./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock-pthread.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 640f2537ee1134d51aea0c08ed10cc1d89c2a65b937ff07b07bc614e0b9289fc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:10:35,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:10:35,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:10:35,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:10:35,594 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:10:35,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:10:35,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:10:35,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:10:35,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:10:35,656 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:10:35,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:10:35,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:10:35,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:10:35,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:10:35,660 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:10:35,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:10:35,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:10:35,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:10:35,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:10:35,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:10:35,664 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:10:35,667 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:10:35,667 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:10:35,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:10:35,668 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:10:35,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:10:35,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:10:35,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:10:35,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:10:35,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:10:35,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:10:35,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:10:35,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:10:35,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:10:35,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:10:35,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:10:35,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:10:35,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:10:35,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:10:35,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:10:35,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:10:35,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:10:35,674 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 640f2537ee1134d51aea0c08ed10cc1d89c2a65b937ff07b07bc614e0b9289fc [2024-10-13 12:10:35,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:10:35,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:10:35,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:10:35,993 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:10:35,994 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:10:35,995 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock-pthread.i [2024-10-13 12:10:37,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:10:37,909 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:10:37,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock-pthread.i [2024-10-13 12:10:37,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ded729a/f758b657cc3048f29d3c4af8a624e16e/FLAG8f747b6d4 [2024-10-13 12:10:38,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ded729a/f758b657cc3048f29d3c4af8a624e16e [2024-10-13 12:10:38,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:10:38,211 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:10:38,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:10:38,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:10:38,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:10:38,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7199c329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38, skipping insertion in model container [2024-10-13 12:10:38,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,277 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:10:38,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:10:38,716 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:10:38,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:10:38,834 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:10:38,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38 WrapperNode [2024-10-13 12:10:38,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:10:38,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:10:38,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:10:38,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:10:38,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,865 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,887 INFO L138 Inliner]: procedures = 165, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-10-13 12:10:38,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:10:38,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:10:38,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:10:38,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:10:38,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,908 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,936 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 0 writes are split as follows [0, 0]. [2024-10-13 12:10:38,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,948 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:10:38,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:10:38,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:10:38,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:10:38,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (1/1) ... [2024-10-13 12:10:38,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:10:38,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:10:39,015 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) [2024-10-13 12:10:39,019 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 [2024-10-13 12:10:39,068 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-10-13 12:10:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 12:10:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 12:10:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-10-13 12:10:39,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:10:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:10:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-10-13 12:10:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:10:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:10:39,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:10:39,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:10:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:10:39,074 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:10:39,224 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:10:39,226 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:10:39,434 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:10:39,434 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:10:39,592 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:10:39,592 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:10:39,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:39 BoogieIcfgContainer [2024-10-13 12:10:39,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:10:39,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:10:39,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:10:39,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:10:39,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:10:38" (1/3) ... [2024-10-13 12:10:39,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683af41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:39, skipping insertion in model container [2024-10-13 12:10:39,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:38" (2/3) ... [2024-10-13 12:10:39,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683af41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:39, skipping insertion in model container [2024-10-13 12:10:39,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:39" (3/3) ... [2024-10-13 12:10:39,604 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock-pthread.i [2024-10-13 12:10:39,624 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:10:39,625 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:10:39,625 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:10:39,661 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:10:39,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 26 transitions, 56 flow [2024-10-13 12:10:39,734 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-10-13 12:10:39,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:10:39,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 25 events. 2/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-10-13 12:10:39,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 26 transitions, 56 flow [2024-10-13 12:10:39,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 24 transitions, 51 flow [2024-10-13 12:10:39,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:10:39,772 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;@24a1e61a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:10:39,774 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 12:10:39,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:10:39,786 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-13 12:10:39,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:10:39,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:39,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:39,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:10:39,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1822065679, now seen corresponding path program 1 times [2024-10-13 12:10:39,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:39,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160017809] [2024-10-13 12:10:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:39,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:10:40,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:40,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160017809] [2024-10-13 12:10:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160017809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:40,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:40,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:10:40,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821005522] [2024-10-13 12:10:40,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:40,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:10:40,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:10:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:10:40,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 26 [2024-10-13 12:10:40,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 51 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-10-13 12:10:40,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:40,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 26 [2024-10-13 12:10:40,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:40,517 INFO L124 PetriNetUnfolderBase]: 51/143 cut-off events. [2024-10-13 12:10:40,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:10:40,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 143 events. 51/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 516 event pairs, 7 based on Foata normal form. 6/145 useless extension candidates. Maximal degree in co-relation 268. Up to 47 conditions per place. [2024-10-13 12:10:40,521 INFO L140 encePairwiseOnDemand]: 15/26 looper letters, 32 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2024-10-13 12:10:40,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 50 transitions, 193 flow [2024-10-13 12:10:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:10:40,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:10:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-10-13 12:10:40,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46634615384615385 [2024-10-13 12:10:40,537 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 51 flow. Second operand 8 states and 97 transitions. [2024-10-13 12:10:40,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 50 transitions, 193 flow [2024-10-13 12:10:40,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:10:40,545 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 122 flow [2024-10-13 12:10:40,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=122, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2024-10-13 12:10:40,554 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2024-10-13 12:10:40,554 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 122 flow [2024-10-13 12:10:40,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2024-10-13 12:10:40,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:40,556 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:40,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:10:40,557 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:10:40,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash 649421406, now seen corresponding path program 1 times [2024-10-13 12:10:40,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:40,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794692888] [2024-10-13 12:10:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:40,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:10:40,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:40,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794692888] [2024-10-13 12:10:40,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794692888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:40,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:40,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:10:40,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174337648] [2024-10-13 12:10:40,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:40,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:10:40,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:40,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:10:40,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:10:40,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 26 [2024-10-13 12:10:40,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-10-13 12:10:40,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:40,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 26 [2024-10-13 12:10:40,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:40,723 INFO L124 PetriNetUnfolderBase]: 26/92 cut-off events. [2024-10-13 12:10:40,724 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-13 12:10:40,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 92 events. 26/92 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 316 event pairs, 19 based on Foata normal form. 8/94 useless extension candidates. Maximal degree in co-relation 218. Up to 69 conditions per place. [2024-10-13 12:10:40,726 INFO L140 encePairwiseOnDemand]: 24/26 looper letters, 9 selfloop transitions, 1 changer transitions 8/29 dead transitions. [2024-10-13 12:10:40,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 150 flow [2024-10-13 12:10:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:10:40,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:10:40,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-10-13 12:10:40,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2024-10-13 12:10:40,728 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 122 flow. Second operand 3 states and 42 transitions. [2024-10-13 12:10:40,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 150 flow [2024-10-13 12:10:40,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 150 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:10:40,731 INFO L231 Difference]: Finished difference. Result has 38 places, 21 transitions, 80 flow [2024-10-13 12:10:40,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=38, PETRI_TRANSITIONS=21} [2024-10-13 12:10:40,732 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2024-10-13 12:10:40,733 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 21 transitions, 80 flow [2024-10-13 12:10:40,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-10-13 12:10:40,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:40,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:40,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:10:40,734 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:10:40,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:40,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1082910756, now seen corresponding path program 1 times [2024-10-13 12:10:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:40,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366596047] [2024-10-13 12:10:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:10:40,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:40,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366596047] [2024-10-13 12:10:40,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366596047] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:40,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:40,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:10:40,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807074089] [2024-10-13 12:10:40,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:40,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:10:40,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:40,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:10:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:10:40,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 26 [2024-10-13 12:10:40,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 21 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-13 12:10:40,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:40,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 26 [2024-10-13 12:10:40,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:40,940 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-10-13 12:10:40,940 INFO L125 PetriNetUnfolderBase]: For 13/15 co-relation queries the response was YES. [2024-10-13 12:10:40,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 22 events. 2/22 cut-off events. For 13/15 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 5/26 useless extension candidates. Maximal degree in co-relation 48. Up to 7 conditions per place. [2024-10-13 12:10:40,941 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 7 selfloop transitions, 1 changer transitions 3/20 dead transitions. [2024-10-13 12:10:40,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 96 flow [2024-10-13 12:10:40,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:10:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:10:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-10-13 12:10:40,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-10-13 12:10:40,946 INFO L175 Difference]: Start difference. First operand has 38 places, 21 transitions, 80 flow. Second operand 3 states and 43 transitions. [2024-10-13 12:10:40,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 96 flow [2024-10-13 12:10:40,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 86 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-13 12:10:40,949 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 61 flow [2024-10-13 12:10:40,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=61, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2024-10-13 12:10:40,951 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2024-10-13 12:10:40,951 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 61 flow [2024-10-13 12:10:40,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-13 12:10:40,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:40,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:40,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:10:40,952 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 12:10:40,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash 512065968, now seen corresponding path program 2 times [2024-10-13 12:10:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:40,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361747133] [2024-10-13 12:10:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:41,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:10:41,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:41,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361747133] [2024-10-13 12:10:41,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361747133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:41,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:41,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:10:41,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22568312] [2024-10-13 12:10:41,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:41,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:10:41,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:41,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:10:41,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:10:41,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 26 [2024-10-13 12:10:41,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-13 12:10:41,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:41,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 26 [2024-10-13 12:10:41,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:41,133 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-10-13 12:10:41,134 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 12:10:41,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 12 events. 1/12 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-10-13 12:10:41,134 INFO L140 encePairwiseOnDemand]: 24/26 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2024-10-13 12:10:41,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 11 transitions, 49 flow [2024-10-13 12:10:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:10:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:10:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-10-13 12:10:41,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-10-13 12:10:41,136 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 61 flow. Second operand 3 states and 40 transitions. [2024-10-13 12:10:41,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 11 transitions, 49 flow [2024-10-13 12:10:41,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 11 transitions, 43 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:10:41,139 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2024-10-13 12:10:41,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2024-10-13 12:10:41,140 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2024-10-13 12:10:41,140 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2024-10-13 12:10:41,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-10-13 12:10:41,148 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2024-10-13 12:10:41,149 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2024-10-13 12:10:41,149 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-13 12:10:41,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:10:41,149 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-13 12:10:41,154 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 12:10:41,154 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 12:10:41,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:10:41 BasicIcfg [2024-10-13 12:10:41,165 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 12:10:41,166 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 12:10:41,167 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 12:10:41,167 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 12:10:41,168 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:39" (3/4) ... [2024-10-13 12:10:41,170 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 12:10:41,174 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2024-10-13 12:10:41,180 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2024-10-13 12:10:41,181 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-13 12:10:41,181 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-13 12:10:41,182 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-10-13 12:10:41,286 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 12:10:41,286 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 12:10:41,286 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 12:10:41,287 INFO L158 Benchmark]: Toolchain (without parser) took 3075.98ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 62.3MB in the beginning and 72.6MB in the end (delta: -10.3MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2024-10-13 12:10:41,287 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory was 101.2MB in the beginning and 101.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:10:41,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 622.30ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 62.1MB in the beginning and 136.2MB in the end (delta: -74.0MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2024-10-13 12:10:41,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.48ms. Allocated memory is still 176.2MB. Free memory was 136.2MB in the beginning and 134.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:10:41,288 INFO L158 Benchmark]: Boogie Preprocessor took 71.53ms. Allocated memory is still 176.2MB. Free memory was 134.1MB in the beginning and 132.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:10:41,289 INFO L158 Benchmark]: RCFGBuilder took 629.46ms. Allocated memory is still 176.2MB. Free memory was 132.0MB in the beginning and 105.6MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-13 12:10:41,289 INFO L158 Benchmark]: TraceAbstraction took 1570.09ms. Allocated memory is still 176.2MB. Free memory was 104.7MB in the beginning and 76.8MB in the end (delta: 27.9MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2024-10-13 12:10:41,289 INFO L158 Benchmark]: Witness Printer took 120.44ms. Allocated memory is still 176.2MB. Free memory was 76.8MB in the beginning and 72.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 12:10:41,294 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 134.2MB. Free memory was 101.2MB in the beginning and 101.1MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 622.30ms. Allocated memory was 134.2MB in the beginning and 176.2MB in the end (delta: 41.9MB). Free memory was 62.1MB in the beginning and 136.2MB in the end (delta: -74.0MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.48ms. Allocated memory is still 176.2MB. Free memory was 136.2MB in the beginning and 134.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.53ms. Allocated memory is still 176.2MB. Free memory was 134.1MB in the beginning and 132.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 629.46ms. Allocated memory is still 176.2MB. Free memory was 132.0MB in the beginning and 105.6MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1570.09ms. Allocated memory is still 176.2MB. Free memory was 104.7MB in the beginning and 76.8MB in the end (delta: 27.9MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Witness Printer took 120.44ms. Allocated memory is still 176.2MB. Free memory was 76.8MB in the beginning and 72.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 713]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 32 locations, 3 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: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 159 IncrementalHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 159 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=1, InterpolantAutomatonStates: 17, 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, 0.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 127 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 12:10:41,331 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 Writing output log to file Ultimate.log Result: TRUE