./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/singleton.i --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.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:46:20,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:46:20,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-30 10:46:20,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:46:20,686 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:46:20,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:46:20,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:46:20,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:46:20,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:46:20,710 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:46:20,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:46:20,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:46:20,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:46:20,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:46:20,710 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:46:20,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:46:20,712 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:46:20,712 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:46:20,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:46:20,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:46:20,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:46:20,713 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 -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2025-04-30 10:46:20,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:46:20,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:46:20,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:46:20,922 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:46:20,923 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:46:20,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2025-04-30 10:46:22,189 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4252bac22/7d91efed3b1d4f10a1b5ec0079fd9fb0/FLAG2fec88935 [2025-04-30 10:46:22,451 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:46:22,451 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2025-04-30 10:46:22,473 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4252bac22/7d91efed3b1d4f10a1b5ec0079fd9fb0/FLAG2fec88935 [2025-04-30 10:46:23,191 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4252bac22/7d91efed3b1d4f10a1b5ec0079fd9fb0 [2025-04-30 10:46:23,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:46:23,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:46:23,197 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:46:23,197 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:46:23,200 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:46:23,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54668859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23, skipping insertion in model container [2025-04-30 10:46:23,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:46:23,525 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:46:23,531 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:46:23,591 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:46:23,643 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:46:23,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23 WrapperNode [2025-04-30 10:46:23,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:46:23,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:46:23,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:46:23,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:46:23,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,661 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,673 INFO L138 Inliner]: procedures = 323, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 30 [2025-04-30 10:46:23,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:46:23,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:46:23,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:46:23,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:46:23,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,692 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-30 10:46:23,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,696 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:46:23,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:46:23,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:46:23,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:46:23,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (1/1) ... [2025-04-30 10:46:23,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:46:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:23,734 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) [2025-04-30 10:46:23,745 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 [2025-04-30 10:46:23,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-04-30 10:46:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-30 10:46:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-30 10:46:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-30 10:46:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-30 10:46:23,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:46:23,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:46:23,765 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-30 10:46:23,903 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:46:23,906 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:46:24,055 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:46:24,055 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:46:24,117 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:46:24,118 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:46:24,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:24 BoogieIcfgContainer [2025-04-30 10:46:24,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:46:24,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:46:24,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:46:24,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:46:24,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:46:23" (1/3) ... [2025-04-30 10:46:24,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271599ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:46:24, skipping insertion in model container [2025-04-30 10:46:24,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:23" (2/3) ... [2025-04-30 10:46:24,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271599ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:46:24, skipping insertion in model container [2025-04-30 10:46:24,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:24" (3/3) ... [2025-04-30 10:46:24,127 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.i [2025-04-30 10:46:24,137 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:46:24,139 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.i that has 5 procedures, 49 locations, 46 edges, 1 initial locations, 0 loop locations, and 8 error locations. [2025-04-30 10:46:24,139 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:46:24,207 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-04-30 10:46:24,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 89 transitions, 275 flow [2025-04-30 10:46:24,268 INFO L116 PetriNetUnfolderBase]: 7/61 cut-off events. [2025-04-30 10:46:24,271 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-30 10:46:24,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 61 events. 7/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2025-04-30 10:46:24,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 89 transitions, 275 flow [2025-04-30 10:46:24,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 60 transitions, 171 flow [2025-04-30 10:46:24,284 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:46:24,293 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;@7c1af0bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:46:24,293 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2025-04-30 10:46:24,301 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:46:24,303 INFO L116 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-04-30 10:46:24,303 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-30 10:46:24,303 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:24,304 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:46:24,304 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-04-30 10:46:24,308 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1940866222, now seen corresponding path program 1 times [2025-04-30 10:46:24,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:46:24,313 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706020874] [2025-04-30 10:46:24,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:24,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:46:24,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:46:24,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:46:24,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:24,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:46:24,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:46:24,535 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706020874] [2025-04-30 10:46:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706020874] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:46:24,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:46:24,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:46:24,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099182902] [2025-04-30 10:46:24,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:46:24,544 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:46:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:46:24,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:46:24,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:46:24,580 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-04-30 10:46:24,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:24,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:24,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-04-30 10:46:24,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:25,157 INFO L116 PetriNetUnfolderBase]: 4535/6221 cut-off events. [2025-04-30 10:46:25,158 INFO L117 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2025-04-30 10:46:25,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13008 conditions, 6221 events. 4535/6221 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32333 event pairs, 3591 based on Foata normal form. 2/4549 useless extension candidates. Maximal degree in co-relation 12980. Up to 6076 conditions per place. [2025-04-30 10:46:25,241 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 44 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2025-04-30 10:46:25,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 249 flow [2025-04-30 10:46:25,245 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:46:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:46:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-04-30 10:46:25,253 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3992673992673993 [2025-04-30 10:46:25,255 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 171 flow. Second operand 3 states and 109 transitions. [2025-04-30 10:46:25,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 249 flow [2025-04-30 10:46:25,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-30 10:46:25,270 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 123 flow [2025-04-30 10:46:25,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-04-30 10:46:25,274 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -16 predicate places. [2025-04-30 10:46:25,276 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 123 flow [2025-04-30 10:46:25,276 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:25,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:25,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:46:25,276 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:46:25,277 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-04-30 10:46:25,277 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1497010483, now seen corresponding path program 1 times [2025-04-30 10:46:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:46:25,278 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303406315] [2025-04-30 10:46:25,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:25,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:46:25,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:46:25,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:46:25,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:25,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:46:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:46:25,391 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303406315] [2025-04-30 10:46:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303406315] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:46:25,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:46:25,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:46:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045406881] [2025-04-30 10:46:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:46:25,392 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:46:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:46:25,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:46:25,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:46:25,396 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-04-30 10:46:25,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:25,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:25,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-04-30 10:46:25,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:25,570 INFO L116 PetriNetUnfolderBase]: 1484/2125 cut-off events. [2025-04-30 10:46:25,570 INFO L117 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-04-30 10:46:25,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 2125 events. 1484/2125 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9317 event pairs, 1115 based on Foata normal form. 0/1983 useless extension candidates. Maximal degree in co-relation 2395. Up to 2055 conditions per place. [2025-04-30 10:46:25,576 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 40 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-04-30 10:46:25,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 199 flow [2025-04-30 10:46:25,577 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:46:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:46:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-04-30 10:46:25,578 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3772893772893773 [2025-04-30 10:46:25,578 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 123 flow. Second operand 3 states and 103 transitions. [2025-04-30 10:46:25,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 199 flow [2025-04-30 10:46:25,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:46:25,579 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 114 flow [2025-04-30 10:46:25,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=114, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2025-04-30 10:46:25,580 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -20 predicate places. [2025-04-30 10:46:25,580 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 114 flow [2025-04-30 10:46:25,580 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:25,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:25,580 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, 1, 1] [2025-04-30 10:46:25,580 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:46:25,580 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-04-30 10:46:25,581 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1773545337, now seen corresponding path program 1 times [2025-04-30 10:46:25,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:46:25,581 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241246758] [2025-04-30 10:46:25,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:25,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:46:25,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-30 10:46:25,605 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-30 10:46:25,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:25,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:46:25,606 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-30 10:46:25,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-30 10:46:25,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-30 10:46:25,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:25,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:46:25,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-30 10:46:25,660 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-30 10:46:25,661 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 27 remaining) [2025-04-30 10:46:25,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 27 remaining) [2025-04-30 10:46:25,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2025-04-30 10:46:25,664 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (14 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2025-04-30 10:46:25,665 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2025-04-30 10:46:25,666 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2025-04-30 10:46:25,666 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2025-04-30 10:46:25,667 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2025-04-30 10:46:25,667 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:46:25,667 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-30 10:46:25,752 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-30 10:46:25,752 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:46:25,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:46:25 BasicIcfg [2025-04-30 10:46:25,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:46:25,758 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:46:25,758 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:46:25,758 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:46:25,759 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:24" (3/4) ... [2025-04-30 10:46:25,760 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-30 10:46:25,761 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:46:25,761 INFO L158 Benchmark]: Toolchain (without parser) took 2565.34ms. Allocated memory is still 201.3MB. Free memory was 153.4MB in the beginning and 84.7MB in the end (delta: 68.6MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2025-04-30 10:46:25,762 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 201.3MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:25,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.08ms. Allocated memory is still 201.3MB. Free memory was 153.4MB in the beginning and 117.9MB in the end (delta: 35.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:46:25,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.70ms. Allocated memory is still 201.3MB. Free memory was 117.9MB in the beginning and 115.9MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:46:25,762 INFO L158 Benchmark]: Boogie Preprocessor took 28.29ms. Allocated memory is still 201.3MB. Free memory was 115.9MB in the beginning and 113.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:25,763 INFO L158 Benchmark]: RCFGBuilder took 413.41ms. Allocated memory is still 201.3MB. Free memory was 113.6MB in the beginning and 90.7MB in the end (delta: 22.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:46:25,763 INFO L158 Benchmark]: TraceAbstraction took 1637.37ms. Allocated memory is still 201.3MB. Free memory was 90.0MB in the beginning and 84.8MB in the end (delta: 5.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2025-04-30 10:46:25,763 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 201.3MB. Free memory was 84.8MB in the beginning and 84.7MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:25,764 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 201.3MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.08ms. Allocated memory is still 201.3MB. Free memory was 153.4MB in the beginning and 117.9MB in the end (delta: 35.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.70ms. Allocated memory is still 201.3MB. Free memory was 117.9MB in the beginning and 115.9MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.29ms. Allocated memory is still 201.3MB. Free memory was 115.9MB in the beginning and 113.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 413.41ms. Allocated memory is still 201.3MB. Free memory was 113.6MB in the beginning and 90.7MB in the end (delta: 22.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1637.37ms. Allocated memory is still 201.3MB. Free memory was 90.0MB in the beginning and 84.8MB in the end (delta: 5.2MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 201.3MB. Free memory was 84.8MB in the beginning and 84.7MB in the end (delta: 46.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1159]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1159. Possible FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\at(arg, Pre)={0:0}, t=-5, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] 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}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] 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}] [L1149] 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}] [L1133] 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}] [L1150] 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}] [L1140] 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}] [L1135] 3 return 0; [L1151] 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}] [L1133] 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}] [L1142] 4 return 0; [L1152] 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}] [L1133] 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}] [L1135] 5 return 0; [L1135] 6 return 0; [L1153] 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}] [L1154] 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}] [L1155] 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}] [L1156] 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}] [L1157] 1 return 0; [L1163] 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}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND FALSE 0 !(!expression) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(expression, Pre)=1, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={-3:0}] [L1164] RET 0 __VERIFIER_assert(v[0] == 'X') [L1165] 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: 1147]: 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: 1150]: 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: 1151]: 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: 1152]: 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: 1149]: 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: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1162]: 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: 1151]: 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: 1152]: 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: 1147]: 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: 1149]: 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: 1150]: 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, 105 locations, 128 edges, 27 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: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 3 mSDtfsCounter, 105 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=171occurred 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, 0.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 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 [2025-04-30 10:46:25,779 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.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:46:27,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:46:27,870 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-04-30 10:46:27,876 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:46:27,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:46:27,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:46:27,900 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:46:27,900 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:46:27,900 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:46:27,901 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:46:27,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:46:27,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:46:27,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:46:27,901 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:46:27,901 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:46:27,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:46:27,902 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:46:27,903 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:46:27,904 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:46:27,904 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:46:27,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:46:27,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:46:27,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:46:27,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:46:27,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:46:27,905 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:46:27,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:46:27,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:46:27,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:46:27,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:46:27,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:46:27,905 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-30 10:46:27,905 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-30 10:46:27,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:46:27,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:46:27,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:46:27,906 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 -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2025-04-30 10:46:28,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:46:28,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:46:28,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:46:28,161 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:46:28,161 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:46:28,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton.i [2025-04-30 10:46:29,404 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62042b53d/9eb8e0172ebe426c8201ca944ce495a9/FLAG233c18404 [2025-04-30 10:46:29,667 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:46:29,669 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton.i [2025-04-30 10:46:29,685 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62042b53d/9eb8e0172ebe426c8201ca944ce495a9/FLAG233c18404 [2025-04-30 10:46:30,456 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62042b53d/9eb8e0172ebe426c8201ca944ce495a9 [2025-04-30 10:46:30,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:46:30,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:46:30,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:46:30,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:46:30,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:46:30,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:30,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76090c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30, skipping insertion in model container [2025-04-30 10:46:30,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:30,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:46:30,846 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:46:30,858 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:46:30,907 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:46:30,961 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:46:30,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30 WrapperNode [2025-04-30 10:46:30,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:46:30,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:46:30,963 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:46:30,963 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:46:30,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:30,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,000 INFO L138 Inliner]: procedures = 324, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2025-04-30 10:46:31,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:46:31,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:46:31,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:46:31,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:46:31,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,031 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-04-30 10:46:31,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,037 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:46:31,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:46:31,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:46:31,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:46:31,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (1/1) ... [2025-04-30 10:46:31,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:46:31,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:31,073 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) [2025-04-30 10:46:31,078 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 [2025-04-30 10:46:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-04-30 10:46:31,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-04-30 10:46:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-30 10:46:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2025-04-30 10:46:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2025-04-30 10:46:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-04-30 10:46:31,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-04-30 10:46:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-30 10:46:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-04-30 10:46:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-04-30 10:46:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-30 10:46:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-30 10:46:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-30 10:46:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-30 10:46:31,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-30 10:46:31,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-30 10:46:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-30 10:46:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-30 10:46:31,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:46:31,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:46:31,099 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-30 10:46:31,200 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:46:31,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:46:31,381 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:46:31,381 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:46:31,474 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:46:31,476 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:46:31,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:31 BoogieIcfgContainer [2025-04-30 10:46:31,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:46:31,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:46:31,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:46:31,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:46:31,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:46:30" (1/3) ... [2025-04-30 10:46:31,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cc951c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:46:31, skipping insertion in model container [2025-04-30 10:46:31,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:30" (2/3) ... [2025-04-30 10:46:31,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49cc951c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:46:31, skipping insertion in model container [2025-04-30 10:46:31,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:31" (3/3) ... [2025-04-30 10:46:31,483 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.i [2025-04-30 10:46:31,492 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:46:31,494 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.i that has 5 procedures, 49 locations, 46 edges, 1 initial locations, 0 loop locations, and 8 error locations. [2025-04-30 10:46:31,494 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:46:31,587 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-04-30 10:46:31,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 89 transitions, 275 flow [2025-04-30 10:46:31,642 INFO L116 PetriNetUnfolderBase]: 7/61 cut-off events. [2025-04-30 10:46:31,645 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-30 10:46:31,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 61 events. 7/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2025-04-30 10:46:31,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 89 transitions, 275 flow [2025-04-30 10:46:31,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 60 transitions, 171 flow [2025-04-30 10:46:31,658 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:46:31,664 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;@35c81802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:46:31,664 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2025-04-30 10:46:31,668 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:46:31,670 INFO L116 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-04-30 10:46:31,670 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-30 10:46:31,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:31,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:46:31,671 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-04-30 10:46:31,675 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -785033228, now seen corresponding path program 1 times [2025-04-30 10:46:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-30 10:46:31,683 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533210015] [2025-04-30 10:46:31,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:31,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:46:31,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:31,686 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) [2025-04-30 10:46:31,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-30 10:46:31,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:46:31,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:46:31,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:31,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:31,785 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-04-30 10:46:31,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:46:31,848 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 [2025-04-30 10:46:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:46:31,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-30 10:46:31,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-30 10:46:31,875 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533210015] [2025-04-30 10:46:31,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533210015] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:46:31,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:46:31,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:46:31,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921401979] [2025-04-30 10:46:31,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:46:31,883 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:46:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-30 10:46:31,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:46:31,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:46:31,914 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-04-30 10:46:31,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:31,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:31,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-04-30 10:46:31,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:32,573 INFO L116 PetriNetUnfolderBase]: 4535/6221 cut-off events. [2025-04-30 10:46:32,574 INFO L117 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2025-04-30 10:46:32,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13008 conditions, 6221 events. 4535/6221 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32289 event pairs, 3591 based on Foata normal form. 2/4651 useless extension candidates. Maximal degree in co-relation 12980. Up to 6076 conditions per place. [2025-04-30 10:46:32,628 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 44 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2025-04-30 10:46:32,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 249 flow [2025-04-30 10:46:32,630 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:46:32,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:46:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-04-30 10:46:32,639 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3992673992673993 [2025-04-30 10:46:32,640 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 171 flow. Second operand 3 states and 109 transitions. [2025-04-30 10:46:32,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 249 flow [2025-04-30 10:46:32,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-30 10:46:32,657 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 123 flow [2025-04-30 10:46:32,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-04-30 10:46:32,662 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -16 predicate places. [2025-04-30 10:46:32,663 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 123 flow [2025-04-30 10:46:32,664 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:32,664 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:32,664 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:46:32,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-30 10:46:32,868 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 [2025-04-30 10:46:32,868 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-04-30 10:46:32,868 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash -785033227, now seen corresponding path program 1 times [2025-04-30 10:46:32,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-30 10:46:32,869 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695322413] [2025-04-30 10:46:32,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:32,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:46:32,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:32,871 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) [2025-04-30 10:46:32,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-30 10:46:32,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-04-30 10:46:32,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-04-30 10:46:32,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:32,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:32,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-30 10:46:32,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-30 10:46:32,963 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 [2025-04-30 10:46:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:46:33,001 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-30 10:46:33,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-04-30 10:46:33,002 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695322413] [2025-04-30 10:46:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695322413] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:46:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:46:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:46:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905451821] [2025-04-30 10:46:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:46:33,003 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:46:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-04-30 10:46:33,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:46:33,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:46:33,008 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-04-30 10:46:33,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:33,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:33,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-04-30 10:46:33,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:33,240 INFO L116 PetriNetUnfolderBase]: 1484/2125 cut-off events. [2025-04-30 10:46:33,240 INFO L117 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-04-30 10:46:33,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 2125 events. 1484/2125 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9277 event pairs, 1115 based on Foata normal form. 0/2023 useless extension candidates. Maximal degree in co-relation 2395. Up to 2055 conditions per place. [2025-04-30 10:46:33,247 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 40 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-04-30 10:46:33,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 199 flow [2025-04-30 10:46:33,248 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:46:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:46:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-04-30 10:46:33,249 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.3772893772893773 [2025-04-30 10:46:33,249 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 123 flow. Second operand 3 states and 103 transitions. [2025-04-30 10:46:33,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 199 flow [2025-04-30 10:46:33,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-30 10:46:33,250 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 114 flow [2025-04-30 10:46:33,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=114, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2025-04-30 10:46:33,250 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -20 predicate places. [2025-04-30 10:46:33,250 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 114 flow [2025-04-30 10:46:33,251 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2025-04-30 10:46:33,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:33,251 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, 1, 1] [2025-04-30 10:46:33,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-30 10:46:33,451 