./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.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/06-symbeq_13-equ_proc_nr.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 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:54:16,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:54:16,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:54:16,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:54:16,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:54:17,000 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:54:17,001 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:54:17,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:54:17,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:54:17,005 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:54:17,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:54:17,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:54:17,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:54:17,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:54:17,005 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:54:17,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:54:17,005 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:54:17,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:54:17,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:54:17,006 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:54:17,006 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:54:17,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:54:17,006 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 -> 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 [2025-02-06 12:54:17,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:54:17,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:54:17,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:54:17,239 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:54:17,240 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:54:17,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i [2025-02-06 12:54:18,431 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/878e5b5b1/c00e52e4fa114417ba4724214b63b9c2/FLAG15d5d6344 [2025-02-06 12:54:18,808 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:54:18,809 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i [2025-02-06 12:54:18,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/878e5b5b1/c00e52e4fa114417ba4724214b63b9c2/FLAG15d5d6344 [2025-02-06 12:54:19,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/878e5b5b1/c00e52e4fa114417ba4724214b63b9c2 [2025-02-06 12:54:19,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:54:19,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:54:19,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:54:19,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:54:19,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:54:19,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0e4973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19, skipping insertion in model container [2025-02-06 12:54:19,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:54:19,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:54:19,291 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:54:19,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:54:19,354 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:54:19,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19 WrapperNode [2025-02-06 12:54:19,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:54:19,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:54:19,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:54:19,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:54:19,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,383 INFO L138 Inliner]: procedures = 266, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2025-02-06 12:54:19,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:54:19,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:54:19,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:54:19,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:54:19,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,392 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,401 INFO L175 MemorySlicer]: Split 14 memory accesses to 1 slices as follows [14]. 100 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [12]. The 2 writes are split as follows [2]. [2025-02-06 12:54:19,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,405 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:54:19,410 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:54:19,410 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:54:19,410 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:54:19,411 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (1/1) ... [2025-02-06 12:54:19,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:54:19,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:19,444 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 12:54:19,452 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 12:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 12:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 12:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 12:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 12:54:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 12:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:54:19,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:54:19,470 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 12:54:19,573 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:54:19,574 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:54:19,709 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:54:19,709 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:54:19,804 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:54:19,805 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:54:19,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:19 BoogieIcfgContainer [2025-02-06 12:54:19,805 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:54:19,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:54:19,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:54:19,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:54:19,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:54:19" (1/3) ... [2025-02-06 12:54:19,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446591c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:54:19, skipping insertion in model container [2025-02-06 12:54:19,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:19" (2/3) ... [2025-02-06 12:54:19,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446591c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:54:19, skipping insertion in model container [2025-02-06 12:54:19,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:19" (3/3) ... [2025-02-06 12:54:19,812 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_13-equ_proc_nr.i [2025-02-06 12:54:19,821 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:54:19,822 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_13-equ_proc_nr.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 5 error locations. [2025-02-06 12:54:19,823 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:54:19,846 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:54:19,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2025-02-06 12:54:19,893 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2025-02-06 12:54:19,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:19,896 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 30 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 12:54:19,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2025-02-06 12:54:19,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2025-02-06 12:54:19,903 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:54:19,910 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;@44ebf567, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:54:19,910 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-02-06 12:54:19,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:54:19,915 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2025-02-06 12:54:19,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:19,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:19,916 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:54:19,916 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 12:54:19,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash 848148126, now seen corresponding path program 1 times [2025-02-06 12:54:19,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936198360] [2025-02-06 12:54:19,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:19,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:19,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:54:19,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:54:19,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:19,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:20,203 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 12:54:20,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936198360] [2025-02-06 12:54:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936198360] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:20,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:20,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:54:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012615206] [2025-02-06 12:54:20,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:20,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:54:20,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:20,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:54:20,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:54:20,244 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2025-02-06 12:54:20,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 12:54:20,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:20,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2025-02-06 12:54:20,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:20,345 INFO L124 PetriNetUnfolderBase]: 21/67 cut-off events. [2025-02-06 12:54:20,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:20,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 67 events. 21/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 214 event pairs, 15 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 117. Up to 40 conditions per place. [2025-02-06 12:54:20,347 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 12 selfloop transitions, 4 changer transitions 2/25 dead transitions. [2025-02-06 12:54:20,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 89 flow [2025-02-06 12:54:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:54:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:54:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2025-02-06 12:54:20,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2025-02-06 12:54:20,356 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 4 states and 51 transitions. [2025-02-06 12:54:20,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 89 flow [2025-02-06 12:54:20,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:54:20,361 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 48 flow [2025-02-06 12:54:20,362 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2025-02-06 12:54:20,364 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2025-02-06 12:54:20,364 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 48 flow [2025-02-06 12:54:20,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 12:54:20,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:20,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:54:20,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:54:20,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:54:20,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:20,366 INFO L85 PathProgramCache]: Analyzing trace with hash 848460799, now seen corresponding path program 1 times [2025-02-06 12:54:20,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:20,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894134889] [2025-02-06 12:54:20,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:20,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:20,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:54:20,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:54:20,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:20,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:20,445 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 12:54:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:20,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894134889] [2025-02-06 12:54:20,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894134889] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:20,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:20,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:54:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394438283] [2025-02-06 12:54:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:20,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:54:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:20,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:54:20,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:54:20,458 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2025-02-06 12:54:20,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 12:54:20,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:20,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2025-02-06 12:54:20,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:20,494 INFO L124 PetriNetUnfolderBase]: 21/65 cut-off events. [2025-02-06 12:54:20,494 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 12:54:20,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 65 events. 21/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 21 based on Foata normal form. 7/69 useless extension candidates. Maximal degree in co-relation 127. Up to 54 conditions per place. [2025-02-06 12:54:20,496 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 11 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2025-02-06 12:54:20,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 18 transitions, 70 flow [2025-02-06 12:54:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:54:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:54:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-02-06 12:54:20,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2025-02-06 12:54:20,497 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 48 flow. Second operand 3 states and 37 transitions. [2025-02-06 12:54:20,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 18 transitions, 70 flow [2025-02-06 12:54:20,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 62 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 12:54:20,498 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 40 flow [2025-02-06 12:54:20,498 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2025-02-06 12:54:20,499 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2025-02-06 12:54:20,499 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 40 flow [2025-02-06 12:54:20,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 12:54:20,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:20,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:54:20,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:54:20,500 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:54:20,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:20,500 INFO L85 PathProgramCache]: Analyzing trace with hash 848460800, now seen corresponding path program 1 times [2025-02-06 12:54:20,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:20,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006682921] [2025-02-06 12:54:20,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:20,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:20,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:54:20,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:54:20,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:20,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:20,601 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 12:54:20,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:20,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006682921] [2025-02-06 12:54:20,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006682921] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:20,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:20,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:54:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715543077] [2025-02-06 12:54:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:20,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:54:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:20,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:54:20,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:54:20,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2025-02-06 12:54:20,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 12:54:20,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:20,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2025-02-06 12:54:20,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:20,653 INFO L124 PetriNetUnfolderBase]: 21/64 cut-off events. [2025-02-06 12:54:20,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:20,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 64 events. 21/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 21 based on Foata normal form. 7/69 useless extension candidates. Maximal degree in co-relation 118. Up to 54 conditions per place. [2025-02-06 12:54:20,654 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 10 selfloop transitions, 1 changer transitions 1/17 dead transitions. [2025-02-06 12:54:20,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 62 flow [2025-02-06 12:54:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:54:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:54:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2025-02-06 12:54:20,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2025-02-06 12:54:20,655 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 40 flow. Second operand 3 states and 37 transitions. [2025-02-06 12:54:20,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 62 flow [2025-02-06 12:54:20,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 61 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:54:20,656 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 37 flow [2025-02-06 12:54:20,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2025-02-06 12:54:20,657 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2025-02-06 12:54:20,657 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 37 flow [2025-02-06 12:54:20,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 12:54:20,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:20,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 12:54:20,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:54:20,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:54:20,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash 848148127, now seen corresponding path program 1 times [2025-02-06 12:54:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:20,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865225393] [2025-02-06 12:54:20,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:20,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:20,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 12:54:20,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 12:54:20,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:20,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:20,860 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 12:54:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865225393] [2025-02-06 12:54:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865225393] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:54:20,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156673068] [2025-02-06 12:54:20,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:20,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:54:20,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:20,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:54:20,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:54:20,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2025-02-06 12:54:20,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 12:54:20,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:20,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2025-02-06 12:54:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:20,937 INFO L124 PetriNetUnfolderBase]: 18/54 cut-off events. [2025-02-06 12:54:20,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:20,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 54 events. 18/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 15 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 101. Up to 40 conditions per place. [2025-02-06 12:54:20,939 INFO L140 encePairwiseOnDemand]: 17/21 looper letters, 11 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2025-02-06 12:54:20,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 69 flow [2025-02-06 12:54:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 12:54:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 12:54:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2025-02-06 12:54:20,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2025-02-06 12:54:20,940 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 37 flow. Second operand 4 states and 47 transitions. [2025-02-06 12:54:20,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 69 flow [2025-02-06 12:54:20,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:54:20,941 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 40 flow [2025-02-06 12:54:20,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=40, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2025-02-06 12:54:20,942 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2025-02-06 12:54:20,942 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 40 flow [2025-02-06 12:54:20,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 12:54:20,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:20,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:20,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:54:20,942 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2025-02-06 12:54:20,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:20,943 INFO L85 PathProgramCache]: Analyzing trace with hash -111567607, now seen corresponding path program 1 times [2025-02-06 12:54:20,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:20,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500126322] [2025-02-06 12:54:20,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:20,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:20,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 12:54:20,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 12:54:20,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:20,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:20,979 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 12:54:20,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500126322] [2025-02-06 12:54:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500126322] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:20,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:54:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563608471] [2025-02-06 12:54:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:20,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:54:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:20,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:54:20,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:54:20,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2025-02-06 12:54:20,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 12:54:20,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:20,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2025-02-06 12:54:20,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:21,009 INFO L124 PetriNetUnfolderBase]: 18/50 cut-off events. [2025-02-06 12:54:21,010 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 12:54:21,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 50 events. 18/50 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 133 event pairs, 18 based on Foata normal form. 4/52 useless extension candidates. Maximal degree in co-relation 105. Up to 47 conditions per place. [2025-02-06 12:54:21,011 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2025-02-06 12:54:21,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 14 transitions, 60 flow [2025-02-06 12:54:21,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:54:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:54:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2025-02-06 12:54:21,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2025-02-06 12:54:21,012 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 40 flow. Second operand 3 states and 36 transitions. [2025-02-06 12:54:21,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 14 transitions, 60 flow [2025-02-06 12:54:21,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 12:54:21,013 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2025-02-06 12:54:21,013 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 12:54:21,013 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2025-02-06 12:54:21,013 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2025-02-06 12:54:21,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 12:54:21,015 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2025-02-06 12:54:21,015 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2025-02-06 12:54:21,015 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2025-02-06 12:54:21,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2025-02-06 12:54:21,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2025-02-06 12:54:21,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2025-02-06 12:54:21,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2025-02-06 12:54:21,016 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 8 remaining) [2025-02-06 12:54:21,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:54:21,016 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-06 12:54:21,020 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 12:54:21,020 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 12:54:21,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 12:54:21 BasicIcfg [2025-02-06 12:54:21,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 12:54:21,024 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 12:54:21,025 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 12:54:21,025 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 12:54:21,025 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:19" (3/4) ... [2025-02-06 12:54:21,026 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 12:54:21,028 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-02-06 12:54:21,030 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2025-02-06 12:54:21,031 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-02-06 12:54:21,031 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-06 12:54:21,031 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 12:54:21,031 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 12:54:21,084 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 12:54:21,084 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 12:54:21,084 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 12:54:21,085 INFO L158 Benchmark]: Toolchain (without parser) took 2073.65ms. Allocated memory is still 201.3MB. Free memory was 155.4MB in the beginning and 58.9MB in the end (delta: 96.6MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:21,086 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 209.7MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:21,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.23ms. Allocated memory is still 201.3MB. Free memory was 155.4MB in the beginning and 127.9MB in the end (delta: 27.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:54:21,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.28ms. Allocated memory is still 201.3MB. Free memory was 127.9MB in the beginning and 126.1MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:21,087 INFO L158 Benchmark]: Boogie Preprocessor took 24.95ms. Allocated memory is still 201.3MB. Free memory was 126.1MB in the beginning and 124.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:21,087 INFO L158 Benchmark]: IcfgBuilder took 395.56ms. Allocated memory is still 201.3MB. Free memory was 124.4MB in the beginning and 96.4MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:54:21,087 INFO L158 Benchmark]: TraceAbstraction took 1217.32ms. Allocated memory is still 201.3MB. Free memory was 95.5MB in the beginning and 65.1MB in the end (delta: 30.4MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2025-02-06 12:54:21,088 INFO L158 Benchmark]: Witness Printer took 59.50ms. Allocated memory is still 201.3MB. Free memory was 65.1MB in the beginning and 58.9MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:21,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 209.7MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.23ms. Allocated memory is still 201.3MB. Free memory was 155.4MB in the beginning and 127.9MB in the end (delta: 27.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.28ms. Allocated memory is still 201.3MB. Free memory was 127.9MB in the beginning and 126.1MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.95ms. Allocated memory is still 201.3MB. Free memory was 126.1MB in the beginning and 124.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 395.56ms. Allocated memory is still 201.3MB. Free memory was 124.4MB in the beginning and 96.4MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1217.32ms. Allocated memory is still 201.3MB. Free memory was 95.5MB in the beginning and 65.1MB in the end (delta: 30.4MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Witness Printer took 59.50ms. Allocated memory is still 201.3MB. Free memory was 65.1MB in the beginning and 58.9MB in the end (delta: 6.2MB). 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: 1001]: 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: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 146 IncrementalHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=1, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 12:54:21,103 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