./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed 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 ../sv-benchmarks/c/memsafety-ext3/scopes2.c -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 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 22:52:53,103 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 22:52:53,149 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-08 22:52:53,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 22:52:53,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 22:52:53,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 22:52:53,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 22:52:53,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 22:52:53,171 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 22:52:53,171 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 22:52:53,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 22:52:53,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 22:52:53,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 22:52:53,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 22:52:53,172 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 22:52:53,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 22:52:53,172 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 22:52:53,173 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 22:52:53,174 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:52:53,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 22:52:53,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 22:52:53,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 22:52:53,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 22:52:53,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 22:52:53,175 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 22:52:53,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 22:52:53,175 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 -> 4971cb0b49f8cd6920aed64e922b55ffc2bc14d188aa433fccbb1000a12773a3 [2025-03-08 22:52:53,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 22:52:53,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 22:52:53,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 22:52:53,391 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 22:52:53,391 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 22:52:53,392 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/scopes2.c [2025-03-08 22:52:54,565 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26faa3700/e603c057591745bf9256308d88e43ea2/FLAGb247afe4a [2025-03-08 22:52:54,795 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 22:52:54,796 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/scopes2.c [2025-03-08 22:52:54,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26faa3700/e603c057591745bf9256308d88e43ea2/FLAGb247afe4a [2025-03-08 22:52:55,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26faa3700/e603c057591745bf9256308d88e43ea2 [2025-03-08 22:52:55,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 22:52:55,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 22:52:55,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 22:52:55,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 22:52:55,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 22:52:55,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b533ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55, skipping insertion in model container [2025-03-08 22:52:55,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,138 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:52:55,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:52:55,236 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 22:52:55,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:52:55,254 INFO L204 MainTranslator]: Completed translation [2025-03-08 22:52:55,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55 WrapperNode [2025-03-08 22:52:55,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 22:52:55,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 22:52:55,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 22:52:55,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 22:52:55,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,277 INFO L138 Inliner]: procedures = 10, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2025-03-08 22:52:55,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 22:52:55,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 22:52:55,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 22:52:55,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 22:52:55,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,297 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1]. The 0 writes are split as follows [0, 0]. [2025-03-08 22:52:55,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,301 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,303 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 22:52:55,308 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 22:52:55,309 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 22:52:55,310 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 22:52:55,310 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (1/1) ... [2025-03-08 22:52:55,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:52:55,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:55,337 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) [2025-03-08 22:52:55,342 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 [2025-03-08 22:52:55,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 22:52:55,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 22:52:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 22:52:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 22:52:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 22:52:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 22:52:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 22:52:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 22:52:55,408 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 22:52:55,410 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 22:52:55,498 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#myNumberB~0#1.base, main_~#myNumberB~0#1.offset);havoc main_~#myNumberB~0#1.base, main_~#myNumberB~0#1.offset; [2025-03-08 22:52:55,503 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-03-08 22:52:55,503 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 22:52:55,511 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 22:52:55,512 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 22:52:55,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:52:55 BoogieIcfgContainer [2025-03-08 22:52:55,512 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 22:52:55,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 22:52:55,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 22:52:55,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 22:52:55,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:52:55" (1/3) ... [2025-03-08 22:52:55,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb10c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:52:55, skipping insertion in model container [2025-03-08 22:52:55,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:52:55" (2/3) ... [2025-03-08 22:52:55,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb10c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:52:55, skipping insertion in model container [2025-03-08 22:52:55,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:52:55" (3/3) ... [2025-03-08 22:52:55,519 INFO L128 eAbstractionObserver]: Analyzing ICFG scopes2.c [2025-03-08 22:52:55,530 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 22:52:55,533 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG scopes2.c that has 1 procedures, 15 locations, 1 initial locations, 0 loop locations, and 5 error locations. [2025-03-08 22:52:55,566 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 22:52:55,577 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@700a3428, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 22:52:55,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-08 22:52:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 14 states have internal predecessors, (15), 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) [2025-03-08 22:52:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-08 22:52:55,586 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:55,587 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-08 22:52:55,587 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2025-03-08 22:52:55,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:55,593 INFO L85 PathProgramCache]: Analyzing trace with hash 42910922, now seen corresponding path program 1 times [2025-03-08 22:52:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784942406] [2025-03-08 22:52:55,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:55,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-08 22:52:55,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-08 22:52:55,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:55,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 22:52:55,677 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 22:52:55,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-08 22:52:55,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-08 22:52:55,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:55,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 22:52:55,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 22:52:55,708 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 22:52:55,709 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2025-03-08 22:52:55,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-03-08 22:52:55,711 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2025-03-08 22:52:55,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2025-03-08 22:52:55,712 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 5 remaining) [2025-03-08 22:52:55,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 22:52:55,716 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-08 22:52:55,735 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 22:52:55,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 10:52:55 BoogieIcfgContainer [2025-03-08 22:52:55,739 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 22:52:55,740 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 22:52:55,740 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 22:52:55,740 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 22:52:55,741 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:52:55" (3/4) ... [2025-03-08 22:52:55,742 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-08 22:52:55,775 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 2. [2025-03-08 22:52:55,809 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 22:52:55,810 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 22:52:55,810 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 22:52:55,811 INFO L158 Benchmark]: Toolchain (without parser) took 687.76ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 68.2MB in the end (delta: 41.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-08 22:52:55,811 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 22:52:55,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 130.61ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 99.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 22:52:55,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.30ms. Allocated memory is still 142.6MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 22:52:55,813 INFO L158 Benchmark]: Boogie Preprocessor took 28.91ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 96.7MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 22:52:55,815 INFO L158 Benchmark]: IcfgBuilder took 204.43ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 86.1MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 22:52:55,815 INFO L158 Benchmark]: TraceAbstraction took 225.47ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 73.0MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 22:52:55,815 INFO L158 Benchmark]: Witness Printer took 70.14ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 68.2MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 22:52:55,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 130.61ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 99.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.30ms. Allocated memory is still 142.6MB. Free memory is still 98.4MB. There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.91ms. Allocated memory is still 142.6MB. Free memory was 97.8MB in the beginning and 96.7MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 204.43ms. Allocated memory is still 142.6MB. Free memory was 96.7MB in the beginning and 86.1MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 225.47ms. Allocated memory is still 142.6MB. Free memory was 85.0MB in the beginning and 73.0MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 70.14ms. Allocated memory is still 142.6MB. Free memory was 73.0MB in the beginning and 68.2MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. 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: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); [L8] COND TRUE __VERIFIER_nondet_int() [L10] int myNumberA = 7; [L10] int myNumberA = 7; [L11] myPointerA = &myNumberA [L10] int myNumberA = 7; [L15] int myNumberB = 3; [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB VAL [myPointerA={5:0}, myPointerB={2:0}] [L18] \read(*myPointerA) - UnprovableResult [Line: 4]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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 1 procedures, 15 locations, 15 edges, 5 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=15occurred 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, 5 NumberOfCodeBlocks, 5 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 proved your program to be incorrect! [2025-03-08 22:52:55,831 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)