./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/lazy01.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/lazy01.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:06:49,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:06:49,648 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:06:49,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:06:49,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:06:49,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:06:49,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:06:49,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:06:49,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:06:49,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:06:49,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:06:49,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:06:49,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:06:49,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:06:49,693 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:06:49,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:06:49,694 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:06:49,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:06:49,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:06:49,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:06:49,695 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:06:49,699 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:06:49,700 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:06:49,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:06:49,700 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:06:49,700 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:06:49,700 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:06:49,701 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:06:49,701 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:06:49,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:06:49,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:06:49,702 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:06:49,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:06:49,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:06:49,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:06:49,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:06:49,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:06:49,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:06:49,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:06:49,708 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:06:49,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:06:49,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:06:49,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-10-13 12:06:49,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:06:50,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:06:50,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:06:50,008 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:06:50,008 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:06:50,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-10-13 12:06:51,460 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:06:51,714 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:06:51,714 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-10-13 12:06:51,730 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce7eb1e1c/f7d534ff5cc2455eadf35e43cb49b247/FLAGe3b69961f [2024-10-13 12:06:51,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce7eb1e1c/f7d534ff5cc2455eadf35e43cb49b247 [2024-10-13 12:06:51,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:06:51,747 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:06:51,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:06:51,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:06:51,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:06:51,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:51" (1/1) ... [2024-10-13 12:06:51,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d02c850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:51, skipping insertion in model container [2024-10-13 12:06:51,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:51" (1/1) ... [2024-10-13 12:06:51,806 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:06:52,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:06:52,244 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:06:52,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:06:52,351 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:06:52,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52 WrapperNode [2024-10-13 12:06:52,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:06:52,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:06:52,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:06:52,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:06:52,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,378 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,403 INFO L138 Inliner]: procedures = 169, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-10-13 12:06:52,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:06:52,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:06:52,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:06:52,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:06:52,417 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,420 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,446 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-13 12:06:52,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,465 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:06:52,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:06:52,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:06:52,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:06:52,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (1/1) ... [2024-10-13 12:06:52,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:06:52,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:06:52,526 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 12:06:52,528 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 12:06:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:06:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:06:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:06:52,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:06:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:06:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:06:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 12:06:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:06:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:06:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 12:06:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 12:06:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:06:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:06:52,568 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 12:06:52,697 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:06:52,699 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:06:52,843 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:06:52,844 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:06:52,988 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:06:52,988 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:06:52,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:06:52 BoogieIcfgContainer [2024-10-13 12:06:52,990 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:06:52,995 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:06:52,995 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:06:52,999 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:06:52,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:06:51" (1/3) ... [2024-10-13 12:06:53,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4042de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:06:52, skipping insertion in model container [2024-10-13 12:06:53,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:52" (2/3) ... [2024-10-13 12:06:53,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4042de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:06:53, skipping insertion in model container [2024-10-13 12:06:53,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:06:52" (3/3) ... [2024-10-13 12:06:53,002 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-10-13 12:06:53,020 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:06:53,020 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:06:53,020 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:06:53,068 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:06:53,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2024-10-13 12:06:53,136 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-10-13 12:06:53,136 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:06:53,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-10-13 12:06:53,141 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2024-10-13 12:06:53,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2024-10-13 12:06:53,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:06:53,162 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;@5ca7c406, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:06:53,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 12:06:53,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:06:53,174 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-13 12:06:53,174 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:06:53,174 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:53,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:53,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:06:53,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1771620510, now seen corresponding path program 1 times [2024-10-13 12:06:53,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:53,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766311340] [2024-10-13 12:06:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:53,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:53,511 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 12:06:53,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:53,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766311340] [2024-10-13 12:06:53,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766311340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:06:53,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:06:53,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:06:53,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430233966] [2024-10-13 12:06:53,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:06:53,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:06:53,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:06:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:06:53,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-13 12:06:53,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:53,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:53,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-13 12:06:53,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:53,898 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2024-10-13 12:06:53,898 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-10-13 12:06:53,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5388 event pairs, 178 based on Foata normal form. 95/1096 useless extension candidates. Maximal degree in co-relation 1849. Up to 827 conditions per place. [2024-10-13 12:06:53,914 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-10-13 12:06:53,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 178 flow [2024-10-13 12:06:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:06:53,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:06:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-13 12:06:53,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-10-13 12:06:53,931 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 73 transitions. [2024-10-13 12:06:53,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 178 flow [2024-10-13 12:06:53,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:06:53,939 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2024-10-13 12:06:53,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-10-13 12:06:53,946 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-10-13 12:06:53,946 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2024-10-13 12:06:53,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:53,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:53,947 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:53,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:06:53,948 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:06:53,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash -895038378, now seen corresponding path program 1 times [2024-10-13 12:06:53,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:53,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970015646] [2024-10-13 12:06:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:53,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:54,140 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 12:06:54,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:54,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970015646] [2024-10-13 12:06:54,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970015646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:06:54,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:06:54,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:06:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606533359] [2024-10-13 12:06:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:06:54,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:06:54,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:54,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:06:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:06:54,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-13 12:06:54,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:54,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:54,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-13 12:06:54,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:54,296 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2024-10-13 12:06:54,296 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-13 12:06:54,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3032 event pairs, 108 based on Foata normal form. 80/709 useless extension candidates. Maximal degree in co-relation 734. Up to 327 conditions per place. [2024-10-13 12:06:54,303 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-10-13 12:06:54,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 179 flow [2024-10-13 12:06:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:06:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:06:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-10-13 12:06:54,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-10-13 12:06:54,306 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 71 transitions. [2024-10-13 12:06:54,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 179 flow [2024-10-13 12:06:54,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:06:54,308 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2024-10-13 12:06:54,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-10-13 12:06:54,310 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-10-13 12:06:54,311 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2024-10-13 12:06:54,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:54,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:54,311 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:54,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:06:54,312 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:06:54,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1678654816, now seen corresponding path program 1 times [2024-10-13 12:06:54,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:54,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993351251] [2024-10-13 12:06:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:54,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:54,417 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 12:06:54,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:54,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993351251] [2024-10-13 12:06:54,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993351251] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:06:54,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:06:54,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:06:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327929159] [2024-10-13 12:06:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:06:54,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:06:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:06:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:06:54,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-13 12:06:54,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:54,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:54,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-13 12:06:54,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:54,566 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-10-13 12:06:54,567 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-13 12:06:54,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 607 events. 298/607 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2824 event pairs, 65 based on Foata normal form. 5/606 useless extension candidates. Maximal degree in co-relation 255. Up to 363 conditions per place. [2024-10-13 12:06:54,573 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-10-13 12:06:54,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 238 flow [2024-10-13 12:06:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:06:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:06:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-10-13 12:06:54,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-10-13 12:06:54,577 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 92 transitions. [2024-10-13 12:06:54,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 238 flow [2024-10-13 12:06:54,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:06:54,582 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2024-10-13 12:06:54,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-10-13 12:06:54,584 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-10-13 12:06:54,584 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2024-10-13 12:06:54,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:54,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:54,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:54,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:06:54,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:06:54,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2003875104, now seen corresponding path program 1 times [2024-10-13 12:06:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057714218] [2024-10-13 12:06:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:06:54,663 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 12:06:54,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:06:54,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057714218] [2024-10-13 12:06:54,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057714218] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:06:54,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:06:54,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:06:54,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951374053] [2024-10-13 12:06:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:06:54,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:06:54,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:06:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:06:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:06:54,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-10-13 12:06:54,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:54,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:06:54,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-10-13 12:06:54,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:06:54,817 INFO L124 PetriNetUnfolderBase]: 341/666 cut-off events. [2024-10-13 12:06:54,818 INFO L125 PetriNetUnfolderBase]: For 213/213 co-relation queries the response was YES. [2024-10-13 12:06:54,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 666 events. 341/666 cut-off events. For 213/213 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3000 event pairs, 91 based on Foata normal form. 4/666 useless extension candidates. Maximal degree in co-relation 508. Up to 316 conditions per place. [2024-10-13 12:06:54,823 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 43 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2024-10-13 12:06:54,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 261 flow [2024-10-13 12:06:54,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:06:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:06:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-10-13 12:06:54,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-10-13 12:06:54,825 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 94 transitions. [2024-10-13 12:06:54,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 261 flow [2024-10-13 12:06:54,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 253 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 12:06:54,828 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 121 flow [2024-10-13 12:06:54,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-10-13 12:06:54,831 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-10-13 12:06:54,832 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 121 flow [2024-10-13 12:06:54,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:06:54,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:06:54,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:06:54,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:06:54,833 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:06:54,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:06:54,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1657223266, now seen corresponding path program 1 times [2024-10-13 12:06:54,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:06:54,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487291689] [2024-10-13 12:06:54,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:06:54,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:06:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:06:54,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:06:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:06:54,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 12:06:54,910 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:06:54,911 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-10-13 12:06:54,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-13 12:06:54,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-13 12:06:54,912 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-10-13 12:06:54,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-10-13 12:06:54,913 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-10-13 12:06:54,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:06:54,913 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 12:06:54,964 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 12:06:54,964 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 12:06:54,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:06:54 BasicIcfg [2024-10-13 12:06:54,973 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 12:06:54,974 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 12:06:54,974 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 12:06:54,975 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 12:06:54,975 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:06:52" (3/4) ... [2024-10-13 12:06:54,977 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-13 12:06:54,978 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 12:06:54,980 INFO L158 Benchmark]: Toolchain (without parser) took 3232.26ms. Allocated memory is still 192.9MB. Free memory was 135.5MB in the beginning and 124.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2024-10-13 12:06:54,981 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:06:54,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 603.79ms. Allocated memory is still 192.9MB. Free memory was 135.1MB in the beginning and 157.4MB in the end (delta: -22.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 12:06:54,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.06ms. Allocated memory is still 192.9MB. Free memory was 157.4MB in the beginning and 155.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:06:54,981 INFO L158 Benchmark]: Boogie Preprocessor took 69.67ms. Allocated memory is still 192.9MB. Free memory was 155.3MB in the beginning and 153.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:06:54,982 INFO L158 Benchmark]: RCFGBuilder took 514.77ms. Allocated memory is still 192.9MB. Free memory was 153.2MB in the beginning and 129.2MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-13 12:06:54,982 INFO L158 Benchmark]: TraceAbstraction took 1978.29ms. Allocated memory is still 192.9MB. Free memory was 128.1MB in the beginning and 125.9MB in the end (delta: 2.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2024-10-13 12:06:54,982 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 192.9MB. Free memory was 125.9MB in the beginning and 124.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:06:54,986 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 51.3MB in the beginning and 51.2MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 603.79ms. Allocated memory is still 192.9MB. Free memory was 135.1MB in the beginning and 157.4MB in the end (delta: -22.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.06ms. Allocated memory is still 192.9MB. Free memory was 157.4MB in the beginning and 155.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.67ms. Allocated memory is still 192.9MB. Free memory was 155.3MB in the beginning and 153.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.77ms. Allocated memory is still 192.9MB. Free memory was 153.2MB in the beginning and 129.2MB in the end (delta: 24.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1978.29ms. Allocated memory is still 192.9MB. Free memory was 128.1MB in the beginning and 125.9MB in the end (delta: 2.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 192.9MB. Free memory was 125.9MB in the beginning and 124.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-1] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-1, t2=0] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-1, t2=0, t3=1] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 212 IncrementalHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 212 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-13 12:06:55,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/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/lazy01.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:06:57,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:06:57,468 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:06:57,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:06:57,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:06:57,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:06:57,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:06:57,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:06:57,512 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:06:57,513 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:06:57,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:06:57,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:06:57,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:06:57,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:06:57,515 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:06:57,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:06:57,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:06:57,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:06:57,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:06:57,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:06:57,521 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:06:57,521 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:06:57,521 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:06:57,522 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:06:57,522 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:06:57,522 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:06:57,523 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:06:57,523 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:06:57,524 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:06:57,524 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:06:57,524 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:06:57,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:06:57,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:06:57,534 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:06:57,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:06:57,535 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:06:57,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:06:57,536 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:06:57,536 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:06:57,537 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:06:57,537 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:06:57,537 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:06:57,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:06:57,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:06:57,538 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:06:57,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2024-10-13 12:06:57,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:06:57,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:06:57,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:06:57,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:06:57,889 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:06:57,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-10-13 12:06:59,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:06:59,708 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:06:59,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/lazy01.i [2024-10-13 12:06:59,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5d325ec/c9d77681959f4cd0b47de10fdd31e01e/FLAGf596d64c1 [2024-10-13 12:06:59,746 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5d325ec/c9d77681959f4cd0b47de10fdd31e01e [2024-10-13 12:06:59,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:06:59,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:06:59,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:06:59,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:06:59,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:06:59,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:59" (1/1) ... [2024-10-13 12:06:59,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32807c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:06:59, skipping insertion in model container [2024-10-13 12:06:59,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:06:59" (1/1) ... [2024-10-13 12:06:59,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:07:00,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:07:00,258 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:07:00,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:07:00,360 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:07:00,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00 WrapperNode [2024-10-13 12:07:00,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:07:00,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:07:00,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:07:00,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:07:00,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,422 INFO L138 Inliner]: procedures = 173, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2024-10-13 12:07:00,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:07:00,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:07:00,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:07:00,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:07:00,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,458 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-10-13 12:07:00,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:07:00,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:07:00,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:07:00,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:07:00,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (1/1) ... [2024-10-13 12:07:00,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:07:00,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:07:00,529 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 12:07:00,533 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 12:07:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:07:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:07:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:07:00,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:07:00,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-10-13 12:07:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 12:07:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:07:00,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:07:00,584 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 12:07:00,761 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:07:00,766 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:07:00,995 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:07:00,995 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:07:01,192 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:07:01,193 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 12:07:01,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:01 BoogieIcfgContainer [2024-10-13 12:07:01,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:07:01,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:07:01,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:07:01,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:07:01,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:06:59" (1/3) ... [2024-10-13 12:07:01,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554bf79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:07:01, skipping insertion in model container [2024-10-13 12:07:01,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:07:00" (2/3) ... [2024-10-13 12:07:01,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554bf79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:07:01, skipping insertion in model container [2024-10-13 12:07:01,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:01" (3/3) ... [2024-10-13 12:07:01,202 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-10-13 12:07:01,220 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:07:01,220 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:07:01,221 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:07:01,275 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:07:01,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 38 transitions, 97 flow [2024-10-13 12:07:01,347 INFO L124 PetriNetUnfolderBase]: 2/35 cut-off events. [2024-10-13 12:07:01,347 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:07:01,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 2/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-10-13 12:07:01,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 38 transitions, 97 flow [2024-10-13 12:07:01,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 34 transitions, 86 flow [2024-10-13 12:07:01,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:07:01,377 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;@658a6749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:07:01,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 12:07:01,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:07:01,388 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-13 12:07:01,388 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 12:07:01,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:07:01,390 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:07:01,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:07:01,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:07:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash -252257762, now seen corresponding path program 1 times [2024-10-13 12:07:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:07:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167668082] [2024-10-13 12:07:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:07:01,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:01,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:07:01,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:07:01,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-13 12:07:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:07:01,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 12:07:01,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:07:01,598 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 12:07:01,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:07:01,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:07:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167668082] [2024-10-13 12:07:01,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167668082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:07:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:07:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:07:01,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760260445] [2024-10-13 12:07:01,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:07:01,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:07:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:07:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:07:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:07:01,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-13 12:07:01,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:01,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:07:01,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-13 12:07:01,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:07:01,965 INFO L124 PetriNetUnfolderBase]: 588/1023 cut-off events. [2024-10-13 12:07:01,965 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-10-13 12:07:01,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1023 events. 588/1023 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5390 event pairs, 178 based on Foata normal form. 95/1096 useless extension candidates. Maximal degree in co-relation 1849. Up to 827 conditions per place. [2024-10-13 12:07:01,983 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 31 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-10-13 12:07:01,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 178 flow [2024-10-13 12:07:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:07:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:07:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-10-13 12:07:01,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-10-13 12:07:01,996 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 86 flow. Second operand 3 states and 73 transitions. [2024-10-13 12:07:01,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 178 flow [2024-10-13 12:07:02,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 162 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:07:02,004 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 87 flow [2024-10-13 12:07:02,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-10-13 12:07:02,012 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2024-10-13 12:07:02,012 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 87 flow [2024-10-13 12:07:02,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:02,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:07:02,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:07:02,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-13 12:07:02,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:02,215 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:07:02,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:07:02,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1501736296, now seen corresponding path program 1 times [2024-10-13 12:07:02,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:07:02,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336300122] [2024-10-13 12:07:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:07:02,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:02,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:07:02,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:07:02,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-13 12:07:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:07:02,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:07:02,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:07:02,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-13 12:07:02,382 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 12:07:02,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:07:02,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:07:02,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336300122] [2024-10-13 12:07:02,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336300122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:07:02,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:07:02,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:07:02,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712780733] [2024-10-13 12:07:02,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:07:02,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:07:02,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:07:02,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:07:02,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:07:02,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-13 12:07:02,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:02,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:07:02,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-13 12:07:02,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:07:02,561 INFO L124 PetriNetUnfolderBase]: 303/636 cut-off events. [2024-10-13 12:07:02,561 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-13 12:07:02,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 636 events. 303/636 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3033 event pairs, 108 based on Foata normal form. 80/709 useless extension candidates. Maximal degree in co-relation 734. Up to 327 conditions per place. [2024-10-13 12:07:02,568 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-10-13 12:07:02,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 179 flow [2024-10-13 12:07:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:07:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:07:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-10-13 12:07:02,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-10-13 12:07:02,570 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 87 flow. Second operand 3 states and 71 transitions. [2024-10-13 12:07:02,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 179 flow [2024-10-13 12:07:02,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:07:02,575 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 96 flow [2024-10-13 12:07:02,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-10-13 12:07:02,576 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-10-13 12:07:02,577 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 96 flow [2024-10-13 12:07:02,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:02,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:07:02,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:07:02,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:07:02,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:02,780 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:07:02,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:07:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash 50888544, now seen corresponding path program 1 times [2024-10-13 12:07:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:07:02,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195496495] [2024-10-13 12:07:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:07:02,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:02,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:07:02,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:07:02,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-13 12:07:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:07:02,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:07:02,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:07:02,947 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 12:07:02,948 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:07:02,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:07:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195496495] [2024-10-13 12:07:02,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195496495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:07:02,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:07:02,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:07:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160092571] [2024-10-13 12:07:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:07:02,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:07:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:07:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:07:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:07:02,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-13 12:07:02,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:02,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:07:02,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-13 12:07:02,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:07:03,148 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-10-13 12:07:03,149 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-10-13 12:07:03,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 607 events. 298/607 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2839 event pairs, 65 based on Foata normal form. 5/606 useless extension candidates. Maximal degree in co-relation 255. Up to 363 conditions per place. [2024-10-13 12:07:03,154 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 39 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2024-10-13 12:07:03,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 238 flow [2024-10-13 12:07:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:07:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:07:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-10-13 12:07:03,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-10-13 12:07:03,156 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 96 flow. Second operand 4 states and 92 transitions. [2024-10-13 12:07:03,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 238 flow [2024-10-13 12:07:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 225 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:07:03,159 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 102 flow [2024-10-13 12:07:03,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-10-13 12:07:03,160 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-10-13 12:07:03,160 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 102 flow [2024-10-13 12:07:03,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:03,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:07:03,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:07:03,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-13 12:07:03,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:03,362 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:07:03,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:07:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash 376108832, now seen corresponding path program 1 times [2024-10-13 12:07:03,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:07:03,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146056902] [2024-10-13 12:07:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:07:03,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:03,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:07:03,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:07:03,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-13 12:07:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:07:03,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:07:03,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:07:03,474 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 12:07:03,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:07:03,475 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:07:03,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146056902] [2024-10-13 12:07:03,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146056902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:07:03,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:07:03,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:07:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201107678] [2024-10-13 12:07:03,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:07:03,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:07:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:07:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:07:03,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:07:03,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-10-13 12:07:03,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:03,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:07:03,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-10-13 12:07:03,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:07:03,641 INFO L124 PetriNetUnfolderBase]: 294/567 cut-off events. [2024-10-13 12:07:03,642 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-10-13 12:07:03,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 567 events. 294/567 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2527 event pairs, 100 based on Foata normal form. 4/561 useless extension candidates. Maximal degree in co-relation 491. Up to 381 conditions per place. [2024-10-13 12:07:03,646 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 38 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-10-13 12:07:03,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 232 flow [2024-10-13 12:07:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:07:03,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:07:03,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-13 12:07:03,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5986842105263158 [2024-10-13 12:07:03,648 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 102 flow. Second operand 4 states and 91 transitions. [2024-10-13 12:07:03,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 232 flow [2024-10-13 12:07:03,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 224 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 12:07:03,651 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 106 flow [2024-10-13 12:07:03,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-10-13 12:07:03,652 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2024-10-13 12:07:03,652 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 106 flow [2024-10-13 12:07:03,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:07:03,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:07:03,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:07:03,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-13 12:07:03,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:03,857 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-13 12:07:03,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:07:03,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1764660510, now seen corresponding path program 1 times [2024-10-13 12:07:03,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:07:03,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579265976] [2024-10-13 12:07:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:07:03,859 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:03,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:07:03,861 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:07:03,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-13 12:07:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:07:03,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 12:07:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 12:07:04,021 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-13 12:07:04,022 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 12:07:04,025 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-10-13 12:07:04,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-13 12:07:04,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-13 12:07:04,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-10-13 12:07:04,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-10-13 12:07:04,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-10-13 12:07:04,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-13 12:07:04,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:07:04,234 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 12:07:04,269 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 12:07:04,270 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 12:07:04,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:07:04 BasicIcfg [2024-10-13 12:07:04,275 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 12:07:04,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 12:07:04,276 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 12:07:04,277 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 12:07:04,277 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:07:01" (3/4) ... [2024-10-13 12:07:04,279 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-13 12:07:04,280 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 12:07:04,281 INFO L158 Benchmark]: Toolchain (without parser) took 4530.37ms. Allocated memory was 65.0MB in the beginning and 111.1MB in the end (delta: 46.1MB). Free memory was 43.5MB in the beginning and 50.5MB in the end (delta: -7.0MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2024-10-13 12:07:04,281 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 44.0MB. Free memory was 27.3MB in the beginning and 27.2MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:07:04,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 605.70ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 37.0MB in the end (delta: 6.3MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2024-10-13 12:07:04,282 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.50ms. Allocated memory is still 65.0MB. Free memory was 37.0MB in the beginning and 35.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:07:04,283 INFO L158 Benchmark]: Boogie Preprocessor took 65.08ms. Allocated memory is still 65.0MB. Free memory was 35.0MB in the beginning and 32.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 12:07:04,283 INFO L158 Benchmark]: RCFGBuilder took 702.86ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 32.7MB in the beginning and 43.4MB in the end (delta: -10.7MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-10-13 12:07:04,284 INFO L158 Benchmark]: TraceAbstraction took 3080.00ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 42.7MB in the beginning and 51.6MB in the end (delta: -8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-13 12:07:04,284 INFO L158 Benchmark]: Witness Printer took 4.01ms. Allocated memory is still 111.1MB. Free memory was 51.6MB in the beginning and 50.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:07:04,287 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 44.0MB. Free memory was 27.3MB in the beginning and 27.2MB in the end (delta: 78.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 605.70ms. Allocated memory is still 65.0MB. Free memory was 43.3MB in the beginning and 37.0MB in the end (delta: 6.3MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.50ms. Allocated memory is still 65.0MB. Free memory was 37.0MB in the beginning and 35.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.08ms. Allocated memory is still 65.0MB. Free memory was 35.0MB in the beginning and 32.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 702.86ms. Allocated memory was 65.0MB in the beginning and 92.3MB in the end (delta: 27.3MB). Free memory was 32.7MB in the beginning and 43.4MB in the end (delta: -10.7MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3080.00ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 42.7MB in the beginning and 51.6MB in the end (delta: -8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Witness Printer took 4.01ms. Allocated memory is still 111.1MB. Free memory was 51.6MB in the beginning and 50.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data=0, mutex={3:0}, t1=-1] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-1, t2=0] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=0, mutex={3:0}, t1=-1, t2=0, t3=1] [L707] 1 data++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1 mSDtfsCounter, 256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-13 12:07:04,316 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: UNKNOWN: Overapproximated counterexample