./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.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/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.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 acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:26:39,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:26:39,742 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-01-10 05:26:39,745 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:26:39,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:26:39,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:26:39,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:26:39,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:26:39,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:26:39,763 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:26:39,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:26:39,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:26:39,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:26:39,763 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:26:39,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:26:39,764 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:39,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:39,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:39,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:39,765 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:26:39,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:39,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:39,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:39,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:39,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:26:39,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:26:39,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:26:39,766 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 -> acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 [2025-01-10 05:26:40,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:26:40,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:26:40,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:26:40,039 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:26:40,039 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:26:40,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2025-01-10 05:26:41,314 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5960506c5/c602015e62d1461a9c3d6205e3b1771e/FLAG5c241f601 [2025-01-10 05:26:41,734 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:26:41,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2025-01-10 05:26:41,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5960506c5/c602015e62d1461a9c3d6205e3b1771e/FLAG5c241f601 [2025-01-10 05:26:41,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5960506c5/c602015e62d1461a9c3d6205e3b1771e [2025-01-10 05:26:41,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:26:41,901 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:26:41,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:41,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:26:41,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:26:41,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:41" (1/1) ... [2025-01-10 05:26:41,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3aca65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:41, skipping insertion in model container [2025-01-10 05:26:41,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:41" (1/1) ... [2025-01-10 05:26:41,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:26:42,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:42,443 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:26:42,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:42,585 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:26:42,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42 WrapperNode [2025-01-10 05:26:42,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:42,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:42,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:26:42,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:26:42,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,611 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,628 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-01-10 05:26:42,629 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:42,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:26:42,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:26:42,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:26:42,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,655 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:26:42,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,663 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,675 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:26:42,676 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:26:42,679 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:26:42,680 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:26:42,680 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (1/1) ... [2025-01-10 05:26:42,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:26:42,718 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 05:26:42,720 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 05:26:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:26:42,760 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:26:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:26:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:26:42,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:26:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 05:26:42,854 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:26:42,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:26:42,928 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2025-01-10 05:26:42,928 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:26:42,938 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:26:42,940 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:26:42,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:42 BoogieIcfgContainer [2025-01-10 05:26:42,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:26:42,942 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:26:42,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:26:42,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:26:42,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:26:41" (1/3) ... [2025-01-10 05:26:42,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a300179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:42, skipping insertion in model container [2025-01-10 05:26:42,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:42" (2/3) ... [2025-01-10 05:26:42,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a300179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:42, skipping insertion in model container [2025-01-10 05:26:42,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:42" (3/3) ... [2025-01-10 05:26:42,950 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2025-01-10 05:26:42,964 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:26:42,966 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:26:43,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:26:43,026 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;@59329cac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:26:43,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:26:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:26:43,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:26:43,036 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:26:43,036 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:26:43,037 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:26:43,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:26:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2025-01-10 05:26:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:26:43,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117452818] [2025-01-10 05:26:43,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:26:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:26:43,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:26:43,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:26:43,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:43,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:43,181 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:26:43,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:26:43,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:26:43,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:43,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:43,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 05:26:43,214 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:26:43,215 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:26:43,216 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:26:43,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 05:26:43,219 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-10 05:26:43,245 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:26:43,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:26:43 BoogieIcfgContainer [2025-01-10 05:26:43,248 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:26:43,248 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:26:43,249 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:26:43,249 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:26:43,250 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:42" (3/4) ... [2025-01-10 05:26:43,251 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:26:43,252 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:26:43,253 INFO L158 Benchmark]: Toolchain (without parser) took 1355.12ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 77.6MB in the end (delta: 25.4MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2025-01-10 05:26:43,253 INFO L158 Benchmark]: CDTParser took 3.57ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:43,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.07ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 42.3MB in the end (delta: 60.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-01-10 05:26:43,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.12ms. Allocated memory is still 142.6MB. Free memory was 42.3MB in the beginning and 39.8MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:26:43,253 INFO L158 Benchmark]: Boogie Preprocessor took 45.96ms. Allocated memory is still 142.6MB. Free memory was 39.8MB in the beginning and 37.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:43,254 INFO L158 Benchmark]: RCFGBuilder took 264.68ms. Allocated memory is still 142.6MB. Free memory was 37.9MB in the beginning and 95.1MB in the end (delta: -57.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2025-01-10 05:26:43,254 INFO L158 Benchmark]: TraceAbstraction took 305.80ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 77.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 05:26:43,254 INFO L158 Benchmark]: Witness Printer took 3.71ms. Allocated memory is still 142.6MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:43,255 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.57ms. Allocated memory is still 201.3MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 685.07ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 42.3MB in the end (delta: 60.7MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.12ms. Allocated memory is still 142.6MB. Free memory was 42.3MB in the beginning and 39.8MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.96ms. Allocated memory is still 142.6MB. Free memory was 39.8MB in the beginning and 37.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 264.68ms. Allocated memory is still 142.6MB. Free memory was 37.9MB in the beginning and 95.1MB in the end (delta: -57.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 305.80ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 77.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.71ms. Allocated memory is still 142.6MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556, overapproximation of fgets at line 1554. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1576] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1567]: 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, 22 locations, 2 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=22occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:26:43,273 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-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/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.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 acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:26:45,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:26:45,610 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-01-10 05:26:45,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:26:45,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:26:45,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-01-10 05:26:45,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:26:45,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:26:45,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:26:45,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:26:45,664 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:26:45,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:26:45,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:26:45,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:26:45,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:26:45,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:26:45,665 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:45,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:45,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:45,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:26:45,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:26:45,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:26:45,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:26:45,672 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 -> acdde09f23e703658bc515440a08ab5c81112e6ec51a1ab42bcc0fc0dc135831 [2025-01-10 05:26:45,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:26:45,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:26:45,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:26:45,936 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:26:45,936 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:26:45,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2025-01-10 05:26:47,407 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8506efc44/21919dfae8fb466aaecac082ed716cf1/FLAG3030951a4 [2025-01-10 05:26:47,856 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:26:47,857 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2025-01-10 05:26:47,888 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8506efc44/21919dfae8fb466aaecac082ed716cf1/FLAG3030951a4 [2025-01-10 05:26:48,015 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8506efc44/21919dfae8fb466aaecac082ed716cf1 [2025-01-10 05:26:48,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:26:48,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:26:48,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:48,021 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:26:48,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:26:48,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d047bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48, skipping insertion in model container [2025-01-10 05:26:48,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,078 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:26:48,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:48,598 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:26:48,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:48,811 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:26:48,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48 WrapperNode [2025-01-10 05:26:48,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:48,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:48,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:26:48,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:26:48,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,843 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-01-10 05:26:48,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:48,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:26:48,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:26:48,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:26:48,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,861 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:26:48,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,866 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:26:48,871 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:26:48,871 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:26:48,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:26:48,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (1/1) ... [2025-01-10 05:26:48,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:48,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:26:48,897 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 05:26:48,898 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 05:26:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:26:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:26:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 05:26:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:26:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:26:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:26:49,050 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:26:49,052 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:26:49,141 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2025-01-10 05:26:49,141 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:26:49,148 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:26:49,148 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:26:49,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:49 BoogieIcfgContainer [2025-01-10 05:26:49,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:26:49,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:26:49,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:26:49,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:26:49,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:26:48" (1/3) ... [2025-01-10 05:26:49,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:49, skipping insertion in model container [2025-01-10 05:26:49,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:48" (2/3) ... [2025-01-10 05:26:49,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:49, skipping insertion in model container [2025-01-10 05:26:49,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:49" (3/3) ... [2025-01-10 05:26:49,156 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i [2025-01-10 05:26:49,168 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:26:49,169 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_31_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:26:49,219 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:26:49,226 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;@1e3762cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:26:49,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:26:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:26:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:26:49,232 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:26:49,232 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:26:49,233 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:26:49,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:26:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2025-01-10 05:26:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:26:49,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2112409965] [2025-01-10 05:26:49,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:26:49,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:26:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:26:49,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 05:26:49,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 05:26:49,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:26:49,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:26:49,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:49,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:49,340 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:26:49,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:26:49,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:26:49,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:49,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:49,371 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 05:26:49,373 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:26:49,374 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:26:49,375 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:26:49,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 05:26:49,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:26:49,580 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-10 05:26:49,601 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:26:49,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:26:49 BoogieIcfgContainer [2025-01-10 05:26:49,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:26:49,607 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:26:49,607 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:26:49,607 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:26:49,608 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:49" (3/4) ... [2025-01-10 05:26:49,610 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:26:49,611 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:26:49,612 INFO L158 Benchmark]: Toolchain (without parser) took 1592.78ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 38.4MB in the end (delta: 18.0MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2025-01-10 05:26:49,612 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:49,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 791.88ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 50.1MB in the end (delta: 6.4MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2025-01-10 05:26:49,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.75ms. Allocated memory is still 83.9MB. Free memory was 50.1MB in the beginning and 47.3MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:49,614 INFO L158 Benchmark]: Boogie Preprocessor took 27.14ms. Allocated memory is still 83.9MB. Free memory was 47.3MB in the beginning and 44.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:49,614 INFO L158 Benchmark]: RCFGBuilder took 277.07ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 31.9MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 05:26:49,614 INFO L158 Benchmark]: TraceAbstraction took 456.37ms. Allocated memory is still 83.9MB. Free memory was 31.1MB in the beginning and 38.4MB in the end (delta: -7.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:49,614 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:49,617 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 83.9MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 791.88ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 50.1MB in the end (delta: 6.4MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.75ms. Allocated memory is still 83.9MB. Free memory was 50.1MB in the beginning and 47.3MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.14ms. Allocated memory is still 83.9MB. Free memory was 47.3MB in the beginning and 44.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 277.07ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 31.9MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 456.37ms. Allocated memory is still 83.9MB. Free memory was 31.1MB in the beginning and 38.4MB in the end (delta: -7.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 83.9MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556, overapproximation of fgets at line 1554. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1576] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_31_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1564] int dataCopy = data; [L1565] int data = dataCopy; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1567]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=22occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:26:49,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample