./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/singleton.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/singleton.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 6346bdbbbcc061ee75d47350028706e13f6c2c30639c308c7c0aecc3d7202d6c --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:26:15,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:26:15,194 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-29 11:26:15,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:26:15,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:26:15,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:26:15,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:26:15,224 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:26:15,224 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:26:15,224 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:26:15,225 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:26:15,225 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:26:15,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:26:15,226 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:26:15,226 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:26:15,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:26:15,226 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:26:15,227 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:26:15,227 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:15,228 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:15,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:15,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:26:15,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:26:15,229 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:26:15,229 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:26:15,229 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:26:15,229 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:26:15,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:26:15,229 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 -> 6346bdbbbcc061ee75d47350028706e13f6c2c30639c308c7c0aecc3d7202d6c [2025-04-29 11:26:15,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:26:15,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:26:15,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:26:15,469 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:26:15,470 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:26:15,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.c [2025-04-29 11:26:16,718 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173da4c1b/1d35b5599c2540eab7f5089be21f954e/FLAG0b57889bd [2025-04-29 11:26:16,949 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:26:16,949 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.c [2025-04-29 11:26:16,950 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:16,950 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:16,950 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:16,950 WARN L117 ultiparseSymbolTable]: System include string.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:16,956 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173da4c1b/1d35b5599c2540eab7f5089be21f954e/FLAG0b57889bd [2025-04-29 11:26:17,768 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173da4c1b/1d35b5599c2540eab7f5089be21f954e [2025-04-29 11:26:17,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:26:17,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:26:17,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:17,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:26:17,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:26:17,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:17,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f983dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17, skipping insertion in model container [2025-04-29 11:26:17,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:17,787 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:26:17,944 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:17,953 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:26:17,985 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:17,997 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:26:17,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17 WrapperNode [2025-04-29 11:26:17,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:17,998 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:17,998 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:26:17,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:26:18,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,027 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 25 [2025-04-29 11:26:18,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:18,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:26:18,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:26:18,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:26:18,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,041 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,057 INFO L175 MemorySlicer]: Split 3 memory accesses to 1 slices as follows [3]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-04-29 11:26:18,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,061 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:26:18,070 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:26:18,070 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:26:18,070 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:26:18,071 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (1/1) ... [2025-04-29 11:26:18,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:18,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:26:18,095 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 11:26:18,098 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 11:26:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-04-29 11:26:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-04-29 11:26:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-29 11:26:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-29 11:26:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-29 11:26:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-29 11:26:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-29 11:26:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-29 11:26:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:26:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-29 11:26:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-29 11:26:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:26:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:26:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:26:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:26:18,118 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 11:26:18,190 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:26:18,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:26:18,315 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:26:18,315 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:26:18,399 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:26:18,400 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:26:18,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:18 BoogieIcfgContainer [2025-04-29 11:26:18,401 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:26:18,402 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:26:18,402 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:26:18,405 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:26:18,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:26:17" (1/3) ... [2025-04-29 11:26:18,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaa69df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:18, skipping insertion in model container [2025-04-29 11:26:18,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:17" (2/3) ... [2025-04-29 11:26:18,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eaa69df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:18, skipping insertion in model container [2025-04-29 11:26:18,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:18" (3/3) ... [2025-04-29 11:26:18,407 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.c [2025-04-29 11:26:18,416 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:26:18,418 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.c that has 5 procedures, 43 locations, 38 edges, 1 initial locations, 0 loop locations, and 7 error locations. [2025-04-29 11:26:18,418 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:26:18,487 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-04-29 11:26:18,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 259 flow [2025-04-29 11:26:18,543 INFO L116 PetriNetUnfolderBase]: 5/53 cut-off events. [2025-04-29 11:26:18,546 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-29 11:26:18,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 53 events. 5/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2025-04-29 11:26:18,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 81 transitions, 259 flow [2025-04-29 11:26:18,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 52 transitions, 155 flow [2025-04-29 11:26:18,558 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:26:18,569 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;@121b3146, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:26:18,570 INFO L341 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-04-29 11:26:18,576 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:26:18,578 INFO L116 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-04-29 11:26:18,578 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-29 11:26:18,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:18,579 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:18,580 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 23 more)] === [2025-04-29 11:26:18,584 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash 899682291, now seen corresponding path program 1 times [2025-04-29 11:26:18,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:26:18,590 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321113868] [2025-04-29 11:26:18,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:18,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:26:18,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:26:18,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:26:18,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:18,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:26:18,862 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 11:26:18,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:26:18,863 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321113868] [2025-04-29 11:26:18,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321113868] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:26:18,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:26:18,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:26:18,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867734005] [2025-04-29 11:26:18,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:26:18,872 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:26:18,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:26:18,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:26:18,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:26:18,912 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 83 [2025-04-29 11:26:18,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:18,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:26:18,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 83 [2025-04-29 11:26:18,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:26:19,599 INFO L116 PetriNetUnfolderBase]: 4535/6216 cut-off events. [2025-04-29 11:26:19,599 INFO L117 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2025-04-29 11:26:19,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13001 conditions, 6216 events. 4535/6216 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32263 event pairs, 3591 based on Foata normal form. 0/4550 useless extension candidates. Maximal degree in co-relation 12980. Up to 6074 conditions per place. [2025-04-29 11:26:19,647 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 42 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-04-29 11:26:19,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 49 transitions, 235 flow [2025-04-29 11:26:19,648 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:26:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:26:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-04-29 11:26:19,658 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3855421686746988 [2025-04-29 11:26:19,660 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 155 flow. Second operand 3 states and 96 transitions. [2025-04-29 11:26:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 49 transitions, 235 flow [2025-04-29 11:26:19,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 201 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-29 11:26:19,676 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 113 flow [2025-04-29 11:26:19,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2025-04-29 11:26:19,682 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -15 predicate places. [2025-04-29 11:26:19,683 INFO L485 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 113 flow [2025-04-29 11:26:19,683 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:19,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:19,684 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:19,684 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:26:19,684 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 23 more)] === [2025-04-29 11:26:19,685 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash 42591700, now seen corresponding path program 1 times [2025-04-29 11:26:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:26:19,686 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330529062] [2025-04-29 11:26:19,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:26:19,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:26:19,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:26:19,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:19,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:26:19,807 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 11:26:19,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:26:19,807 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330529062] [2025-04-29 11:26:19,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330529062] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:26:19,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:26:19,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:26:19,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606743303] [2025-04-29 11:26:19,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:26:19,808 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:26:19,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:26:19,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:26:19,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:26:19,815 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 83 [2025-04-29 11:26:19,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:19,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:26:19,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 83 [2025-04-29 11:26:19,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:26:20,001 INFO L116 PetriNetUnfolderBase]: 1484/2120 cut-off events. [2025-04-29 11:26:20,002 INFO L117 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-04-29 11:26:20,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 2120 events. 1484/2120 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9293 event pairs, 1115 based on Foata normal form. 0/1984 useless extension candidates. Maximal degree in co-relation 2395. Up to 2053 conditions per place. [2025-04-29 11:26:20,010 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2025-04-29 11:26:20,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 185 flow [2025-04-29 11:26:20,011 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:26:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:26:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-04-29 11:26:20,012 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.36947791164658633 [2025-04-29 11:26:20,012 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 113 flow. Second operand 3 states and 92 transitions. [2025-04-29 11:26:20,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 185 flow [2025-04-29 11:26:20,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:26:20,013 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 104 flow [2025-04-29 11:26:20,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2025-04-29 11:26:20,014 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2025-04-29 11:26:20,014 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 104 flow [2025-04-29 11:26:20,014 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:20,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:20,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:20,014 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:26:20,014 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 23 more)] === [2025-04-29 11:26:20,015 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash 222986797, now seen corresponding path program 1 times [2025-04-29 11:26:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:26:20,015 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880711243] [2025-04-29 11:26:20,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:26:20,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-29 11:26:20,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-29 11:26:20,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:20,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:26:20,050 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:26:20,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-29 11:26:20,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-29 11:26:20,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:20,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:26:20,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:26:20,104 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:26:20,105 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2025-04-29 11:26:20,106 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2025-04-29 11:26:20,107 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2025-04-29 11:26:20,108 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2025-04-29 11:26:20,108 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2025-04-29 11:26:20,108 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:26:20,108 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-29 11:26:20,182 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:26:20,183 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:26:20,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:26:20 BasicIcfg [2025-04-29 11:26:20,186 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:26:20,187 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:26:20,187 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:26:20,187 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:26:20,188 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:18" (3/4) ... [2025-04-29 11:26:20,189 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-29 11:26:20,190 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:26:20,191 INFO L158 Benchmark]: Toolchain (without parser) took 2419.71ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 122.1MB in the beginning and 213.7MB in the end (delta: -91.6MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2025-04-29 11:26:20,191 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:20,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.02ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 107.7MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:26:20,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.81ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:20,192 INFO L158 Benchmark]: Boogie Preprocessor took 40.69ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 104.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:20,193 INFO L158 Benchmark]: RCFGBuilder took 330.75ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 83.9MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:26:20,193 INFO L158 Benchmark]: TraceAbstraction took 1784.60ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 83.5MB in the beginning and 213.8MB in the end (delta: -130.3MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2025-04-29 11:26:20,193 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 293.6MB. Free memory was 213.8MB in the beginning and 213.7MB in the end (delta: 32.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:20,194 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 118.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.02ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 107.7MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.81ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.69ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 104.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.75ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 83.9MB in the end (delta: 20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1784.60ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 83.5MB in the beginning and 213.8MB in the end (delta: -130.3MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 293.6MB. Free memory was 213.8MB in the beginning and 213.7MB in the end (delta: 32.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 63]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 63. Possible FailurePath: [L21] 0 char *v; [L65] 0 pthread_t t; [L67] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\at(arg, Pre)={0:0}, t=-5, v={0:0}] [L47] 1 pthread_t t1, t2, t3, t4, t5; [L49] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, arg={0:0}, t1=-4, v={0:0}] [L25] 2 v = malloc(sizeof(char)) [L26] 2 return 0; [L50] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, v={-3:0}] [L51] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={-3:0}] [L32] 3 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={-3:0}] [L52] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={-3:0}] [L40] 4 v[0] = 'Y' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={-3:0}] [L34] 3 return 0; [L53] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={-3:0}] [L32] 5 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={-3:0}] [L42] 4 return 0; [L54] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-3:0}] [L32] 6 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-3:0}] [L34] 5 return 0; [L55] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-3:0}] [L56] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-3:0}] [L57] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-3:0}] [L58] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-3:0}] [L60] 1 return 0; [L68] FCALL, JOIN 1 pthread_join(t, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={-3:0}] [L70] EXPR 0 v[0] [L70] CALL 0 __VERIFIER_assert(v[0] == 'X') [L19] COND FALSE 0 !(!expression) [L70] RET 0 __VERIFIER_assert(v[0] == 'X') [L72] 0 return 0; VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={-3:0}] - UnprovableResult [Line: 53]: 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: 49]: 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: 54]: 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: 52]: 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: 51]: 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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 67]: 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: 49]: 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: 51]: 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: 52]: 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: 53]: 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: 54]: 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 11 procedures, 99 locations, 120 edges, 26 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 2 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-29 11:26:20,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/singleton.c -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 6346bdbbbcc061ee75d47350028706e13f6c2c30639c308c7c0aecc3d7202d6c --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:26:21,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:26:22,025 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-04-29 11:26:22,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:26:22,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:26:22,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:26:22,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:26:22,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:26:22,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:26:22,050 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:26:22,050 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:26:22,050 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:26:22,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:26:22,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:26:22,050 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:26:22,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:26:22,050 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 11:26:22,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:26:22,051 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:26:22,052 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:22,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:22,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-29 11:26:22,052 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-29 11:26:22,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:26:22,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:26:22,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:26:22,053 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 -> 6346bdbbbcc061ee75d47350028706e13f6c2c30639c308c7c0aecc3d7202d6c [2025-04-29 11:26:22,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:26:22,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:26:22,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:26:22,260 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:26:22,260 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:26:22,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.c [2025-04-29 11:26:23,555 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb7a8460/a45e6ec1254a4e00a6e96f738f69605e/FLAGfc956f281 [2025-04-29 11:26:23,719 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:26:23,721 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.c [2025-04-29 11:26:23,722 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:23,722 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:23,723 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:23,723 WARN L117 ultiparseSymbolTable]: System include string.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:26:23,727 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb7a8460/a45e6ec1254a4e00a6e96f738f69605e/FLAGfc956f281 [2025-04-29 11:26:24,605 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efb7a8460/a45e6ec1254a4e00a6e96f738f69605e [2025-04-29 11:26:24,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:26:24,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:26:24,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:24,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:26:24,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:26:24,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44c21a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24, skipping insertion in model container [2025-04-29 11:26:24,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,623 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:26:24,760 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:24,768 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:26:24,788 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:26:24,802 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:26:24,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24 WrapperNode [2025-04-29 11:26:24,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:26:24,803 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:24,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:26:24,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:26:24,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,831 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 25 [2025-04-29 11:26:24,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:26:24,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:26:24,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:26:24,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:26:24,838 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,857 INFO L175 MemorySlicer]: Split 3 memory accesses to 1 slices as follows [3]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-04-29 11:26:24,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,867 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:26:24,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:26:24,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:26:24,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:26:24,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (1/1) ... [2025-04-29 11:26:24,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:26:24,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:26:24,909 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 11:26:24,914 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 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-04-29 11:26:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-29 11:26:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-29 11:26:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-29 11:26:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:26:24,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:26:24,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2025-04-29 11:26:24,931 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 11:26:25,001 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:26:25,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:26:25,139 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 11:26:25,139 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:26:25,240 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:26:25,240 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:26:25,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:25 BoogieIcfgContainer [2025-04-29 11:26:25,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:26:25,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:26:25,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:26:25,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:26:25,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:26:24" (1/3) ... [2025-04-29 11:26:25,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6321bf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:25, skipping insertion in model container [2025-04-29 11:26:25,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:26:24" (2/3) ... [2025-04-29 11:26:25,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6321bf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:26:25, skipping insertion in model container [2025-04-29 11:26:25,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:25" (3/3) ... [2025-04-29 11:26:25,251 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.c [2025-04-29 11:26:25,261 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:26:25,262 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.c that has 5 procedures, 43 locations, 38 edges, 1 initial locations, 0 loop locations, and 7 error locations. [2025-04-29 11:26:25,262 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 11:26:25,333 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-04-29 11:26:25,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 81 transitions, 259 flow [2025-04-29 11:26:25,387 INFO L116 PetriNetUnfolderBase]: 5/53 cut-off events. [2025-04-29 11:26:25,389 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-29 11:26:25,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 53 events. 5/53 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 65. Up to 3 conditions per place. [2025-04-29 11:26:25,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 81 transitions, 259 flow [2025-04-29 11:26:25,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 52 transitions, 155 flow [2025-04-29 11:26:25,399 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:26:25,408 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;@726b5bd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:26:25,409 INFO L341 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2025-04-29 11:26:25,417 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 11:26:25,417 INFO L116 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-04-29 11:26:25,417 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-29 11:26:25,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:25,418 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:25,419 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 23 more)] === [2025-04-29 11:26:25,423 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash 899682291, now seen corresponding path program 1 times [2025-04-29 11:26:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-29 11:26:25,431 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104646720] [2025-04-29 11:26:25,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:25,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:26:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:26:25,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:26:25,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-29 11:26:25,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:26:25,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:26:25,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:25,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:26:25,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-29 11:26:25,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:26:25,554 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2025-04-29 11:26:25,577 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 11:26:25,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:26:25,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-29 11:26:25,579 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104646720] [2025-04-29 11:26:25,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104646720] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:26:25,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:26:25,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:26:25,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503986925] [2025-04-29 11:26:25,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:26:25,587 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:26:25,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-29 11:26:25,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:26:25,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:26:25,626 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 83 [2025-04-29 11:26:25,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:25,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:26:25,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 83 [2025-04-29 11:26:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:26:26,323 INFO L116 PetriNetUnfolderBase]: 4535/6216 cut-off events. [2025-04-29 11:26:26,323 INFO L117 PetriNetUnfolderBase]: For 358/358 co-relation queries the response was YES. [2025-04-29 11:26:26,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13001 conditions, 6216 events. 4535/6216 cut-off events. For 358/358 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32263 event pairs, 3591 based on Foata normal form. 0/4550 useless extension candidates. Maximal degree in co-relation 12980. Up to 6074 conditions per place. [2025-04-29 11:26:26,368 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 42 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-04-29 11:26:26,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 49 transitions, 235 flow [2025-04-29 11:26:26,370 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:26:26,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:26:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2025-04-29 11:26:26,380 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3855421686746988 [2025-04-29 11:26:26,381 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 155 flow. Second operand 3 states and 96 transitions. [2025-04-29 11:26:26,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 49 transitions, 235 flow [2025-04-29 11:26:26,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 201 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-29 11:26:26,407 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 113 flow [2025-04-29 11:26:26,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2025-04-29 11:26:26,412 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -15 predicate places. [2025-04-29 11:26:26,413 INFO L485 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 113 flow [2025-04-29 11:26:26,413 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:26,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:26,413 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:26,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-29 11:26:26,614 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:26:26,614 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 23 more)] === [2025-04-29 11:26:26,615 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:26,615 INFO L85 PathProgramCache]: Analyzing trace with hash 42591700, now seen corresponding path program 1 times [2025-04-29 11:26:26,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-29 11:26:26,615 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050884778] [2025-04-29 11:26:26,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:26,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:26:26,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:26:26,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:26:26,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-29 11:26:26,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-29 11:26:26,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-29 11:26:26,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:26,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:26:26,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-29 11:26:26,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:26:26,692 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-04-29 11:26:26,720 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 11:26:26,720 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:26:26,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-29 11:26:26,720 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050884778] [2025-04-29 11:26:26,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050884778] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:26:26,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:26:26,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:26:26,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937544039] [2025-04-29 11:26:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:26:26,721 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:26:26,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-29 11:26:26,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:26:26,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:26:26,726 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 83 [2025-04-29 11:26:26,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:26,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 11:26:26,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 83 [2025-04-29 11:26:26,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 11:26:26,931 INFO L116 PetriNetUnfolderBase]: 1484/2120 cut-off events. [2025-04-29 11:26:26,932 INFO L117 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-04-29 11:26:26,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4275 conditions, 2120 events. 1484/2120 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9293 event pairs, 1115 based on Foata normal form. 0/1984 useless extension candidates. Maximal degree in co-relation 2395. Up to 2053 conditions per place. [2025-04-29 11:26:26,940 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2025-04-29 11:26:26,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 185 flow [2025-04-29 11:26:26,942 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:26:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 11:26:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2025-04-29 11:26:26,947 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.36947791164658633 [2025-04-29 11:26:26,947 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 113 flow. Second operand 3 states and 92 transitions. [2025-04-29 11:26:26,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 185 flow [2025-04-29 11:26:26,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 11:26:26,948 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 104 flow [2025-04-29 11:26:26,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2025-04-29 11:26:26,949 INFO L279 CegarLoopForPetriNet]: 66 programPoint places, -19 predicate places. [2025-04-29 11:26:26,949 INFO L485 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 104 flow [2025-04-29 11:26:26,949 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:26:26,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 11:26:26,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:26:26,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-04-29 11:26:27,154 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:26:27,154 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 23 more)] === [2025-04-29 11:26:27,155 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:26:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 222986797, now seen corresponding path program 1 times [2025-04-29 11:26:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-29 11:26:27,155 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440715323] [2025-04-29 11:26:27,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:26:27,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:26:27,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:26:27,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:26:27,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-29 11:26:27,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-29 11:26:27,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-29 11:26:27,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:27,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:26:27,250 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:26:27,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-04-29 11:26:27,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-04-29 11:26:27,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:26:27,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:26:27,332 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-04-29 11:26:27,333 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:26:27,334 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2025-04-29 11:26:27,335 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 26 remaining) [2025-04-29 11:26:27,335 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 26 remaining) [2025-04-29 11:26:27,335 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 26 remaining) [2025-04-29 11:26:27,335 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2025-04-29 11:26:27,336 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork5Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2025-04-29 11:26:27,337 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 26 remaining) [2025-04-29 11:26:27,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-29 11:26:27,538 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:26:27,538 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-29 11:26:27,608 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 11:26:27,609 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:26:27,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:26:27 BasicIcfg [2025-04-29 11:26:27,613 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:26:27,614 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:26:27,614 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:26:27,614 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:26:27,614 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:26:25" (3/4) ... [2025-04-29 11:26:27,615 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-29 11:26:27,616 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:26:27,616 INFO L158 Benchmark]: Toolchain (without parser) took 3008.47ms. Allocated memory was 83.9MB in the beginning and 159.4MB in the end (delta: 75.5MB). Free memory was 59.9MB in the beginning and 49.7MB in the end (delta: 10.2MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. [2025-04-29 11:26:27,618 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:27,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.22ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 45.4MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:26:27,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.36ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 43.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:27,618 INFO L158 Benchmark]: Boogie Preprocessor took 47.81ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 41.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:27,619 INFO L158 Benchmark]: RCFGBuilder took 360.04ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 55.1MB in the end (delta: -13.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2025-04-29 11:26:27,619 INFO L158 Benchmark]: TraceAbstraction took 2370.00ms. Allocated memory was 83.9MB in the beginning and 159.4MB in the end (delta: 75.5MB). Free memory was 54.5MB in the beginning and 49.7MB in the end (delta: 4.9MB). Peak memory consumption was 81.1MB. Max. memory is 16.1GB. [2025-04-29 11:26:27,619 INFO L158 Benchmark]: Witness Printer took 2.40ms. Allocated memory is still 159.4MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 9.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:26:27,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.22ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 45.4MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.36ms. Allocated memory is still 83.9MB. Free memory was 45.4MB in the beginning and 43.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.81ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 41.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 360.04ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 55.1MB in the end (delta: -13.1MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2370.00ms. Allocated memory was 83.9MB in the beginning and 159.4MB in the end (delta: 75.5MB). Free memory was 54.5MB in the beginning and 49.7MB in the end (delta: 4.9MB). Peak memory consumption was 81.1MB. Max. memory is 16.1GB. * Witness Printer took 2.40ms. Allocated memory is still 159.4MB. Free memory was 49.7MB in the beginning and 49.7MB in the end (delta: 9.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 63]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 63. Possible FailurePath: [L21] 0 char *v; [L65] 0 pthread_t t; [L67] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\at(arg, Pre)={0:0}, t=-5, v={0:0}] [L47] 1 pthread_t t1, t2, t3, t4, t5; [L49] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, arg={0:0}, t1=-4, v={0:0}] [L25] 2 v = malloc(sizeof(char)) [L26] 2 return 0; [L50] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, v={2:0}] [L51] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={2:0}] [L32] 3 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={2:0}] [L52] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={2:0}] [L40] 4 v[0] = 'Y' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={2:0}] [L34] 3 return 0; [L53] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={2:0}] [L32] 5 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={2:0}] [L42] 4 return 0; [L54] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={2:0}] [L32] 6 v[0] = 'X' VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={2:0}] [L34] 5 return 0; [L55] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={2:0}] [L56] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={2:0}] [L57] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={2:0}] [L58] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={2:0}] [L60] 1 return 0; [L68] FCALL, JOIN 1 pthread_join(t, 0) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={2:0}] [L70] EXPR 0 v[0] [L70] CALL 0 __VERIFIER_assert(v[0] == 'X') [L19] COND FALSE 0 !(!expression) [L70] RET 0 __VERIFIER_assert(v[0] == 'X') [L72] 0 return 0; VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \result=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={2:0}] - UnprovableResult [Line: 53]: 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: 49]: 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: 54]: 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: 52]: 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: 51]: 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: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 67]: 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: 49]: 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: 51]: 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: 52]: 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: 53]: 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: 54]: 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 11 procedures, 99 locations, 120 edges, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-29 11:26:27,633 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