09:41:56,418 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2025-03-04 09:41:56,418 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2025-03-04 09:41:56,418 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2025-03-04 09:41:56,418 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2025-03-04 09:41:56,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-04 09:41:56,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:56,419 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:56,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:41:56,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:56,619 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:56,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:56,620 INFO L85 PathProgramCache]: Analyzing trace with hash 5682475, now seen corresponding path program 1 times [2025-03-04 09:41:56,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:41:56,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413143844] [2025-03-04 09:41:56,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:56,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:56,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:56,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:41:56,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:41:56,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 09:41:56,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 09:41:56,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:56,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:41:56,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 09:41:56,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:41:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:41:56,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 09:41:56,707 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 09:41:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413143844] [2025-03-04 09:41:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413143844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:41:56,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:41:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:41:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716754931] [2025-03-04 09:41:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:41:56,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:41:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 09:41:56,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:41:56,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:41:56,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2025-03-04 09:41:56,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-04 09:41:56,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 09:41:56,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2025-03-04 09:41:56,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 09:41:56,829 INFO L124 PetriNetUnfolderBase]: 294/567 cut-off events. [2025-03-04 09:41:56,829 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2025-03-04 09:41:56,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 567 events. 294/567 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2541 event pairs, 100 based on Foata normal form. 4/562 useless extension candidates. Maximal degree in co-relation 491. Up to 381 conditions per place. [2025-03-04 09:41:56,831 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 38 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2025-03-04 09:41:56,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 232 flow [2025-03-04 09:41:56,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:41:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 09:41:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2025-03-04 09:41:56,834 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5986842105263158 [2025-03-04 09:41:56,834 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 91 transitions. [2025-03-04 09:41:56,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 232 flow [2025-03-04 09:41:56,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 224 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-04 09:41:56,836 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 106 flow [2025-03-04 09:41:56,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2025-03-04 09:41:56,836 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2025-03-04 09:41:56,836 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 106 flow [2025-03-04 09:41:56,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-04 09:41:56,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 09:41:56,836 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:41:56,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:41:57,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:57,037 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-04 09:41:57,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:41:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1876103597, now seen corresponding path program 1 times [2025-03-04 09:41:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 09:41:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574115624] [2025-03-04 09:41:57,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:41:57,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:57,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:41:57,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 09:41:57,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:41:57,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:41:57,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:41:57,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:57,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:41:57,109 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 09:41:57,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:41:57,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:41:57,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:41:57,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 09:41:57,165 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-04 09:41:57,166 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 09:41:57,166 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-03-04 09:41:57,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-03-04 09:41:57,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2025-03-04 09:41:57,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-04 09:41:57,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2025-03-04 09:41:57,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2025-03-04 09:41:57,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 09:41:57,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:41:57,369 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-04 09:41:57,389 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 09:41:57,389 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 09:41:57,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 09:41:57 BasicIcfg [2025-03-04 09:41:57,392 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 09:41:57,393 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 09:41:57,393 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 09:41:57,393 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 09:41:57,394 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:41:55" (3/4) ... [2025-03-04 09:41:57,395 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 09:41:57,395 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 09:41:57,396 INFO L158 Benchmark]: Toolchain (without parser) took 3098.27ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 30.4MB in the end (delta: 28.2MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2025-03-04 09:41:57,396 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:41:57,396 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.04ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 38.2MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 09:41:57,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.88ms. Allocated memory is still 83.9MB. Free memory was 38.2MB in the beginning and 36.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 09:41:57,396 INFO L158 Benchmark]: Boogie Preprocessor took 39.43ms. Allocated memory is still 83.9MB. Free memory was 36.4MB in the beginning and 34.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:41:57,397 INFO L158 Benchmark]: IcfgBuilder took 385.41ms. Allocated memory is still 83.9MB. Free memory was 34.5MB in the beginning and 45.4MB in the end (delta: -10.9MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2025-03-04 09:41:57,397 INFO L158 Benchmark]: TraceAbstraction took 2333.26ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 30.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2025-03-04 09:41:57,397 INFO L158 Benchmark]: Witness Printer took 2.29ms. Allocated memory is still 83.9MB. Free memory was 30.9MB in the beginning and 30.4MB in the end (delta: 472.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 09:41:57,398 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.04ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 38.2MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.88ms. Allocated memory is still 83.9MB. Free memory was 38.2MB in the beginning and 36.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.43ms. Allocated memory is still 83.9MB. Free memory was 36.4MB in the beginning and 34.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 385.41ms. Allocated memory is still 83.9MB. Free memory was 34.5MB in the beginning and 45.4MB in the end (delta: -10.9MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2333.26ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 30.9MB in the end (delta: 14.0MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * Witness Printer took 2.29ms. Allocated memory is still 83.9MB. Free memory was 30.9MB in the beginning and 30.4MB in the end (delta: 472.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-2] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-2, t2=-1, t3=0] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1 mSDtfsCounter, 256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-04 09:41:57,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample