./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d94197bb45011c55db64c4b2cad037cf69a2430f75ef8668b076bdef6ca69182 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 16:05:39,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 16:05:39,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 16:05:39,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 16:05:39,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 16:05:39,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 16:05:39,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 16:05:39,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 16:05:39,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 16:05:39,797 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 16:05:39,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 16:05:39,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 16:05:39,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 16:05:39,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 16:05:39,799 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 16:05:39,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 16:05:39,799 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 16:05:39,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 16:05:39,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 16:05:39,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 16:05:39,800 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 16:05:39,801 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 16:05:39,801 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 16:05:39,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 16:05:39,801 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 16:05:39,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 16:05:39,802 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 16:05:39,802 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 16:05:39,802 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 16:05:39,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 16:05:39,803 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 16:05:39,803 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 16:05:39,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 16:05:39,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 16:05:39,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 16:05:39,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 16:05:39,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 16:05:39,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 16:05:39,807 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 16:05:39,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 16:05:39,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 16:05:39,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 16:05:39,808 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d94197bb45011c55db64c4b2cad037cf69a2430f75ef8668b076bdef6ca69182 [2024-10-24 16:05:39,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 16:05:40,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 16:05:40,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 16:05:40,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 16:05:40,010 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 16:05:40,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2024-10-24 16:05:41,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 16:05:41,373 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 16:05:41,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/mult_array_unsafe.i [2024-10-24 16:05:41,383 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde1e65fe/14a28099a22d446992b7aca0da032b07/FLAGfde78576a [2024-10-24 16:05:41,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bde1e65fe/14a28099a22d446992b7aca0da032b07 [2024-10-24 16:05:41,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 16:05:41,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 16:05:41,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 16:05:41,400 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 16:05:41,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 16:05:41,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2683138f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41, skipping insertion in model container [2024-10-24 16:05:41,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 16:05:41,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 16:05:41,710 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 16:05:41,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 16:05:41,753 INFO L204 MainTranslator]: Completed translation [2024-10-24 16:05:41,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41 WrapperNode [2024-10-24 16:05:41,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 16:05:41,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 16:05:41,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 16:05:41,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 16:05:41,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,785 INFO L138 Inliner]: procedures = 115, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2024-10-24 16:05:41,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 16:05:41,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 16:05:41,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 16:05:41,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 16:05:41,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,799 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,811 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2024-10-24 16:05:41,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 16:05:41,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 16:05:41,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 16:05:41,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 16:05:41,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (1/1) ... [2024-10-24 16:05:41,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 16:05:41,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:05:41,847 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) [2024-10-24 16:05:41,853 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 [2024-10-24 16:05:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 16:05:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 16:05:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 16:05:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 16:05:41,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 16:05:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 16:05:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 16:05:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 16:05:41,956 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 16:05:41,958 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 16:05:42,085 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-10-24 16:05:42,085 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 16:05:42,102 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 16:05:42,102 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 16:05:42,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:05:42 BoogieIcfgContainer [2024-10-24 16:05:42,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 16:05:42,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 16:05:42,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 16:05:42,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 16:05:42,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:05:41" (1/3) ... [2024-10-24 16:05:42,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f83b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:05:42, skipping insertion in model container [2024-10-24 16:05:42,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:05:41" (2/3) ... [2024-10-24 16:05:42,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f83b248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:05:42, skipping insertion in model container [2024-10-24 16:05:42,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:05:42" (3/3) ... [2024-10-24 16:05:42,110 INFO L112 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe.i [2024-10-24 16:05:42,122 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 16:05:42,123 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-24 16:05:42,155 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 16:05:42,159 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;@46b1e791, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 16:05:42,160 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 16:05:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 2.0) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:05:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-24 16:05:42,169 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:05:42,170 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:05:42,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 16:05:42,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:05:42,175 INFO L85 PathProgramCache]: Analyzing trace with hash -547161581, now seen corresponding path program 1 times [2024-10-24 16:05:42,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:05:42,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680651386] [2024-10-24 16:05:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:05:42,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:05:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:05:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:05:42,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:05:42,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680651386] [2024-10-24 16:05:42,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680651386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:05:42,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:05:42,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 16:05:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229313687] [2024-10-24 16:05:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:05:42,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:05:42,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:05:42,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:05:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:05:42,521 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 2.0) internal successors, (28), 21 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-24 16:05:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:05:42,561 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2024-10-24 16:05:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:05:42,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-24 16:05:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:05:42,569 INFO L225 Difference]: With dead ends: 22 [2024-10-24 16:05:42,569 INFO L226 Difference]: Without dead ends: 21 [2024-10-24 16:05:42,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:05:42,575 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:05:42,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:05:42,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-24 16:05:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-24 16:05:42,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-10-24 16:05:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-10-24 16:05:42,600 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2024-10-24 16:05:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:05:42,601 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-10-24 16:05:42,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-10-24 16:05:42,601 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-10-24 16:05:42,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 16:05:42,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:05:42,602 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:05:42,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 16:05:42,602 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 16:05:42,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:05:42,603 INFO L85 PathProgramCache]: Analyzing trace with hash 217861104, now seen corresponding path program 1 times [2024-10-24 16:05:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:05:42,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534303178] [2024-10-24 16:05:42,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:05:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:05:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 16:05:42,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969580013] [2024-10-24 16:05:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:05:42,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:05:42,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:05:42,638 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) [2024-10-24 16:05:42,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 16:05:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 16:05:42,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 16:05:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 16:05:42,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 16:05:42,758 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 16:05:42,759 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2024-10-24 16:05:42,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-10-24 16:05:42,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-10-24 16:05:42,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-10-24 16:05:42,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-10-24 16:05:42,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-10-24 16:05:42,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-24 16:05:42,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 16:05:42,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:05:42,971 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 16:05:42,983 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 16:05:42,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:05:42 BoogieIcfgContainer [2024-10-24 16:05:42,986 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 16:05:42,986 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 16:05:42,986 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 16:05:42,986 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 16:05:42,987 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:05:42" (3/4) ... [2024-10-24 16:05:42,987 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-24 16:05:43,011 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 16:05:43,011 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 16:05:43,012 INFO L158 Benchmark]: Toolchain (without parser) took 1616.34ms. Allocated memory was 161.5MB in the beginning and 203.4MB in the end (delta: 41.9MB). Free memory was 117.6MB in the beginning and 164.1MB in the end (delta: -46.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 16:05:43,012 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 161.5MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 16:05:43,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.38ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 124.8MB in the end (delta: -7.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 16:05:43,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.40ms. Allocated memory is still 161.5MB. Free memory was 124.8MB in the beginning and 123.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 16:05:43,015 INFO L158 Benchmark]: Boogie Preprocessor took 34.71ms. Allocated memory is still 161.5MB. Free memory was 122.7MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 16:05:43,016 INFO L158 Benchmark]: RCFGBuilder took 281.24ms. Allocated memory is still 161.5MB. Free memory was 120.7MB in the beginning and 106.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 16:05:43,016 INFO L158 Benchmark]: TraceAbstraction took 881.49ms. Allocated memory was 161.5MB in the beginning and 203.4MB in the end (delta: 41.9MB). Free memory was 105.1MB in the beginning and 166.2MB in the end (delta: -61.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 16:05:43,016 INFO L158 Benchmark]: Witness Printer took 25.25ms. Allocated memory is still 203.4MB. Free memory was 166.2MB in the beginning and 164.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 16:05:43,018 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 161.5MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.38ms. Allocated memory is still 161.5MB. Free memory was 117.4MB in the beginning and 124.8MB in the end (delta: -7.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.40ms. Allocated memory is still 161.5MB. Free memory was 124.8MB in the beginning and 123.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.71ms. Allocated memory is still 161.5MB. Free memory was 122.7MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 281.24ms. Allocated memory is still 161.5MB. Free memory was 120.7MB in the beginning and 106.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 881.49ms. Allocated memory was 161.5MB in the beginning and 203.4MB in the end (delta: 41.9MB). Free memory was 105.1MB in the beginning and 166.2MB in the end (delta: -61.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 25.25ms. Allocated memory is still 203.4MB. Free memory was 166.2MB in the beginning and 164.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L513] int i, j; [L514] int length = __VERIFIER_nondet_int(); [L515] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L515] length = 1 VAL [length=1] [L516] int fac = __VERIFIER_nondet_int(); [L517] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L517] fac = 1 VAL [fac=1, length=1] [L518] int *arr = __builtin_alloca (length); [L519] int *arr2 = __builtin_alloca (fac*length); VAL [arr2={2:0}, arr={3:0}, fac=1, length=1] [L520] COND FALSE !(!arr || !arr2) [L521] i=0 VAL [arr2={2:0}, arr={3:0}, fac=1, i=0, length=1] [L521] COND TRUE i