./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:54:06,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:54:06,630 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:54:06,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:54:06,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:54:06,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:54:06,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:54:06,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:54:06,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:54:06,648 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:54:06,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:54:06,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:54:06,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:54:06,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:54:06,649 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:54:06,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:54:06,649 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:54:06,649 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:54:06,649 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:54:06,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:54:06,650 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:54:06,650 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:54:06,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:54:06,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:54:06,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:54:06,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:54:06,652 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-jdk21/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 -> 8d306ff8cfbc22ceebe04735dbb58cf2d83206c78fa42d12e01716373b332b54 [2025-02-06 12:54:06,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:54:06,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:54:06,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:54:06,882 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:54:06,882 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:54:06,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2025-02-06 12:54:08,126 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0e73bc73b/0d1f4571e66b45a199939d5340e175d1/FLAGfaabefd48 [2025-02-06 12:54:08,493 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:54:08,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_22-deref_read.i [2025-02-06 12:54:08,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0e73bc73b/0d1f4571e66b45a199939d5340e175d1/FLAGfaabefd48 [2025-02-06 12:54:08,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0e73bc73b/0d1f4571e66b45a199939d5340e175d1 [2025-02-06 12:54:08,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:54:08,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:54:08,532 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:54:08,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:54:08,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:54:08,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191d48b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08, skipping insertion in model container [2025-02-06 12:54:08,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,566 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:54:08,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:54:08,844 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:54:08,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:54:08,922 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:54:08,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08 WrapperNode [2025-02-06 12:54:08,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:54:08,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:54:08,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:54:08,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:54:08,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,975 INFO L138 Inliner]: procedures = 162, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2025-02-06 12:54:08,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:54:08,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:54:08,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:54:08,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:54:08,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,986 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,995 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [3, 5]. 63 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [1, 5]. The 2 writes are split as follows [2, 0]. [2025-02-06 12:54:08,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:08,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:09,008 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:09,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:09,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:09,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:09,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:54:09,012 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:54:09,012 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:54:09,012 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:54:09,013 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (1/1) ... [2025-02-06 12:54:09,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:54:09,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:09,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:54:09,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:54:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 12:54:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 12:54:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 12:54:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:54:09,051 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 12:54:09,052 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 12:54:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:54:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 12:54:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 12:54:09,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:54:09,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:54:09,053 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:54:09,124 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:54:09,126 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:54:09,209 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:54:09,210 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:54:09,258 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:54:09,258 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:54:09,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:09 BoogieIcfgContainer [2025-02-06 12:54:09,258 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:54:09,260 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:54:09,260 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:54:09,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:54:09,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:54:08" (1/3) ... [2025-02-06 12:54:09,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593c728c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:54:09, skipping insertion in model container [2025-02-06 12:54:09,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:08" (2/3) ... [2025-02-06 12:54:09,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593c728c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:54:09, skipping insertion in model container [2025-02-06 12:54:09,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:09" (3/3) ... [2025-02-06 12:54:09,276 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2025-02-06 12:54:09,300 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:54:09,302 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_22-deref_read.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 5 error locations. [2025-02-06 12:54:09,306 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:54:09,362 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:54:09,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2025-02-06 12:54:09,417 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-02-06 12:54:09,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:09,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 34 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-02-06 12:54:09,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2025-02-06 12:54:09,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2025-02-06 12:54:09,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:54:09,445 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71df350c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:54:09,447 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-02-06 12:54:09,454 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:54:09,456 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-02-06 12:54:09,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:09,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:09,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:54:09,458 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:54:09,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -569862018, now seen corresponding path program 1 times [2025-02-06 12:54:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:09,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327067714] [2025-02-06 12:54:09,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:09,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:09,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:54:09,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:54:09,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:09,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:54:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:09,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327067714] [2025-02-06 12:54:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327067714] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:09,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:09,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:54:09,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888953737] [2025-02-06 12:54:09,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:09,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:54:09,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:09,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:54:09,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:54:09,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 21 [2025-02-06 12:54:09,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:09,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:09,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 21 [2025-02-06 12:54:09,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:09,768 INFO L124 PetriNetUnfolderBase]: 15/60 cut-off events. [2025-02-06 12:54:09,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:09,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 60 events. 15/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 189 event pairs, 0 based on Foata normal form. 10/64 useless extension candidates. Maximal degree in co-relation 96. Up to 35 conditions per place. [2025-02-06 12:54:09,771 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 11 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2025-02-06 12:54:09,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 71 flow [2025-02-06 12:54:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:54:09,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:54:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-02-06 12:54:09,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 12:54:09,804 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 4 states and 52 transitions. [2025-02-06 12:54:09,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 71 flow [2025-02-06 12:54:09,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:54:09,808 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 42 flow [2025-02-06 12:54:09,809 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2025-02-06 12:54:09,811 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2025-02-06 12:54:09,811 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 42 flow [2025-02-06 12:54:09,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:09,812 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:09,812 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:54:09,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:54:09,812 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:54:09,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash -569862017, now seen corresponding path program 1 times [2025-02-06 12:54:09,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:09,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31826868] [2025-02-06 12:54:09,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:09,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:09,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:54:09,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:54:09,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:09,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:54:09,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:09,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31826868] [2025-02-06 12:54:09,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31826868] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:09,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:09,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:54:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659988839] [2025-02-06 12:54:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:09,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:54:09,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:09,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:54:09,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:54:09,953 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 21 [2025-02-06 12:54:09,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:09,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:09,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 21 [2025-02-06 12:54:09,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:09,997 INFO L124 PetriNetUnfolderBase]: 15/52 cut-off events. [2025-02-06 12:54:09,998 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 12:54:09,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 52 events. 15/52 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 8 based on Foata normal form. 10/60 useless extension candidates. Maximal degree in co-relation 92. Up to 35 conditions per place. [2025-02-06 12:54:09,998 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 10 selfloop transitions, 2 changer transitions 1/19 dead transitions. [2025-02-06 12:54:09,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 70 flow [2025-02-06 12:54:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:54:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:54:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-02-06 12:54:09,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-02-06 12:54:09,999 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 42 flow. Second operand 4 states and 52 transitions. [2025-02-06 12:54:09,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 70 flow [2025-02-06 12:54:10,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:54:10,000 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 37 flow [2025-02-06 12:54:10,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=37, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2025-02-06 12:54:10,001 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2025-02-06 12:54:10,001 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 37 flow [2025-02-06 12:54:10,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:54:10,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:10,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:10,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:54:10,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:54:10,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:10,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1246426041, now seen corresponding path program 1 times [2025-02-06 12:54:10,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:10,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606279374] [2025-02-06 12:54:10,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:10,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:54:10,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:54:10,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:10,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:54:10,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606279374] [2025-02-06 12:54:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606279374] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:54:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398056196] [2025-02-06 12:54:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:10,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:54:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:10,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:54:10,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:54:10,087 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 21 [2025-02-06 12:54:10,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2025-02-06 12:54:10,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:10,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 21 [2025-02-06 12:54:10,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:10,110 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2025-02-06 12:54:10,110 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 12:54:10,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 42 events. 12/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 12 based on Foata normal form. 4/42 useless extension candidates. Maximal degree in co-relation 79. Up to 33 conditions per place. [2025-02-06 12:54:10,110 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2025-02-06 12:54:10,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 53 flow [2025-02-06 12:54:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:54:10,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:54:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2025-02-06 12:54:10,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2025-02-06 12:54:10,114 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 37 flow. Second operand 3 states and 40 transitions. [2025-02-06 12:54:10,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 53 flow [2025-02-06 12:54:10,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:54:10,115 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2025-02-06 12:54:10,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2025-02-06 12:54:10,115 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2025-02-06 12:54:10,115 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2025-02-06 12:54:10,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2025-02-06 12:54:10,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2025-02-06 12:54:10,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2025-02-06 12:54:10,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2025-02-06 12:54:10,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2025-02-06 12:54:10,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2025-02-06 12:54:10,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2025-02-06 12:54:10,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2025-02-06 12:54:10,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 8 remaining) [2025-02-06 12:54:10,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:54:10,119 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-06 12:54:10,125 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 12:54:10,125 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 12:54:10,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 12:54:10 BasicIcfg [2025-02-06 12:54:10,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 12:54:10,131 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 12:54:10,131 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 12:54:10,131 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 12:54:10,132 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:09" (3/4) ... [2025-02-06 12:54:10,133 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 12:54:10,136 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-02-06 12:54:10,139 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-02-06 12:54:10,140 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-02-06 12:54:10,140 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-06 12:54:10,140 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 12:54:10,231 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 12:54:10,231 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 12:54:10,231 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 12:54:10,233 INFO L158 Benchmark]: Toolchain (without parser) took 1702.22ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 70.0MB in the end (delta: 35.4MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:10,233 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:10,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.49ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 86.7MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:54:10,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.58ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 85.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:10,234 INFO L158 Benchmark]: Boogie Preprocessor took 33.92ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 83.1MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:10,234 INFO L158 Benchmark]: IcfgBuilder took 246.39ms. Allocated memory is still 142.6MB. Free memory was 83.1MB in the beginning and 65.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:54:10,234 INFO L158 Benchmark]: TraceAbstraction took 870.74ms. Allocated memory is still 142.6MB. Free memory was 64.4MB in the beginning and 75.5MB in the end (delta: -11.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:10,235 INFO L158 Benchmark]: Witness Printer took 100.33ms. Allocated memory is still 142.6MB. Free memory was 75.5MB in the beginning and 70.0MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:10,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.49ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 86.7MB in the end (delta: 18.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.58ms. Allocated memory is still 142.6MB. Free memory was 86.7MB in the beginning and 85.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.92ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 83.1MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 246.39ms. Allocated memory is still 142.6MB. Free memory was 83.1MB in the beginning and 65.4MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 870.74ms. Allocated memory is still 142.6MB. Free memory was 64.4MB in the beginning and 75.5MB in the end (delta: -11.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 100.33ms. Allocated memory is still 142.6MB. Free memory was 75.5MB in the beginning and 70.0MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 688]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 32 locations, 8 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: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 2 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 12:54:10,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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: TRUE