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 [2025-04-30 10:46:33,451 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-04-30 10:46:33,452 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:33,452 INFO L85 PathProgramCache]: Analyzing trace with hash -775710905, now seen corresponding path program 1 times [2025-04-30 10:46:33,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-30 10:46:33,452 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830784243] [2025-04-30 10:46:33,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:33,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:46:33,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:33,456 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) [2025-04-30 10:46:33,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-30 10:46:33,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-30 10:46:33,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-30 10:46:33,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:33,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:46:33,570 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-30 10:46:33,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-04-30 10:46:33,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-04-30 10:46:33,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:33,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:46:33,658 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-04-30 10:46:33,658 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-30 10:46:33,658 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (14 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2025-04-30 10:46:33,660 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork1Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2025-04-30 10:46:33,663 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2025-04-30 10:46:33,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-30 10:46:33,863 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 [2025-04-30 10:46:33,864 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-30 10:46:33,933 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-30 10:46:33,933 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:46:33,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:46:33 BasicIcfg [2025-04-30 10:46:33,938 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:46:33,938 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:46:33,938 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:46:33,939 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:46:33,939 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:31" (3/4) ... [2025-04-30 10:46:33,940 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-30 10:46:33,941 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:46:33,942 INFO L158 Benchmark]: Toolchain (without parser) took 3480.77ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 91.0MB in the beginning and 115.4MB in the end (delta: -24.4MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. [2025-04-30 10:46:33,943 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 46.9MB in the beginning and 46.7MB in the end (delta: 196.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:33,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.34ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 54.7MB in the end (delta: 36.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-30 10:46:33,944 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.77ms. Allocated memory is still 117.4MB. Free memory was 54.7MB in the beginning and 52.2MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:46:33,945 INFO L158 Benchmark]: Boogie Preprocessor took 48.87ms. Allocated memory is still 117.4MB. Free memory was 52.2MB in the beginning and 49.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:33,945 INFO L158 Benchmark]: RCFGBuilder took 426.96ms. Allocated memory is still 117.4MB. Free memory was 49.9MB in the beginning and 71.8MB in the end (delta: -21.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2025-04-30 10:46:33,945 INFO L158 Benchmark]: TraceAbstraction took 2460.12ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 71.1MB in the beginning and 115.5MB in the end (delta: -44.3MB). Peak memory consumption was 73.0MB. Max. memory is 16.1GB. [2025-04-30 10:46:33,946 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 234.9MB. Free memory was 115.5MB in the beginning and 115.4MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:33,947 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 46.9MB in the beginning and 46.7MB in the end (delta: 196.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 497.34ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 54.7MB in the end (delta: 36.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.77ms. Allocated memory is still 117.4MB. Free memory was 54.7MB in the beginning and 52.2MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.87ms. Allocated memory is still 117.4MB. Free memory was 52.2MB in the beginning and 49.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 426.96ms. Allocated memory is still 117.4MB. Free memory was 49.9MB in the beginning and 71.8MB in the end (delta: -21.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2460.12ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 71.1MB in the beginning and 115.5MB in the end (delta: -44.3MB). Peak memory consumption was 73.0MB. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 234.9MB. Free memory was 115.5MB in the beginning and 115.4MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1159]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1159. Possible FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\at(arg, Pre)={0:0}, t=-5, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] 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}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] 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={4:0}] [L1149] 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={4:0}] [L1133] 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={4:0}] [L1150] 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={4:0}] [L1140] 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={4:0}] [L1135] 3 return 0; [L1151] 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={4:0}] [L1133] 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={4:0}] [L1142] 4 return 0; [L1152] 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={4:0}] [L1133] 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={4:0}] [L1135] 5 return 0; [L1153] 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={4:0}] [L1154] 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={4:0}] [L1155] 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={4:0}] [L1156] 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={4:0}] [L1157] 1 return 0; [L1163] 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={4:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND FALSE 0 !(!expression) VAL [\at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(arg, Pre)={0:0}, \at(expression, Pre)=1, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1164] RET 0 __VERIFIER_assert(v[0] == 'X') [L1165] 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={4:0}] - UnprovableResult [Line: 1147]: 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: 1150]: 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: 1151]: 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: 1152]: 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: 1149]: 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: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1162]: 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: 1150]: 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: 1151]: 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: 1152]: 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: 1147]: 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: 1149]: 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, 105 locations, 128 edges, 27 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: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 3 mSDtfsCounter, 105 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=171occurred 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, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 0 NumberOfNonLiveVariables, 122 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 [2025-04-30 10:46:33,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample