./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc 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_sub_18_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 cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 17:25:12,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 17:25:12,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-02-06 17:25:12,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 17:25:12,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 17:25:12,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 17:25:12,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 17:25:12,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 17:25:12,905 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 17:25:12,905 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 17:25:12,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 17:25:12,906 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 17:25:12,906 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 17:25:12,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 17:25:12,906 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 17:25:12,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 17:25:12,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 17:25:12,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 17:25:12,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 17:25:12,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 17:25:12,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 17:25:12,908 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 17:25:12,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 17:25:12,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:25:12,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 17:25:12,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 17:25:12,909 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 17:25:12,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 17:25:12,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 17:25:12,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 17:25:12,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 17:25:12,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 17:25:12,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 17:25:12,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 17:25:12,910 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 -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2025-02-06 17:25:13,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 17:25:13,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 17:25:13,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 17:25:13,219 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 17:25:13,220 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 17:25:13,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2025-02-06 17:25:14,527 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e1e8b2d17/9424f8027b224d94a6ad165219d96b3f/FLAGbacc74ee7 [2025-02-06 17:25:14,880 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 17:25:14,882 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2025-02-06 17:25:14,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e1e8b2d17/9424f8027b224d94a6ad165219d96b3f/FLAGbacc74ee7 [2025-02-06 17:25:14,926 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e1e8b2d17/9424f8027b224d94a6ad165219d96b3f [2025-02-06 17:25:14,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 17:25:14,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 17:25:14,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 17:25:14,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 17:25:14,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 17:25:14,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:25:14" (1/1) ... [2025-02-06 17:25:14,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd9fed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:14, skipping insertion in model container [2025-02-06 17:25:14,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:25:14" (1/1) ... [2025-02-06 17:25:14,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 17:25:15,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:25:15,603 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 17:25:15,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:25:15,802 INFO L204 MainTranslator]: Completed translation [2025-02-06 17:25:15,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15 WrapperNode [2025-02-06 17:25:15,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 17:25:15,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 17:25:15,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 17:25:15,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 17:25:15,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,846 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-02-06 17:25:15,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 17:25:15,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 17:25:15,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 17:25:15,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 17:25:15,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,867 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]. [2025-02-06 17:25:15,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 17:25:15,876 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 17:25:15,876 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 17:25:15,876 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 17:25:15,876 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (1/1) ... [2025-02-06 17:25:15,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:25:15,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 17:25:15,906 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) [2025-02-06 17:25:15,909 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 [2025-02-06 17:25:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-06 17:25:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-06 17:25:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 17:25:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 17:25:15,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 17:25:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 17:25:16,057 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 17:25:16,059 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 17:25:16,188 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-02-06 17:25:16,188 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 17:25:16,200 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 17:25:16,200 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 17:25:16,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:25:16 BoogieIcfgContainer [2025-02-06 17:25:16,200 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 17:25:16,203 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 17:25:16,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 17:25:16,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 17:25:16,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:25:14" (1/3) ... [2025-02-06 17:25:16,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3a349d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:25:16, skipping insertion in model container [2025-02-06 17:25:16,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:15" (2/3) ... [2025-02-06 17:25:16,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d3a349d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:25:16, skipping insertion in model container [2025-02-06 17:25:16,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:25:16" (3/3) ... [2025-02-06 17:25:16,210 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2025-02-06 17:25:16,229 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 17:25:16,230 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 17:25:16,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 17:25:16,301 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;@4113764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 17:25:16,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 17:25:16,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2025-02-06 17:25:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 17:25:16,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 17:25:16,312 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 17:25:16,313 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 17:25:16,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 17:25:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1515949576, now seen corresponding path program 1 times [2025-02-06 17:25:16,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 17:25:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210998041] [2025-02-06 17:25:16,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 17:25:16,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 17:25:16,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 17:25:16,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 17:25:16,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:25:16,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:25:16,476 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 17:25:16,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 17:25:16,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 17:25:16,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:25:16,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:25:16,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 17:25:16,517 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 17:25:16,518 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-06 17:25:16,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-06 17:25:16,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 17:25:16,527 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 17:25:16,552 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 17:25:16,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 05:25:16 BoogieIcfgContainer [2025-02-06 17:25:16,556 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 17:25:16,557 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 17:25:16,557 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 17:25:16,558 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 17:25:16,558 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:25:16" (3/4) ... [2025-02-06 17:25:16,560 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 17:25:16,561 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 17:25:16,562 INFO L158 Benchmark]: Toolchain (without parser) took 1631.33ms. Allocated memory is still 167.8MB. Free memory was 130.6MB in the beginning and 122.7MB in the end (delta: 7.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2025-02-06 17:25:16,562 INFO L158 Benchmark]: CDTParser took 1.31ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:16,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 871.77ms. Allocated memory is still 167.8MB. Free memory was 130.6MB in the beginning and 71.2MB in the end (delta: 59.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-02-06 17:25:16,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.95ms. Allocated memory is still 167.8MB. Free memory was 71.2MB in the beginning and 69.0MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 17:25:16,564 INFO L158 Benchmark]: Boogie Preprocessor took 27.46ms. Allocated memory is still 167.8MB. Free memory was 69.0MB in the beginning and 67.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:16,565 INFO L158 Benchmark]: IcfgBuilder took 325.22ms. Allocated memory is still 167.8MB. Free memory was 67.4MB in the beginning and 54.9MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 17:25:16,565 INFO L158 Benchmark]: TraceAbstraction took 353.26ms. Allocated memory is still 167.8MB. Free memory was 54.0MB in the beginning and 122.7MB in the end (delta: -68.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:16,565 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 122.7MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:16,567 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 871.77ms. Allocated memory is still 167.8MB. Free memory was 130.6MB in the beginning and 71.2MB in the end (delta: 59.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.95ms. Allocated memory is still 167.8MB. Free memory was 71.2MB in the beginning and 69.0MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.46ms. Allocated memory is still 167.8MB. Free memory was 69.0MB in the beginning and 67.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 325.22ms. Allocated memory is still 167.8MB. Free memory was 67.4MB in the beginning and 54.9MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 353.26ms. Allocated memory is still 167.8MB. Free memory was 54.0MB in the beginning and 122.7MB in the end (delta: -68.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 122.7MB in the end (delta: 50.8kB). 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of fgets at line 1556. 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] [L1575] 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) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_18_bad() [L1550] int data; [L1551] data = 0 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] [L1555] 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] data - 1 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: 1568]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 12 NumberOfCodeBlocks, 12 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 [2025-02-06 17:25:16,584 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_sub_18_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 cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 17:25:18,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 17:25:18,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-02-06 17:25:18,988 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 17:25:18,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 17:25:18,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-02-06 17:25:19,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 17:25:19,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 17:25:19,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 17:25:19,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 17:25:19,010 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 17:25:19,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 17:25:19,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 17:25:19,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 17:25:19,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 17:25:19,011 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 17:25:19,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 17:25:19,012 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 17:25:19,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 17:25:19,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 17:25:19,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 17:25:19,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 17:25:19,012 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 17:25:19,012 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 17:25:19,013 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 17:25:19,013 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 17:25:19,013 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 17:25:19,013 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 17:25:19,013 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 17:25:19,013 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 17:25:19,013 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 17:25:19,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 17:25:19,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 17:25:19,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 17:25:19,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:25:19,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 17:25:19,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 17:25:19,014 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 17:25:19,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 17:25:19,015 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 17:25:19,015 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 17:25:19,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 17:25:19,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 17:25:19,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 17:25:19,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 17:25:19,015 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 -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2025-02-06 17:25:19,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 17:25:19,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 17:25:19,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 17:25:19,310 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 17:25:19,310 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 17:25:19,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2025-02-06 17:25:20,675 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ec7a0ca88/13ddd1869cfc40809fb86416e31a72d4/FLAG406334a13 [2025-02-06 17:25:21,068 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 17:25:21,069 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2025-02-06 17:25:21,097 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ec7a0ca88/13ddd1869cfc40809fb86416e31a72d4/FLAG406334a13 [2025-02-06 17:25:21,116 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ec7a0ca88/13ddd1869cfc40809fb86416e31a72d4 [2025-02-06 17:25:21,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 17:25:21,120 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 17:25:21,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 17:25:21,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 17:25:21,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 17:25:21,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:25:21" (1/1) ... [2025-02-06 17:25:21,130 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38bacb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:21, skipping insertion in model container [2025-02-06 17:25:21,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:25:21" (1/1) ... [2025-02-06 17:25:21,181 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 17:25:21,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:25:21,863 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 17:25:21,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:25:22,082 INFO L204 MainTranslator]: Completed translation [2025-02-06 17:25:22,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22 WrapperNode [2025-02-06 17:25:22,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 17:25:22,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 17:25:22,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 17:25:22,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 17:25:22,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,130 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2025-02-06 17:25:22,132 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 17:25:22,132 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 17:25:22,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 17:25:22,133 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 17:25:22,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,144 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,161 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]. [2025-02-06 17:25:22,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,168 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 17:25:22,175 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 17:25:22,176 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 17:25:22,176 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 17:25:22,177 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (1/1) ... [2025-02-06 17:25:22,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:25:22,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 17:25:22,211 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) [2025-02-06 17:25:22,214 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 [2025-02-06 17:25:22,239 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-06 17:25:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-06 17:25:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 17:25:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 17:25:22,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 17:25:22,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 17:25:22,380 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 17:25:22,382 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 17:25:22,496 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2025-02-06 17:25:22,496 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 17:25:22,503 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 17:25:22,504 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 17:25:22,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:25:22 BoogieIcfgContainer [2025-02-06 17:25:22,504 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 17:25:22,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 17:25:22,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 17:25:22,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 17:25:22,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:25:21" (1/3) ... [2025-02-06 17:25:22,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6f6ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:25:22, skipping insertion in model container [2025-02-06 17:25:22,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:25:22" (2/3) ... [2025-02-06 17:25:22,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6f6ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:25:22, skipping insertion in model container [2025-02-06 17:25:22,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:25:22" (3/3) ... [2025-02-06 17:25:22,513 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2025-02-06 17:25:22,526 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 17:25:22,528 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 17:25:22,575 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 17:25:22,585 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;@3f00db66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 17:25:22,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 17:25:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2025-02-06 17:25:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 17:25:22,595 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 17:25:22,595 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 17:25:22,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 17:25:22,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 17:25:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1515949576, now seen corresponding path program 1 times [2025-02-06 17:25:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 17:25:22,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665297956] [2025-02-06 17:25:22,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 17:25:22,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 17:25:22,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 17:25:22,620 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) [2025-02-06 17:25:22,622 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 [2025-02-06 17:25:22,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 17:25:22,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 17:25:22,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:25:22,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:25:22,762 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 17:25:22,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 17:25:22,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 17:25:22,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:25:22,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:25:22,823 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-06 17:25:22,852 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 17:25:22,853 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-06 17:25:22,856 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-06 17:25:22,868 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 [2025-02-06 17:25:23,057 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 [2025-02-06 17:25:23,061 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 17:25:23,076 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 17:25:23,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 05:25:23 BoogieIcfgContainer [2025-02-06 17:25:23,078 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 17:25:23,079 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 17:25:23,079 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 17:25:23,079 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 17:25:23,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:25:22" (3/4) ... [2025-02-06 17:25:23,081 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 17:25:23,081 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 17:25:23,082 INFO L158 Benchmark]: Toolchain (without parser) took 1962.28ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 81.5MB in the end (delta: 7.3MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2025-02-06 17:25:23,082 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:23,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 961.25ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 78.9MB in the end (delta: 10.0MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. [2025-02-06 17:25:23,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.02ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 75.7MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:23,083 INFO L158 Benchmark]: Boogie Preprocessor took 42.47ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 73.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:23,083 INFO L158 Benchmark]: IcfgBuilder took 328.72ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 60.6MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 17:25:23,084 INFO L158 Benchmark]: TraceAbstraction took 571.65ms. Allocated memory is still 117.4MB. Free memory was 60.6MB in the beginning and 81.6MB in the end (delta: -21.0MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2025-02-06 17:25:23,084 INFO L158 Benchmark]: Witness Printer took 2.79ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 81.5MB in the end (delta: 7.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:25:23,086 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 62.1MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 961.25ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 78.9MB in the end (delta: 10.0MB). Peak memory consumption was 66.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.02ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 75.7MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.47ms. Allocated memory is still 117.4MB. Free memory was 75.7MB in the beginning and 73.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 328.72ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 60.6MB in the end (delta: 12.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 571.65ms. Allocated memory is still 117.4MB. Free memory was 60.6MB in the beginning and 81.6MB in the end (delta: -21.0MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * Witness Printer took 2.79ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 81.5MB in the end (delta: 7.0kB). 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of fgets at line 1556. 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] [L1575] 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) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_18_bad() [L1550] int data; [L1551] data = 0 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] [L1555] 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] data - 1 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: 1568]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=23occurred 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, 12 NumberOfCodeBlocks, 12 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 [2025-02-06 17:25:23,101 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