./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex6.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex6.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 17c86d2b8a28fdd005d6739fc4a1f20e5e9dce3ceff149b41d42da89d2ce4175 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:42:08,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:42:08,818 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-01-10 01:42:08,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:42:08,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:42:08,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:42:08,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:42:08,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:42:08,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:42:08,855 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:42:08,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:42:08,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:42:08,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:42:08,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:42:08,856 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:42:08,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:42:08,860 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:42:08,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:42:08,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:42:08,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:42:08,861 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) 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 -> 17c86d2b8a28fdd005d6739fc4a1f20e5e9dce3ceff149b41d42da89d2ce4175 [2025-01-10 01:42:09,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:42:09,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:42:09,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:42:09,147 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:42:09,148 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:42:09,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex6.i [2025-01-10 01:42:10,345 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d9019a86/db325bd9309a4642b5c76a4a87243fdf/FLAG40ff94496 [2025-01-10 01:42:10,576 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:42:10,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/rec_malloc_ex6.i [2025-01-10 01:42:10,587 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d9019a86/db325bd9309a4642b5c76a4a87243fdf/FLAG40ff94496 [2025-01-10 01:42:10,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0d9019a86/db325bd9309a4642b5c76a4a87243fdf [2025-01-10 01:42:10,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:42:10,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:42:10,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:42:10,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:42:10,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:42:10,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db62278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10, skipping insertion in model container [2025-01-10 01:42:10,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,623 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:42:10,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:42:10,727 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:42:10,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:42:10,750 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:42:10,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10 WrapperNode [2025-01-10 01:42:10,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:42:10,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:42:10,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:42:10,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:42:10,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,776 INFO L138 Inliner]: procedures = 12, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2025-01-10 01:42:10,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:42:10,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:42:10,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:42:10,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:42:10,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,795 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [6, 3, 1]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 4 writes are split as follows [2, 1, 1]. [2025-01-10 01:42:10,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,800 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,802 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,808 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,809 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:42:10,811 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:42:10,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:42:10,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:42:10,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (1/1) ... [2025-01-10 01:42:10,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:42:10,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:42:10,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 01:42:10,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 01:42:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 01:42:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure g [2025-01-10 01:42:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:42:10,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 01:42:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 01:42:10,925 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:42:10,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:42:11,031 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-01-10 01:42:11,031 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:42:11,037 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:42:11,037 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:42:11,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:42:11 BoogieIcfgContainer [2025-01-10 01:42:11,038 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:42:11,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:42:11,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:42:11,042 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:42:11,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:42:10" (1/3) ... [2025-01-10 01:42:11,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afb0154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:42:11, skipping insertion in model container [2025-01-10 01:42:11,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:42:10" (2/3) ... [2025-01-10 01:42:11,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afb0154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:42:11, skipping insertion in model container [2025-01-10 01:42:11,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:42:11" (3/3) ... [2025-01-10 01:42:11,045 INFO L128 eAbstractionObserver]: Analyzing ICFG rec_malloc_ex6.i [2025-01-10 01:42:11,054 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:42:11,056 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rec_malloc_ex6.i that has 2 procedures, 29 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-01-10 01:42:11,094 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:42:11,107 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=LoopHeads, 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;@700fa0f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:42:11,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-01-10 01:42:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.588235294117647) internal successors, (27), 27 states have internal predecessors, (27), 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) [2025-01-10 01:42:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-01-10 01:42:11,113 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 01:42:11,113 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-01-10 01:42:11,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2025-01-10 01:42:11,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:42:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash 44751, now seen corresponding path program 1 times [2025-01-10 01:42:11,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:42:11,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308826421] [2025-01-10 01:42:11,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:42:11,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:42:11,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 01:42:11,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 01:42:11,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:42:11,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:42:11,205 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:42:11,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 01:42:11,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 01:42:11,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:42:11,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:42:11,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 01:42:11,240 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:42:11,241 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2025-01-10 01:42:11,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2025-01-10 01:42:11,242 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2025-01-10 01:42:11,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2025-01-10 01:42:11,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2025-01-10 01:42:11,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2025-01-10 01:42:11,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2025-01-10 01:42:11,244 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2025-01-10 01:42:11,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:42:11,247 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-10 01:42:11,263 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 01:42:11,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:42:11 BoogieIcfgContainer [2025-01-10 01:42:11,267 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 01:42:11,267 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 01:42:11,267 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 01:42:11,268 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 01:42:11,269 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:42:11" (3/4) ... [2025-01-10 01:42:11,269 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-01-10 01:42:11,296 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 2. [2025-01-10 01:42:11,326 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-10 01:42:11,326 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-10 01:42:11,326 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 01:42:11,327 INFO L158 Benchmark]: Toolchain (without parser) took 720.84ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 78.6MB in the end (delta: 44.6MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-01-10 01:42:11,328 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:42:11,328 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.72ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 112.8MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 01:42:11,328 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.60ms. Allocated memory is still 167.8MB. Free memory was 112.8MB in the beginning and 111.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:42:11,329 INFO L158 Benchmark]: Boogie Preprocessor took 32.80ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:42:11,329 INFO L158 Benchmark]: RCFGBuilder took 226.58ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 97.5MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 01:42:11,330 INFO L158 Benchmark]: TraceAbstraction took 227.73ms. Allocated memory is still 167.8MB. Free memory was 97.1MB in the beginning and 83.8MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 01:42:11,330 INFO L158 Benchmark]: Witness Printer took 58.68ms. Allocated memory is still 167.8MB. Free memory was 83.6MB in the beginning and 78.6MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 01:42:11,331 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 118.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.72ms. Allocated memory is still 167.8MB. Free memory was 123.2MB in the beginning and 112.8MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.60ms. Allocated memory is still 167.8MB. Free memory was 112.8MB in the beginning and 111.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.80ms. Allocated memory is still 167.8MB. Free memory was 111.6MB in the beginning and 110.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.58ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 97.5MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 227.73ms. Allocated memory is still 167.8MB. Free memory was 97.1MB in the beginning and 83.8MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 58.68ms. Allocated memory is still 167.8MB. Free memory was 83.6MB in the beginning and 78.6MB in the end (delta: 5.0MB). 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: 13]: integer overflow possible integer overflow possible We found a FailurePath: [L46] int *p1 = malloc(sizeof(int)); [L47] int *p2 = malloc(sizeof(int)); [L49] *p1 = __VERIFIER_nondet_int() [L50] *p2 = __VERIFIER_nondet_int() [L52] CALL f(p1,p2) [L13] EXPR \read(*p) [L13] EXPR \read(*q) [L13] *p + *q VAL [p={-2:0}, q={-3:0}] - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 36]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 36]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 8 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=29occurred 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, 3 NumberOfCodeBlocks, 3 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! [2025-01-10 01:42:11,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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(OVERFLOW)