./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-recursive-malloc/chunk1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:49:15,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:49:15,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2025-04-30 10:49:15,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:49:15,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:49:15,133 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:49:15,133 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:49:15,134 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:49:15,134 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:49:15,134 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:49:15,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:49:15,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:49:15,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:49:15,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:49:15,136 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:49:15,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:49:15,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:49:15,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:49:15,136 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:49:15,136 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:49:15,137 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:49:15,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:49:15,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:49:15,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:49:15,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:49:15,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:49:15,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:49:15,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:49:15,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-30 10:49:15,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-30 10:49:15,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:49:15,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:49:15,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:49:15,139 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2025-04-30 10:49:15,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:49:15,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:49:15,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:49:15,405 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:49:15,405 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:49:15,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.i [2025-04-30 10:49:16,717 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3665a2c62/5ae787e8f22346de8eaff3f44c82b437/FLAG1f5f69925 [2025-04-30 10:49:16,900 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:49:16,901 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.i [2025-04-30 10:49:16,905 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3665a2c62/5ae787e8f22346de8eaff3f44c82b437/FLAG1f5f69925 [2025-04-30 10:49:17,718 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3665a2c62/5ae787e8f22346de8eaff3f44c82b437 [2025-04-30 10:49:17,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:49:17,721 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:49:17,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:49:17,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:49:17,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:49:17,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3c8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17, skipping insertion in model container [2025-04-30 10:49:17,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:49:17,866 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:49:17,875 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:49:17,899 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:49:17,910 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:49:17,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17 WrapperNode [2025-04-30 10:49:17,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:49:17,911 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:49:17,912 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:49:17,912 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:49:17,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,921 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,936 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2025-04-30 10:49:17,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:49:17,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:49:17,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:49:17,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:49:17,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,954 INFO L175 MemorySlicer]: Split 6 memory accesses to 1 slices as follows [6]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2025-04-30 10:49:17,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,957 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,959 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,961 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,968 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:49:17,969 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:49:17,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:49:17,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:49:17,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (1/1) ... [2025-04-30 10:49:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:49:17,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:49:17,998 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 10:49:18,001 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 10:49:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-30 10:49:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-30 10:49:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2025-04-30 10:49:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2025-04-30 10:49:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:49:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:49:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-30 10:49:18,063 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:49:18,065 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:49:18,173 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-04-30 10:49:18,173 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:49:18,179 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:49:18,179 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:49:18,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:49:18 BoogieIcfgContainer [2025-04-30 10:49:18,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:49:18,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:49:18,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:49:18,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:49:18,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:49:17" (1/3) ... [2025-04-30 10:49:18,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c28de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:49:18, skipping insertion in model container [2025-04-30 10:49:18,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:17" (2/3) ... [2025-04-30 10:49:18,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c28de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:49:18, skipping insertion in model container [2025-04-30 10:49:18,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:49:18" (3/3) ... [2025-04-30 10:49:18,185 INFO L128 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2025-04-30 10:49:18,194 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:49:18,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chunk1-2.i that has 2 procedures, 33 locations, 37 edges, 1 initial locations, 0 loop locations, and 13 error locations. [2025-04-30 10:49:18,222 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:49:18,230 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;@e9b4d24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:49:18,231 INFO L341 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-04-30 10:49:18,235 INFO L278 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 1.9375) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-04-30 10:49:18,238 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-30 10:49:18,239 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:49:18,239 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-30 10:49:18,239 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-04-30 10:49:18,243 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:49:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2025-04-30 10:49:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-30 10:49:18,249 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309122126] [2025-04-30 10:49:18,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:49:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-30 10:49:18,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-30 10:49:18,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-30 10:49:18,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:49:18,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:49:18,310 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-30 10:49:18,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-30 10:49:18,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-30 10:49:18,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:49:18,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:49:18,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-30 10:49:18,327 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-30 10:49:18,327 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2025-04-30 10:49:18,328 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2025-04-30 10:49:18,329 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2025-04-30 10:49:18,330 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2025-04-30 10:49:18,330 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2025-04-30 10:49:18,330 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-30 10:49:18,336 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-30 10:49:18,355 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:49:18,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:49:18 BoogieIcfgContainer [2025-04-30 10:49:18,357 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:49:18,358 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:49:18,358 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:49:18,358 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:49:18,358 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:49:18" (3/4) ... [2025-04-30 10:49:18,360 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-30 10:49:18,360 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:49:18,361 INFO L158 Benchmark]: Toolchain (without parser) took 640.15ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 69.0MB in the end (delta: 42.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-04-30 10:49:18,361 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:49:18,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.16ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 97.0MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-30 10:49:18,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.98ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 96.0MB in the end (delta: 987.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:49:18,362 INFO L158 Benchmark]: Boogie Preprocessor took 31.76ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 95.0MB in the end (delta: 997.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:49:18,362 INFO L158 Benchmark]: RCFGBuilder took 210.03ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 82.7MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:49:18,364 INFO L158 Benchmark]: TraceAbstraction took 176.66ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 69.9MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:49:18,364 INFO L158 Benchmark]: Witness Printer took 2.86ms. Allocated memory is still 142.6MB. Free memory was 69.9MB in the beginning and 69.0MB in the end (delta: 976.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:49:18,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 126.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.16ms. Allocated memory is still 142.6MB. Free memory was 111.0MB in the beginning and 97.0MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.98ms. Allocated memory is still 142.6MB. Free memory was 97.0MB in the beginning and 96.0MB in the end (delta: 987.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.76ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 95.0MB in the end (delta: 997.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 210.03ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 82.7MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 176.66ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 69.9MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 2.86ms. Allocated memory is still 142.6MB. Free memory was 69.9MB in the beginning and 69.0MB in the end (delta: 976.9kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={-1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 37 edges, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-30 10:49:18,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-30 10:49:20,190 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-30 10:49:20,266 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2025-04-30 10:49:20,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-30 10:49:20,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-30 10:49:20,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-30 10:49:20,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-30 10:49:20,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-30 10:49:20,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-30 10:49:20,291 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-30 10:49:20,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-30 10:49:20,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-30 10:49:20,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-30 10:49:20,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-30 10:49:20,291 INFO L153 SettingsManager]: * Use SBE=true [2025-04-30 10:49:20,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-30 10:49:20,292 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-30 10:49:20,293 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:49:20,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-30 10:49:20,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:49:20,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-30 10:49:20,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-30 10:49:20,294 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-30 10:49:20,294 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-30 10:49:20,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-30 10:49:20,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-30 10:49:20,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-30 10:49:20,294 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a66369f5c9a0270ee2408adc274f8f50150ff97d329dbc5d86329753dd9abac [2025-04-30 10:49:20,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-30 10:49:20,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-30 10:49:20,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-30 10:49:20,528 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-30 10:49:20,528 INFO L274 PluginConnector]: CDTParser initialized [2025-04-30 10:49:20,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.i [2025-04-30 10:49:21,898 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9958f2f/33dc6868e8bc4873b09e3c41386fd300/FLAG2fd3a311d [2025-04-30 10:49:22,046 INFO L389 CDTParser]: Found 1 translation units. [2025-04-30 10:49:22,047 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.i [2025-04-30 10:49:22,054 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9958f2f/33dc6868e8bc4873b09e3c41386fd300/FLAG2fd3a311d [2025-04-30 10:49:22,949 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c9958f2f/33dc6868e8bc4873b09e3c41386fd300 [2025-04-30 10:49:22,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-30 10:49:22,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-30 10:49:22,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-30 10:49:22,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-30 10:49:22,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-30 10:49:22,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:49:22" (1/1) ... [2025-04-30 10:49:22,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eaa9349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:22, skipping insertion in model container [2025-04-30 10:49:22,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 10:49:22" (1/1) ... [2025-04-30 10:49:22,968 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-30 10:49:23,093 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:49:23,102 INFO L200 MainTranslator]: Completed pre-run [2025-04-30 10:49:23,118 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-30 10:49:23,127 INFO L204 MainTranslator]: Completed translation [2025-04-30 10:49:23,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23 WrapperNode [2025-04-30 10:49:23,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-30 10:49:23,128 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-30 10:49:23,129 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-30 10:49:23,129 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-30 10:49:23,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,153 INFO L138 Inliner]: procedures = 11, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2025-04-30 10:49:23,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-30 10:49:23,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-30 10:49:23,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-30 10:49:23,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-30 10:49:23,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,171 INFO L175 MemorySlicer]: Split 6 memory accesses to 1 slices as follows [6]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2025-04-30 10:49:23,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,171 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,177 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-30 10:49:23,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-30 10:49:23,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-30 10:49:23,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-30 10:49:23,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (1/1) ... [2025-04-30 10:49:23,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-30 10:49:23,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:49:23,213 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 10:49:23,219 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 10:49:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-30 10:49:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-04-30 10:49:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2025-04-30 10:49:23,234 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2025-04-30 10:49:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-30 10:49:23,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-30 10:49:23,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-04-30 10:49:23,274 INFO L234 CfgBuilder]: Building ICFG [2025-04-30 10:49:23,275 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-30 10:49:23,426 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-04-30 10:49:23,427 INFO L283 CfgBuilder]: Performing block encoding [2025-04-30 10:49:23,432 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-30 10:49:23,432 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-30 10:49:23,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:49:23 BoogieIcfgContainer [2025-04-30 10:49:23,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-30 10:49:23,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-30 10:49:23,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-30 10:49:23,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-30 10:49:23,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 10:49:22" (1/3) ... [2025-04-30 10:49:23,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4887e9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:49:23, skipping insertion in model container [2025-04-30 10:49:23,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 10:49:23" (2/3) ... [2025-04-30 10:49:23,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4887e9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 10:49:23, skipping insertion in model container [2025-04-30 10:49:23,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:49:23" (3/3) ... [2025-04-30 10:49:23,440 INFO L128 eAbstractionObserver]: Analyzing ICFG chunk1-2.i [2025-04-30 10:49:23,449 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-30 10:49:23,450 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chunk1-2.i that has 2 procedures, 33 locations, 37 edges, 1 initial locations, 0 loop locations, and 13 error locations. [2025-04-30 10:49:23,474 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-30 10:49:23,485 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;@4212c8ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-30 10:49:23,485 INFO L341 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-04-30 10:49:23,487 INFO L278 IsEmpty]: Start isEmpty. Operand has 33 states, 16 states have (on average 1.9375) internal successors, (31), 31 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-04-30 10:49:23,490 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-30 10:49:23,490 INFO L210 NwaCegarLoop]: Found error trace [2025-04-30 10:49:23,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-30 10:49:23,491 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2025-04-30 10:49:23,494 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-30 10:49:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1572078, now seen corresponding path program 1 times [2025-04-30 10:49:23,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-04-30 10:49:23,501 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932429606] [2025-04-30 10:49:23,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-30 10:49:23,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:49:23,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-30 10:49:23,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-30 10:49:23,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-30 10:49:23,547 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-30 10:49:23,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-30 10:49:23,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:49:23,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:49:23,555 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-30 10:49:23,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-30 10:49:23,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-30 10:49:23,561 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-30 10:49:23,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-30 10:49:23,571 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-04-30 10:49:23,573 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-30 10:49:23,573 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2025-04-30 10:49:23,574 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 13 remaining) [2025-04-30 10:49:23,574 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2025-04-30 10:49:23,574 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 13 remaining) [2025-04-30 10:49:23,575 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 13 remaining) [2025-04-30 10:49:23,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-04-30 10:49:23,780 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-30 10:49:23,783 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-30 10:49:23,805 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-30 10:49:23,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 10:49:23 BoogieIcfgContainer [2025-04-30 10:49:23,807 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-30 10:49:23,808 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-30 10:49:23,808 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-30 10:49:23,808 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-30 10:49:23,809 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 10:49:23" (3/4) ... [2025-04-30 10:49:23,811 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-04-30 10:49:23,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-30 10:49:23,812 INFO L158 Benchmark]: Toolchain (without parser) took 859.97ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 51.0MB in the end (delta: 40.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-04-30 10:49:23,812 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 83.9MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 18.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:49:23,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.95ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 77.7MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:49:23,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.55ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 76.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:49:23,815 INFO L158 Benchmark]: Boogie Preprocessor took 33.18ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 74.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:49:23,815 INFO L158 Benchmark]: RCFGBuilder took 244.91ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 62.3MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:49:23,815 INFO L158 Benchmark]: TraceAbstraction took 372.86ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 51.2MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-30 10:49:23,815 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 117.4MB. Free memory was 51.2MB in the beginning and 51.0MB in the end (delta: 188.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-30 10:49:23,817 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94ms. Allocated memory is still 83.9MB. Free memory was 53.9MB in the beginning and 53.9MB in the end (delta: 18.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.95ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 77.7MB in the end (delta: 13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.55ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 76.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.18ms. Allocated memory is still 117.4MB. Free memory was 76.2MB in the beginning and 74.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 244.91ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 62.3MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 372.86ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 51.2MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 117.4MB. Free memory was 51.2MB in the beginning and 51.0MB in the end (delta: 188.2kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L20] int *data = malloc(4*sizeof(int)); [L22] int i = __VERIFIER_nondet_int(); [L23] int upper = __VERIFIER_nondet_int(); [L25] COND TRUE i >= upper [L26] return 0; VAL [\result=0, data={2:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 37 edges, 13 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-04-30 10:49:23,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample