./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_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_postdec_44_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 b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 17:23:19,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 17:23:19,399 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-02-06 17:23:19,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 17:23:19,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 17:23:19,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 17:23:19,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 17:23:19,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 17:23:19,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 17:23:19,424 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 17:23:19,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 17:23:19,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 17:23:19,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 17:23:19,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 17:23:19,424 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 17:23:19,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 17:23:19,425 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:23:19,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 17:23:19,425 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 17:23:19,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 17:23:19,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 17:23:19,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 17:23:19,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 17:23:19,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 17:23:19,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 17:23:19,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 17:23:19,426 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 -> b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 [2025-02-06 17:23:19,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 17:23:19,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 17:23:19,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 17:23:19,662 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 17:23:19,662 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 17:23:19,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2025-02-06 17:23:20,828 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6cd15d087/cc7911fa7528441482712fa38caf1637/FLAG68746cecf [2025-02-06 17:23:21,187 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 17:23:21,188 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2025-02-06 17:23:21,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6cd15d087/cc7911fa7528441482712fa38caf1637/FLAG68746cecf [2025-02-06 17:23:21,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6cd15d087/cc7911fa7528441482712fa38caf1637 [2025-02-06 17:23:21,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 17:23:21,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 17:23:21,381 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 17:23:21,381 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 17:23:21,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 17:23:21,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:23:21" (1/1) ... [2025-02-06 17:23:21,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8fa3d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:21, skipping insertion in model container [2025-02-06 17:23:21,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:23:21" (1/1) ... [2025-02-06 17:23:21,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 17:23:21,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:23:21,977 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 17:23:22,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:23:22,118 INFO L204 MainTranslator]: Completed translation [2025-02-06 17:23:22,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22 WrapperNode [2025-02-06 17:23:22,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 17:23:22,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 17:23:22,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 17:23:22,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 17:23:22,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,154 INFO L138 Inliner]: procedures = 500, calls = 29, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 67 [2025-02-06 17:23:22,154 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 17:23:22,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 17:23:22,155 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 17:23:22,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 17:23:22,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,177 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 17:23:22,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,181 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,181 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 17:23:22,188 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 17:23:22,188 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 17:23:22,188 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 17:23:22,189 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (1/1) ... [2025-02-06 17:23:22,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:23:22,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 17:23:22,212 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 17:23:22,214 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 17:23:22,235 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-06 17:23:22,236 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-06 17:23:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 17:23:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 17:23:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 17:23:22,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 17:23:22,352 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 17:23:22,354 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 17:23:22,455 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2025-02-06 17:23:22,456 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 17:23:22,463 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 17:23:22,464 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 17:23:22,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:23:22 BoogieIcfgContainer [2025-02-06 17:23:22,464 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 17:23:22,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 17:23:22,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 17:23:22,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 17:23:22,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:23:21" (1/3) ... [2025-02-06 17:23:22,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704e7900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:23:22, skipping insertion in model container [2025-02-06 17:23:22,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:22" (2/3) ... [2025-02-06 17:23:22,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704e7900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:23:22, skipping insertion in model container [2025-02-06 17:23:22,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:23:22" (3/3) ... [2025-02-06 17:23:22,474 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2025-02-06 17:23:22,486 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 17:23:22,487 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 17:23:22,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 17:23:22,539 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;@73896d80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 17:23:22,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 17:23:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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 17:23:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 17:23:22,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 17:23:22,549 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 17:23:22,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 17:23:22,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 17:23:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash 643834132, now seen corresponding path program 1 times [2025-02-06 17:23:22,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 17:23:22,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784721813] [2025-02-06 17:23:22,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 17:23:22,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 17:23:22,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 17:23:22,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 17:23:22,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:23:22,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:23:22,682 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 17:23:22,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 17:23:22,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 17:23:22,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:23:22,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:23:22,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 17:23:22,728 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 17:23:22,728 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-06 17:23:22,730 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-06 17:23:22,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 17:23:22,735 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 17:23:22,751 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 17:23:22,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 05:23:22 BoogieIcfgContainer [2025-02-06 17:23:22,756 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 17:23:22,757 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 17:23:22,757 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 17:23:22,757 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 17:23:22,758 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:23:22" (3/4) ... [2025-02-06 17:23:22,760 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 17:23:22,760 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 17:23:22,761 INFO L158 Benchmark]: Toolchain (without parser) took 1380.99ms. Allocated memory is still 142.6MB. Free memory was 109.9MB in the beginning and 82.4MB in the end (delta: 27.5MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2025-02-06 17:23:22,761 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:22,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.34ms. Allocated memory is still 142.6MB. Free memory was 109.5MB in the beginning and 48.9MB in the end (delta: 60.6MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-02-06 17:23:22,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.32ms. Allocated memory is still 142.6MB. Free memory was 48.9MB in the beginning and 46.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:22,762 INFO L158 Benchmark]: Boogie Preprocessor took 31.54ms. Allocated memory is still 142.6MB. Free memory was 46.2MB in the beginning and 44.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:22,762 INFO L158 Benchmark]: IcfgBuilder took 276.45ms. Allocated memory is still 142.6MB. Free memory was 44.8MB in the beginning and 100.5MB in the end (delta: -55.7MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2025-02-06 17:23:22,763 INFO L158 Benchmark]: TraceAbstraction took 289.70ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 82.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 17:23:22,763 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 142.6MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:22,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.34ms. Allocated memory is still 142.6MB. Free memory was 109.5MB in the beginning and 48.9MB in the end (delta: 60.6MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.32ms. Allocated memory is still 142.6MB. Free memory was 48.9MB in the beginning and 46.6MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.54ms. Allocated memory is still 142.6MB. Free memory was 46.2MB in the beginning and 44.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 276.45ms. Allocated memory is still 142.6MB. Free memory was 44.8MB in the beginning and 100.5MB in the end (delta: -55.7MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * TraceAbstraction took 289.70ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 82.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 142.6MB. Free memory is still 82.4MB. 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565, overapproximation of fgets at line 1563. 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] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_postdec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, funcPtr={-1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] data = atoi(inputBuffer) [L1572] CALL funcPtr(data) [L1551] 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: 1551]: 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, 24 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=24occurred 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 [2025-02-06 17:23:22,780 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_postdec_44_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 b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 17:23:24,647 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 17:23:24,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-02-06 17:23:24,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 17:23:24,753 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 17:23:24,754 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-02-06 17:23:24,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 17:23:24,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 17:23:24,780 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 17:23:24,780 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 17:23:24,781 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 17:23:24,781 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 17:23:24,781 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 17:23:24,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 17:23:24,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 17:23:24,782 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 17:23:24,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 17:23:24,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 17:23:24,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 17:23:24,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 17:23:24,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 17:23:24,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 17:23:24,783 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 17:23:24,783 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:23:24,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 17:23:24,784 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 17:23:24,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 17:23:24,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 17:23:24,785 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 17:23:24,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 17:23:24,785 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 -> b9fbf860090144fde4aeabd07a1f215f122b8dafbd1dea66fb6a578d61759014 [2025-02-06 17:23:25,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 17:23:25,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 17:23:25,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 17:23:25,040 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 17:23:25,040 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 17:23:25,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2025-02-06 17:23:26,220 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a0b9bf32/ce1c9816aa0842d190a4869e5260b20b/FLAGa5d0db559 [2025-02-06 17:23:26,537 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 17:23:26,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2025-02-06 17:23:26,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a0b9bf32/ce1c9816aa0842d190a4869e5260b20b/FLAGa5d0db559 [2025-02-06 17:23:26,578 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6a0b9bf32/ce1c9816aa0842d190a4869e5260b20b [2025-02-06 17:23:26,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 17:23:26,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 17:23:26,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 17:23:26,583 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 17:23:26,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 17:23:26,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:23:26" (1/1) ... [2025-02-06 17:23:26,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5b4ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:26, skipping insertion in model container [2025-02-06 17:23:26,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 05:23:26" (1/1) ... [2025-02-06 17:23:26,625 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 17:23:27,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:23:27,140 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 17:23:27,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 17:23:27,339 INFO L204 MainTranslator]: Completed translation [2025-02-06 17:23:27,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27 WrapperNode [2025-02-06 17:23:27,340 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 17:23:27,341 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 17:23:27,341 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 17:23:27,341 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 17:23:27,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,383 INFO L138 Inliner]: procedures = 505, calls = 29, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 66 [2025-02-06 17:23:27,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 17:23:27,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 17:23:27,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 17:23:27,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 17:23:27,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,404 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 17:23:27,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,410 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,412 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,414 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 17:23:27,415 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 17:23:27,415 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 17:23:27,415 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 17:23:27,416 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (1/1) ... [2025-02-06 17:23:27,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 17:23:27,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 17:23:27,440 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 17:23:27,443 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 17:23:27,458 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-06 17:23:27,458 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-06 17:23:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 17:23:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 17:23:27,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 17:23:27,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 17:23:27,561 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 17:23:27,563 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 17:23:27,669 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-02-06 17:23:27,669 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 17:23:27,678 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 17:23:27,679 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 17:23:27,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:23:27 BoogieIcfgContainer [2025-02-06 17:23:27,679 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 17:23:27,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 17:23:27,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 17:23:27,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 17:23:27,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 05:23:26" (1/3) ... [2025-02-06 17:23:27,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ed0bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:23:27, skipping insertion in model container [2025-02-06 17:23:27,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 05:23:27" (2/3) ... [2025-02-06 17:23:27,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ed0bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 05:23:27, skipping insertion in model container [2025-02-06 17:23:27,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:23:27" (3/3) ... [2025-02-06 17:23:27,687 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i [2025-02-06 17:23:27,696 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 17:23:27,697 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_44_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 17:23:27,730 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 17:23:27,738 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;@5f18d8ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 17:23:27,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 17:23:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 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 17:23:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 17:23:27,745 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 17:23:27,745 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 17:23:27,745 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-06 17:23:27,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 17:23:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash 643834132, now seen corresponding path program 1 times [2025-02-06 17:23:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 17:23:27,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131989734] [2025-02-06 17:23:27,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 17:23:27,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 17:23:27,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 17:23:27,759 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 17:23:27,760 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 17:23:27,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 17:23:27,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 17:23:27,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:23:27,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:23:27,932 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 17:23:27,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 17:23:27,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 17:23:27,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 17:23:27,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 17:23:27,981 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-06 17:23:27,986 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 17:23:27,988 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-06 17:23:27,989 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-06 17:23:27,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 17:23:28,190 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 17:23:28,193 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 17:23:28,207 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 17:23:28,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 05:23:28 BoogieIcfgContainer [2025-02-06 17:23:28,210 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 17:23:28,210 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 17:23:28,210 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 17:23:28,210 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 17:23:28,211 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 05:23:27" (3/4) ... [2025-02-06 17:23:28,213 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 17:23:28,214 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 17:23:28,214 INFO L158 Benchmark]: Toolchain (without parser) took 1633.00ms. Allocated memory is still 117.4MB. Free memory was 89.0MB in the beginning and 78.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2025-02-06 17:23:28,215 INFO L158 Benchmark]: CDTParser took 2.52ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 62.2MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:28,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 757.97ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 75.9MB in the end (delta: 12.9MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2025-02-06 17:23:28,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.16ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 72.6MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:28,216 INFO L158 Benchmark]: Boogie Preprocessor took 29.99ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.5MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 17:23:28,216 INFO L158 Benchmark]: IcfgBuilder took 264.56ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 56.8MB in the end (delta: 13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 17:23:28,217 INFO L158 Benchmark]: TraceAbstraction took 528.72ms. Allocated memory is still 117.4MB. Free memory was 56.0MB in the beginning and 78.6MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:28,217 INFO L158 Benchmark]: Witness Printer took 3.37ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 78.0MB in the end (delta: 650.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 17:23:28,218 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.52ms. Allocated memory is still 83.9MB. Free memory was 62.2MB in the beginning and 62.2MB in the end (delta: 37.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 757.97ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 75.9MB in the end (delta: 12.9MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.16ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 72.6MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.99ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 70.5MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 264.56ms. Allocated memory is still 117.4MB. Free memory was 70.5MB in the beginning and 56.8MB in the end (delta: 13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 528.72ms. Allocated memory is still 117.4MB. Free memory was 56.0MB in the beginning and 78.6MB in the end (delta: -22.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.37ms. Allocated memory is still 117.4MB. Free memory was 78.6MB in the beginning and 78.0MB in the end (delta: 650.2kB). 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1565, overapproximation of fgets at line 1563. 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] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_postdec_44_bad() [L1558] int data; [L1559] void (*funcPtr) (int) = badSink; [L1560] data = 0 [L1562] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, funcPtr={-1:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1563] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1565] data = atoi(inputBuffer) [L1572] CALL funcPtr(data) [L1551] 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: 1551]: 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, 24 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=24occurred 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 [2025-02-06 17:23:28,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample