./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.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.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 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:10:37,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:10:37,391 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:10:37,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:10:37,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:10:37,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:10:37,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:10:37,425 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:10:37,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:10:37,426 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:10:37,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:10:37,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:10:37,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:10:37,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:10:37,428 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:10:37,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:10:37,429 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:10:37,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:10:37,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:10:37,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:10:37,430 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:10:37,431 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:10:37,431 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:10:37,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:10:37,432 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:10:37,432 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:10:37,433 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:10:37,433 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:10:37,433 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:10:37,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:10:37,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:10:37,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:10:37,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:10:37,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:10:37,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:10:37,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:10:37,436 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:10:37,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:10:37,436 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:10:37,436 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:10:37,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:10:37,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:10:37,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 [2024-10-13 12:10:37,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:10:37,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:10:37,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:10:37,765 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:10:37,766 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:10:37,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2024-10-13 12:10:39,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:10:39,773 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:10:39,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/18_read_write_lock.i [2024-10-13 12:10:39,798 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323eccc7d/e36f1ce8ed1f411bbea93c95ed6da0a4/FLAGdeae6bdf1 [2024-10-13 12:10:39,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323eccc7d/e36f1ce8ed1f411bbea93c95ed6da0a4 [2024-10-13 12:10:39,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:10:39,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:10:39,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:10:39,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:10:39,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:10:39,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:39" (1/1) ... [2024-10-13 12:10:39,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18fba6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:39, skipping insertion in model container [2024-10-13 12:10:39,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:10:39" (1/1) ... [2024-10-13 12:10:39,875 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:10:40,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:10:40,315 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:10:40,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:10:40,421 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:10:40,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40 WrapperNode [2024-10-13 12:10:40,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:10:40,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:10:40,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:10:40,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:10:40,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,472 INFO L138 Inliner]: procedures = 172, calls = 28, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 75 [2024-10-13 12:10:40,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:10:40,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:10:40,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:10:40,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:10:40,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,515 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 12:10:40,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,524 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,526 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:10:40,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:10:40,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:10:40,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:10:40,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (1/1) ... [2024-10-13 12:10:40,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:10:40,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:10:40,582 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 12:10:40,586 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 12:10:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 12:10:40,637 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 12:10:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 12:10:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:10:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:10:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 12:10:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:10:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:10:40,640 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 12:10:40,758 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:10:40,760 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:10:40,896 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:10:40,896 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:10:40,994 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:10:40,995 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:10:40,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:40 BoogieIcfgContainer [2024-10-13 12:10:40,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:10:40,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:10:40,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:10:41,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:10:41,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:10:39" (1/3) ... [2024-10-13 12:10:41,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586655bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:41, skipping insertion in model container [2024-10-13 12:10:41,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:10:40" (2/3) ... [2024-10-13 12:10:41,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@586655bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:10:41, skipping insertion in model container [2024-10-13 12:10:41,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:40" (3/3) ... [2024-10-13 12:10:41,006 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2024-10-13 12:10:41,026 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:10:41,028 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:10:41,028 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:10:41,071 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 12:10:41,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 26 transitions, 56 flow [2024-10-13 12:10:41,137 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2024-10-13 12:10:41,138 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:10:41,140 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 21 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 12:10:41,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 26 transitions, 56 flow [2024-10-13 12:10:41,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 24 transitions, 51 flow [2024-10-13 12:10:41,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:10:41,165 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;@2bf028d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:10:41,165 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 12:10:41,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:10:41,175 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-10-13 12:10:41,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:10:41,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:41,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:41,177 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 12:10:41,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:41,183 INFO L85 PathProgramCache]: Analyzing trace with hash 597478937, now seen corresponding path program 1 times [2024-10-13 12:10:41,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:41,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629935441] [2024-10-13 12:10:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:41,706 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 12:10:41,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:41,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629935441] [2024-10-13 12:10:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629935441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:41,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:41,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 12:10:41,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322329310] [2024-10-13 12:10:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:41,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 12:10:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:41,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 12:10:41,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 12:10:41,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2024-10-13 12:10:41,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 51 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 12:10:41,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:41,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2024-10-13 12:10:41,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:41,958 INFO L124 PetriNetUnfolderBase]: 30/111 cut-off events. [2024-10-13 12:10:41,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:10:41,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 111 events. 30/111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 418 event pairs, 5 based on Foata normal form. 4/112 useless extension candidates. Maximal degree in co-relation 190. Up to 31 conditions per place. [2024-10-13 12:10:41,962 INFO L140 encePairwiseOnDemand]: 15/26 looper letters, 23 selfloop transitions, 13 changer transitions 0/43 dead transitions. [2024-10-13 12:10:41,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 161 flow [2024-10-13 12:10:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:10:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:10:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-10-13 12:10:41,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 12:10:41,980 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 51 flow. Second operand 8 states and 104 transitions. [2024-10-13 12:10:41,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 161 flow [2024-10-13 12:10:41,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:10:41,986 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 122 flow [2024-10-13 12:10:41,988 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 12:10:41,992 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2024-10-13 12:10:41,992 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 122 flow [2024-10-13 12:10:41,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 12:10:41,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:41,993 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:41,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:10:41,994 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 12:10:41,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1349810599, now seen corresponding path program 1 times [2024-10-13 12:10:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389570813] [2024-10-13 12:10:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:42,057 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 12:10:42,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:42,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389570813] [2024-10-13 12:10:42,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389570813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:42,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:42,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:10:42,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552139841] [2024-10-13 12:10:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:42,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:10:42,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:10:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:10:42,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 26 [2024-10-13 12:10:42,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 12:10:42,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:42,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 26 [2024-10-13 12:10:42,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:42,087 INFO L124 PetriNetUnfolderBase]: 12/79 cut-off events. [2024-10-13 12:10:42,088 INFO L125 PetriNetUnfolderBase]: For 34/35 co-relation queries the response was YES. [2024-10-13 12:10:42,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 79 events. 12/79 cut-off events. For 34/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 294 event pairs, 7 based on Foata normal form. 5/79 useless extension candidates. Maximal degree in co-relation 170. Up to 31 conditions per place. [2024-10-13 12:10:42,089 INFO L140 encePairwiseOnDemand]: 24/26 looper letters, 6 selfloop transitions, 1 changer transitions 7/29 dead transitions. [2024-10-13 12:10:42,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 138 flow [2024-10-13 12:10:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:10:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:10:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-10-13 12:10:42,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-10-13 12:10:42,091 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 122 flow. Second operand 3 states and 48 transitions. [2024-10-13 12:10:42,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 138 flow [2024-10-13 12:10:42,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 138 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:10:42,094 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 82 flow [2024-10-13 12:10:42,094 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=82, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2024-10-13 12:10:42,095 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2024-10-13 12:10:42,095 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 82 flow [2024-10-13 12:10:42,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 12:10:42,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:42,095 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:42,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:10:42,096 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 12:10:42,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:42,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1554469476, now seen corresponding path program 1 times [2024-10-13 12:10:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:42,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358910624] [2024-10-13 12:10:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:42,173 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 12:10:42,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:42,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358910624] [2024-10-13 12:10:42,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358910624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:42,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:42,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:10:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528078937] [2024-10-13 12:10:42,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:42,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:10:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:10:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:10:42,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 26 [2024-10-13 12:10:42,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 12:10:42,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:42,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 26 [2024-10-13 12:10:42,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:42,208 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-10-13 12:10:42,208 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-13 12:10:42,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 31 events. 4/31 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 1 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 65. Up to 11 conditions per place. [2024-10-13 12:10:42,209 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 7 selfloop transitions, 2 changer transitions 5/24 dead transitions. [2024-10-13 12:10:42,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 110 flow [2024-10-13 12:10:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:10:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:10:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-10-13 12:10:42,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-10-13 12:10:42,211 INFO L175 Difference]: Start difference. First operand has 38 places, 22 transitions, 82 flow. Second operand 3 states and 50 transitions. [2024-10-13 12:10:42,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 110 flow [2024-10-13 12:10:42,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 98 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-10-13 12:10:42,213 INFO L231 Difference]: Finished difference. Result has 33 places, 18 transitions, 66 flow [2024-10-13 12:10:42,213 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=18} [2024-10-13 12:10:42,214 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-10-13 12:10:42,214 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 18 transitions, 66 flow [2024-10-13 12:10:42,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 12:10:42,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:10:42,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:10:42,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:10:42,215 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 12:10:42,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:10:42,216 INFO L85 PathProgramCache]: Analyzing trace with hash -552570962, now seen corresponding path program 2 times [2024-10-13 12:10:42,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:10:42,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880892421] [2024-10-13 12:10:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:10:42,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:10:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:10:42,322 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 12:10:42,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:10:42,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880892421] [2024-10-13 12:10:42,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880892421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:10:42,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:10:42,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:10:42,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22618109] [2024-10-13 12:10:42,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:10:42,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:10:42,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:10:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:10:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:10:42,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 26 [2024-10-13 12:10:42,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 18 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 12:10:42,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:10:42,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 26 [2024-10-13 12:10:42,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:10:42,353 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-10-13 12:10:42,353 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-13 12:10:42,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 11 events. 1/11 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 1 based on Foata normal form. 1/11 useless extension candidates. Maximal degree in co-relation 28. Up to 6 conditions per place. [2024-10-13 12:10:42,354 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2024-10-13 12:10:42,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 9 transitions, 43 flow [2024-10-13 12:10:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:10:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:10:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-10-13 12:10:42,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2024-10-13 12:10:42,358 INFO L175 Difference]: Start difference. First operand has 33 places, 18 transitions, 66 flow. Second operand 4 states and 58 transitions. [2024-10-13 12:10:42,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 9 transitions, 43 flow [2024-10-13 12:10:42,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 9 transitions, 37 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:10:42,360 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2024-10-13 12:10:42,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2024-10-13 12:10:42,360 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2024-10-13 12:10:42,361 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2024-10-13 12:10:42,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 12:10:42,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2024-10-13 12:10:42,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 3 remaining) [2024-10-13 12:10:42,365 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-13 12:10:42,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:10:42,365 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-10-13 12:10:42,372 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 12:10:42,372 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 12:10:42,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:10:42 BasicIcfg [2024-10-13 12:10:42,382 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 12:10:42,383 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 12:10:42,383 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 12:10:42,383 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 12:10:42,384 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:10:40" (3/4) ... [2024-10-13 12:10:42,386 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 12:10:42,389 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2024-10-13 12:10:42,393 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2024-10-13 12:10:42,394 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-10-13 12:10:42,394 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-13 12:10:42,394 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 12:10:42,496 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 12:10:42,497 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 12:10:42,497 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 12:10:42,498 INFO L158 Benchmark]: Toolchain (without parser) took 2680.30ms. Allocated memory is still 192.9MB. Free memory was 163.1MB in the beginning and 102.0MB in the end (delta: 61.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-10-13 12:10:42,498 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:10:42,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.11ms. Allocated memory is still 192.9MB. Free memory was 163.1MB in the beginning and 141.8MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 12:10:42,498 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.38ms. Allocated memory is still 192.9MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:10:42,499 INFO L158 Benchmark]: Boogie Preprocessor took 66.06ms. Allocated memory is still 192.9MB. Free memory was 139.7MB in the beginning and 137.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:10:42,499 INFO L158 Benchmark]: RCFGBuilder took 455.43ms. Allocated memory is still 192.9MB. Free memory was 137.6MB in the beginning and 117.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-13 12:10:42,499 INFO L158 Benchmark]: TraceAbstraction took 1383.87ms. Allocated memory is still 192.9MB. Free memory was 117.1MB in the beginning and 107.2MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-13 12:10:42,499 INFO L158 Benchmark]: Witness Printer took 114.25ms. Allocated memory is still 192.9MB. Free memory was 107.2MB in the beginning and 102.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 12:10:42,501 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.11ms. Allocated memory is still 192.9MB. Free memory was 163.1MB in the beginning and 141.8MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.38ms. Allocated memory is still 192.9MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.06ms. Allocated memory is still 192.9MB. Free memory was 139.7MB in the beginning and 137.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 455.43ms. Allocated memory is still 192.9MB. Free memory was 137.6MB in the beginning and 117.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1383.87ms. Allocated memory is still 192.9MB. Free memory was 117.1MB in the beginning and 107.2MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 114.25ms. Allocated memory is still 192.9MB. Free memory was 107.2MB in the beginning and 102.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 747]: 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: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 138 IncrementalHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 4 mSDtfsCounter, 138 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=1, InterpolantAutomatonStates: 18, 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 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 12:10:42,536 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