./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/array-memsafety/count_down_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/array-memsafety/count_down_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:32:48,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:32:48,386 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-04-30 10:32:48,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:32:48,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:32:48,416 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:32:48,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:32:48,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:32:48,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:32:48,418 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:32:48,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:32:48,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:32:48,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:32:48,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:32:48,420 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:32:48,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:32:48,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:32:48,421 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:32:48,421 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9f8e12a96bbd82b23d1fc92b67fc377b3c783a366d4cad2924c946b146eff3f [2025-04-30 10:32:48,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:32:48,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:32:48,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:32:48,644 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:32:48,645 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:32:48,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/count_down_unsafe.i [2025-04-30 10:32:49,849 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65b80b4df/2b0aa7ec8f274100b37136cf33b23bf1/FLAG1fe69786c [2025-04-30 10:32:50,094 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:32:50,096 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/count_down_unsafe.i [2025-04-30 10:32:50,107 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65b80b4df/2b0aa7ec8f274100b37136cf33b23bf1/FLAG1fe69786c [2025-04-30 10:32:51,001 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65b80b4df/2b0aa7ec8f274100b37136cf33b23bf1 [2025-04-30 10:32:51,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:32:51,004 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:32:51,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:32:51,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:32:51,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:32:51,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbc8c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51, skipping insertion in model container [2025-04-30 10:32:51,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:32:51,237 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:32:51,246 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:32:51,287 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:32:51,303 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:32:51,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51 WrapperNode [2025-04-30 10:32:51,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:32:51,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:32:51,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:32:51,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:32:51,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,334 INFO L138 Inliner]: procedures = 115, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-04-30 10:32:51,335 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:32:51,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:32:51,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:32:51,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:32:51,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,342 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,349 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-04-30 10:32:51,350 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:32:51,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:32:51,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:32:51,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:32:51,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (1/1) ... [2025-04-30 10:32:51,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:32:51,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:32:51,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-30 10:32:51,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-30 10:32:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-30 10:32:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-30 10:32:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-30 10:32:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-30 10:32:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:32:51,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:32:51,464 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:32:51,466 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:32:51,577 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2025-04-30 10:32:51,578 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:32:51,585 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:32:51,585 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-30 10:32:51,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:32:51 BoogieIcfgContainer [2025-04-30 10:32:51,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:32:51,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:32:51,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:32:51,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:32:51,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:32:51" (1/3) ... [2025-04-30 10:32:51,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:32:51, skipping insertion in model container [2025-04-30 10:32:51,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:32:51" (2/3) ... [2025-04-30 10:32:51,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:32:51, skipping insertion in model container [2025-04-30 10:32:51,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:32:51" (3/3) ... [2025-04-30 10:32:51,596 INFO L128 eAbstractionObserver]: Analyzing ICFG count_down_unsafe.i [2025-04-30 10:32:51,606 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:32:51,607 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG count_down_unsafe.i that has 1 procedures, 29 locations, 35 edges, 1 initial locations, 3 loop locations, and 9 error locations. [2025-04-30 10:32:51,631 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:32:51,639 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7669004, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:32:51,640 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-04-30 10:32:51,643 INFO L278 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:51,647 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-04-30 10:32:51,647 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:51,648 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-30 10:32:51,648 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2025-04-30 10:32:51,652 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:51,652 INFO L85 PathProgramCache]: Analyzing trace with hash 889508761, now seen corresponding path program 1 times [2025-04-30 10:32:51,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:51,658 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84004172] [2025-04-30 10:32:51,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:51,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-30 10:32:51,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-30 10:32:51,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:51,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:32:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:32:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:32:51,830 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84004172] [2025-04-30 10:32:51,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84004172] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:32:51,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:32:51,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-30 10:32:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508805926] [2025-04-30 10:32:51,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:32:51,835 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-30 10:32:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:32:51,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-30 10:32:51,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-30 10:32:51,853 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 28 states have internal predecessors, (35), 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:32:51,918 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2025-04-30 10:32:51,919 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-30 10:32:51,920 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2025-04-30 10:32:51,920 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:32:51,924 INFO L225 Difference]: With dead ends: 29 [2025-04-30 10:32:51,924 INFO L226 Difference]: Without dead ends: 27 [2025-04-30 10:32:51,925 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-30 10:32:51,929 INFO L437 NwaCegarLoop]: 19 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:32:51,929 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:32:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-04-30 10:32:51,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-04-30 10:32:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-04-30 10:32:51,950 INFO L79 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2025-04-30 10:32:51,950 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:32:51,950 INFO L485 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-04-30 10:32:51,950 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:51,951 INFO L278 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-04-30 10:32:51,951 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:32:51,951 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:51,951 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:51,951 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:32:51,952 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2025-04-30 10:32:51,952 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 119445392, now seen corresponding path program 1 times [2025-04-30 10:32:51,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:51,953 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742405378] [2025-04-30 10:32:51,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:51,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:51,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:32:51,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:32:51,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:51,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-30 10:32:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-30 10:32:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-30 10:32:52,064 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742405378] [2025-04-30 10:32:52,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742405378] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-30 10:32:52,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-30 10:32:52,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-30 10:32:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18550805] [2025-04-30 10:32:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-30 10:32:52,065 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-30 10:32:52,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-30 10:32:52,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-30 10:32:52,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:32:52,067 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-30 10:32:52,096 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2025-04-30 10:32:52,097 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-30 10:32:52,097 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2025-04-30 10:32:52,097 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-30 10:32:52,098 INFO L225 Difference]: With dead ends: 23 [2025-04-30 10:32:52,098 INFO L226 Difference]: Without dead ends: 23 [2025-04-30 10:32:52,098 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-30 10:32:52,098 INFO L437 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-30 10:32:52,098 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-30 10:32:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-04-30 10:32:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-04-30 10:32:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.5) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-04-30 10:32:52,100 INFO L79 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2025-04-30 10:32:52,100 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-30 10:32:52,100 INFO L485 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-04-30 10:32:52,102 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-30 10:32:52,103 INFO L278 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-04-30 10:32:52,103 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-30 10:32:52,103 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:32:52,103 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-30 10:32:52,104 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-30 10:32:52,104 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2025-04-30 10:32:52,105 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:32:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash 119445393, now seen corresponding path program 1 times [2025-04-30 10:32:52,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:32:52,105 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498014226] [2025-04-30 10:32:52,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:32:52,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:32:52,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:32:52,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:32:52,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:52,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:32:52,130 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-30 10:32:52,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-30 10:32:52,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-30 10:32:52,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:32:52,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:32:52,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-30 10:32:52,157 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-30 10:32:52,158 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2025-04-30 10:32:52,160 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2025-04-30 10:32:52,160 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2025-04-30 10:32:52,161 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2025-04-30 10:32:52,161 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2025-04-30 10:32:52,161 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2025-04-30 10:32:52,162 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2025-04-30 10:32:52,162 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2025-04-30 10:32:52,162 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2025-04-30 10:32:52,162 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-30 10:32:52,165 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-30 10:32:52,191 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:32:52,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:32:52 BoogieIcfgContainer [2025-04-30 10:32:52,194 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:32:52,195 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:32:52,196 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:32:52,196 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:32:52,196 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:32:51" (3/4) ... [2025-04-30 10:32:52,197 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-30 10:32:52,244 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 5. [2025-04-30 10:32:52,272 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-30 10:32:52,273 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-30 10:32:52,273 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:32:52,274 INFO L158 Benchmark]: Toolchain (without parser) took 1269.84ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 105.8MB in the end (delta: 6.8MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2025-04-30 10:32:52,274 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:32:52,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.66ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 93.0MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:32:52,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.94ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 91.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:32:52,277 INFO L158 Benchmark]: Boogie Preprocessor took 23.25ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:32:52,277 INFO L158 Benchmark]: RCFGBuilder took 226.72ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 76.8MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:32:52,277 INFO L158 Benchmark]: TraceAbstraction took 607.54ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 41.8MB in the end (delta: 34.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-30 10:32:52,277 INFO L158 Benchmark]: Witness Printer took 77.66ms. Allocated memory is still 142.6MB. Free memory was 41.8MB in the beginning and 105.8MB in the end (delta: -64.0MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2025-04-30 10:32:52,278 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.66ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 93.0MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.94ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 91.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.25ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.6MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 226.72ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 76.8MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 607.54ms. Allocated memory is still 142.6MB. Free memory was 76.3MB in the beginning and 41.8MB in the end (delta: 34.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 77.66ms. Allocated memory is still 142.6MB. Free memory was 41.8MB in the beginning and 105.8MB in the end (delta: -64.0MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int val; [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L516] length = 1 VAL [length=1] [L517] int *arr = __builtin_alloca (length); VAL [arr={2:0}, length=1] [L518] COND FALSE !(!arr) [L519] i=0 VAL [arr={2:0}, i=0, length=1] [L519] COND TRUE i