./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-memsafety/fillarray.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-memsafety/fillarray.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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:45:59,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:45:59,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-30 10:45:59,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:45:59,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:45:59,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:45:59,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:45:59,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:45:59,482 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:45:59,482 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:45:59,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:45:59,483 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:45:59,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:45:59,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:45:59,483 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:45:59,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:45:59,484 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:45:59,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:45:59,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:45:59,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:45:59,484 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:45:59,484 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:45:59,484 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:45:59,485 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:45:59,485 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:45:59,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:45:59,486 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:45:59,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:45:59,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:45:59,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:45:59,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:45:59,487 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 -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2025-04-30 10:45:59,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:45:59,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:45:59,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:45:59,715 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:45:59,716 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:45:59,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-memsafety/fillarray.i [2025-04-30 10:46:00,990 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcab5518/c82711061c684cf6b53974385e8bdac3/FLAGf09f84e0a [2025-04-30 10:46:01,283 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:46:01,284 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-memsafety/fillarray.i [2025-04-30 10:46:01,293 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcab5518/c82711061c684cf6b53974385e8bdac3/FLAGf09f84e0a [2025-04-30 10:46:02,040 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dcab5518/c82711061c684cf6b53974385e8bdac3 [2025-04-30 10:46:02,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:46:02,043 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:46:02,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:46:02,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:46:02,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:46:02,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99a9190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02, skipping insertion in model container [2025-04-30 10:46:02,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:46:02,420 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-30 10:46:02,427 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-30 10:46:02,433 WARN L1150 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-04-30 10:46:02,438 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:46:02,446 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:46:02,490 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:46:02,528 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:46:02,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02 WrapperNode [2025-04-30 10:46:02,528 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:46:02,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:46:02,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:46:02,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:46:02,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,564 INFO L138 Inliner]: procedures = 261, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2025-04-30 10:46:02,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:46:02,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:46:02,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:46:02,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:46:02,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,593 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-04-30 10:46:02,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,600 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:46:02,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:46:02,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:46:02,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:46:02,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (1/1) ... [2025-04-30 10:46:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:46:02,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:46:02,639 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 10:46:02,643 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 10:46:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-04-30 10:46:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-04-30 10:46:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-04-30 10:46:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-04-30 10:46:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-30 10:46:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-30 10:46:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-30 10:46:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:46:02,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:46:02,666 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 10:46:02,772 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:46:02,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:46:02,914 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-30 10:46:02,914 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:46:02,999 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:46:03,001 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:46:03,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:03 BoogieIcfgContainer [2025-04-30 10:46:03,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:46:03,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:46:03,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:46:03,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:46:03,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:46:02" (1/3) ... [2025-04-30 10:46:03,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39995909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:46:03, skipping insertion in model container [2025-04-30 10:46:03,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:46:02" (2/3) ... [2025-04-30 10:46:03,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39995909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:46:03, skipping insertion in model container [2025-04-30 10:46:03,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:03" (3/3) ... [2025-04-30 10:46:03,009 INFO L128 eAbstractionObserver]: Analyzing ICFG fillarray.i [2025-04-30 10:46:03,019 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:46:03,020 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fillarray.i that has 3 procedures, 27 locations, 27 edges, 1 initial locations, 2 loop locations, and 8 error locations. [2025-04-30 10:46:03,020 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-30 10:46:03,066 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-30 10:46:03,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2025-04-30 10:46:03,111 INFO L116 PetriNetUnfolderBase]: 2/29 cut-off events. [2025-04-30 10:46:03,112 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:46:03,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 2/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 54 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-04-30 10:46:03,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2025-04-30 10:46:03,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 60 flow [2025-04-30 10:46:03,123 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:46:03,131 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;@a9ef7de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:46:03,132 INFO L341 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-04-30 10:46:03,134 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-30 10:46:03,134 INFO L116 PetriNetUnfolderBase]: 0/4 cut-off events. [2025-04-30 10:46:03,134 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-30 10:46:03,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:03,135 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-04-30 10:46:03,135 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-04-30 10:46:03,138 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 186650, now seen corresponding path program 1 times [2025-04-30 10:46:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:46:03,143 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105304276] [2025-04-30 10:46:03,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:46:03,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-30 10:46:03,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-30 10:46:03,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:03,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:46:03,257 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 10:46:03,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:46:03,257 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105304276] [2025-04-30 10:46:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105304276] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:46:03,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:46:03,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-04-30 10:46:03,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671185553] [2025-04-30 10:46:03,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:46:03,265 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:46:03,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:46:03,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:46:03,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:46:03,299 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 29 [2025-04-30 10:46:03,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 10:46:03,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-30 10:46:03,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 29 [2025-04-30 10:46:03,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-30 10:46:03,410 INFO L116 PetriNetUnfolderBase]: 126/268 cut-off events. [2025-04-30 10:46:03,411 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-30 10:46:03,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 268 events. 126/268 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1132 event pairs, 87 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 469. Up to 161 conditions per place. [2025-04-30 10:46:03,416 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 18 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2025-04-30 10:46:03,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 120 flow [2025-04-30 10:46:03,418 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:46:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-30 10:46:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2025-04-30 10:46:03,425 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2025-04-30 10:46:03,426 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 3 states and 63 transitions. [2025-04-30 10:46:03,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 120 flow [2025-04-30 10:46:03,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-30 10:46:03,430 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 67 flow [2025-04-30 10:46:03,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2025-04-30 10:46:03,434 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2025-04-30 10:46:03,434 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 67 flow [2025-04-30 10:46:03,435 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 10:46:03,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-30 10:46:03,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-30 10:46:03,435 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:46:03,435 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 11 more)] === [2025-04-30 10:46:03,436 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:46:03,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1265476243, now seen corresponding path program 1 times [2025-04-30 10:46:03,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:46:03,436 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511669311] [2025-04-30 10:46:03,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:46:03,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:46:03,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-30 10:46:03,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-30 10:46:03,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:03,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:46:03,470 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-30 10:46:03,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-30 10:46:03,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-30 10:46:03,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:46:03,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:46:03,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-30 10:46:03,501 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-30 10:46:03,502 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2025-04-30 10:46:03,503 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (12 of 14 remaining) [2025-04-30 10:46:03,503 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (11 of 14 remaining) [2025-04-30 10:46:03,503 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (10 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (9 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2025-04-30 10:46:03,504 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2025-04-30 10:46:03,504 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:46:03,504 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-04-30 10:46:03,530 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-30 10:46:03,531 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:46:03,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:46:03 BasicIcfg [2025-04-30 10:46:03,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:46:03,537 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:46:03,537 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:46:03,537 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:46:03,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:46:03" (3/4) ... [2025-04-30 10:46:03,538 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-30 10:46:03,565 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 3. [2025-04-30 10:46:03,591 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:46:03,591 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:46:03,591 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:46:03,592 INFO L158 Benchmark]: Toolchain (without parser) took 1549.35ms. Allocated memory is still 142.6MB. Free memory was 104.6MB in the beginning and 71.7MB in the end (delta: 32.8MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2025-04-30 10:46:03,593 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:03,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.08ms. Allocated memory is still 142.6MB. Free memory was 104.6MB in the beginning and 74.8MB in the end (delta: 29.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-30 10:46:03,594 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.15ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 72.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:03,594 INFO L158 Benchmark]: Boogie Preprocessor took 42.65ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:03,594 INFO L158 Benchmark]: RCFGBuilder took 393.66ms. Allocated memory is still 142.6MB. Free memory was 71.7MB in the beginning and 50.7MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-30 10:46:03,594 INFO L158 Benchmark]: TraceAbstraction took 531.21ms. Allocated memory is still 142.6MB. Free memory was 49.7MB in the beginning and 78.2MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:46:03,595 INFO L158 Benchmark]: Witness Printer took 54.37ms. Allocated memory is still 142.6MB. Free memory was 78.2MB in the beginning and 71.7MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:46:03,596 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 201.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.08ms. Allocated memory is still 142.6MB. Free memory was 104.6MB in the beginning and 74.8MB in the end (delta: 29.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.15ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 72.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.65ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 393.66ms. Allocated memory is still 142.6MB. Free memory was 71.7MB in the beginning and 50.7MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 531.21ms. Allocated memory is still 142.6MB. Free memory was 49.7MB in the beginning and 78.2MB in the end (delta: -28.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 54.37ms. Allocated memory is still 142.6MB. Free memory was 78.2MB in the beginning and 71.7MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\at(arg, Pre)={-2:6}, \at(argc, Pre)=4, a={-2:0}, argc=4, i=1, id1=-1, ind=0, j=2, size=2] [L1041] 1 int *a = (int *)arg; VAL [\at(arg, Pre)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 [L1043] 1 ++ind VAL [\at(arg, Pre)={-2:0}, a={-2:0}, arg={-2:0}, i=1, ind=1, j=2, size=2] [L1044] 1 a[ind] = i - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: 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: 1064]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 41 locations, 43 edges, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 1 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-30 10:46:03,612 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)