./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 99ed96823339177f4b28b0a0221ff3b8974326d60720caa85a4327ad217da198 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:26:18,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:26:18,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-29 11:26:18,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:26:18,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:26:18,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:26:18,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:26:18,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:26:18,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:26:18,768 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:26:18,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:26:18,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:26:18,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:26:18,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:26:18,769 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:26:18,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:26:18,769 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:26:18,770 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:26:18,771 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:26:18,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:18,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:18,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:18,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:18,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:26:18,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:18,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:26:18,772 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99ed96823339177f4b28b0a0221ff3b8974326d60720caa85a4327ad217da198 [2025-04-29 11:26:18,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:26:18,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:26:18,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:26:18,983 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:26:18,983 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:26:18,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.c [2025-04-29 11:26:20,323 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc3ef7c3/c68e5dc0032b4cc9890e26f78dba0466/FLAG8ac3eb7e5 [2025-04-29 11:26:20,552 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:26:20,553 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.c [2025-04-29 11:26:20,574 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:20,574 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:20,587 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc3ef7c3/c68e5dc0032b4cc9890e26f78dba0466/FLAG8ac3eb7e5 [2025-04-29 11:26:21,325 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdc3ef7c3/c68e5dc0032b4cc9890e26f78dba0466 [2025-04-29 11:26:21,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:26:21,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:26:21,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:21,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:26:21,332 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:26:21,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b37eb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21, skipping insertion in model container [2025-04-29 11:26:21,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,345 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:26:21,503 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:21,510 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:26:21,536 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:21,550 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:26:21,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21 WrapperNode [2025-04-29 11:26:21,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:21,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:21,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:26:21,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:26:21,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,579 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-04-29 11:26:21,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:21,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:26:21,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:26:21,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:26:21,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,602 INFO L175 MemorySlicer]: Split 2 memory accesses to 2 slices as follows [1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1]. The 0 writes are split as follows [0, 0]. [2025-04-29 11:26:21,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,606 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,611 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:26:21,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:26:21,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:26:21,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:26:21,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (1/1) ... [2025-04-29 11:26:21,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:21,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:26:21,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-29 11:26:21,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-29 11:26:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-29 11:26:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-29 11:26:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-29 11:26:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-29 11:26:21,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-29 11:26:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-29 11:26:21,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-29 11:26:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-29 11:26:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-29 11:26:21,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:26:21,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:26:21,665 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 11:26:21,732 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:26:21,734 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:26:21,857 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:26:21,857 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:26:21,922 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:26:21,923 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:26:21,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:21 BoogieIcfgContainer [2025-04-29 11:26:21,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:26:21,925 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:26:21,925 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:26:21,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:26:21,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:26:21" (1/3) ... [2025-04-29 11:26:21,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e51875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:21, skipping insertion in model container [2025-04-29 11:26:21,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:21" (2/3) ... [2025-04-29 11:26:21,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e51875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:21, skipping insertion in model container [2025-04-29 11:26:21,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:21" (3/3) ... [2025-04-29 11:26:21,932 INFO L128 eAbstractionObserver]: Analyzing ICFG stateful01-1.c [2025-04-29 11:26:21,943 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:26:21,944 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stateful01-1.c that has 3 procedures, 31 locations, 28 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-29 11:26:21,944 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:26:21,983 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-04-29 11:26:22,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 74 flow [2025-04-29 11:26:22,036 INFO L116 PetriNetUnfolderBase]: 0/28 cut-off events. [2025-04-29 11:26:22,041 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-29 11:26:22,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 0/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-29 11:26:22,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 74 flow [2025-04-29 11:26:22,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2025-04-29 11:26:22,052 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:26:22,064 INFO L340 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;@3e9d1cfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:26:22,065 INFO L341 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-04-29 11:26:22,080 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:26:22,080 INFO L116 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-04-29 11:26:22,080 INFO L117 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-04-29 11:26:22,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:22,081 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:22,081 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-04-29 11:26:22,085 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:22,085 INFO L85 PathProgramCache]: Analyzing trace with hash 242442184, now seen corresponding path program 1 times [2025-04-29 11:26:22,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:26:22,091 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807720168] [2025-04-29 11:26:22,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:22,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:26:22,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-04-29 11:26:22,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-04-29 11:26:22,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:22,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:26:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:26:22,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:26:22,283 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807720168] [2025-04-29 11:26:22,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807720168] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:26:22,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:26:22,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-29 11:26:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202600047] [2025-04-29 11:26:22,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:26:22,291 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:26:22,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:26:22,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:26:22,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:26:22,319 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2025-04-29 11:26:22,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:22,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:26:22,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2025-04-29 11:26:22,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:26:22,435 INFO L116 PetriNetUnfolderBase]: 182/356 cut-off events. [2025-04-29 11:26:22,435 INFO L117 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2025-04-29 11:26:22,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 356 events. 182/356 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1332 event pairs, 182 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 671. Up to 337 conditions per place. [2025-04-29 11:26:22,440 INFO L140 encePairwiseOnDemand]: 28/30 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2025-04-29 11:26:22,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 108 flow [2025-04-29 11:26:22,441 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:26:22,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:26:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-04-29 11:26:22,450 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2025-04-29 11:26:22,451 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 66 flow. Second operand 3 states and 41 transitions. [2025-04-29 11:26:22,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 108 flow [2025-04-29 11:26:22,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-04-29 11:26:22,457 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2025-04-29 11:26:22,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2025-04-29 11:26:22,461 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2025-04-29 11:26:22,461 INFO L485 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2025-04-29 11:26:22,461 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:22,462 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 3 remaining) [2025-04-29 11:26:22,463 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-04-29 11:26:22,463 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-04-29 11:26:22,463 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:26:22,463 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-29 11:26:22,467 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:26:22,467 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:26:22,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:26:22 BasicIcfg [2025-04-29 11:26:22,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:26:22,470 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:26:22,470 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:26:22,471 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:26:22,471 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:21" (3/4) ... [2025-04-29 11:26:22,472 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:26:22,474 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-04-29 11:26:22,474 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-04-29 11:26:22,478 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2025-04-29 11:26:22,478 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-04-29 11:26:22,478 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-04-29 11:26:22,478 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-29 11:26:22,527 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:26:22,527 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:26:22,527 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:26:22,528 INFO L158 Benchmark]: Toolchain (without parser) took 1200.22ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 91.3MB in the end (delta: 15.0MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2025-04-29 11:26:22,528 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:22,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.43ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 92.3MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:26:22,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.54ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 91.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:22,529 INFO L158 Benchmark]: Boogie Preprocessor took 34.72ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 89.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:22,529 INFO L158 Benchmark]: RCFGBuilder took 305.56ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 69.4MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:26:22,530 INFO L158 Benchmark]: TraceAbstraction took 545.43ms. Allocated memory is still 142.6MB. Free memory was 68.3MB in the beginning and 96.8MB in the end (delta: -28.4MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2025-04-29 11:26:22,530 INFO L158 Benchmark]: Witness Printer took 56.64ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 91.3MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:26:22,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.43ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 92.3MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.54ms. Allocated memory is still 142.6MB. Free memory was 92.3MB in the beginning and 91.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.72ms. Allocated memory is still 142.6MB. Free memory was 91.3MB in the beginning and 89.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 305.56ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 69.4MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 545.43ms. Allocated memory is still 142.6MB. Free memory was 68.3MB in the beginning and 96.8MB in the end (delta: -28.4MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * Witness Printer took 56.64ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 91.3MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 52 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 11:26:22,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE