./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_15_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_15_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 4b2e2f64888507ceaf0a48c0aaeb190d2e2c838953f1b8fa6b6d835aa7148429 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:27:34,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:27:34,450 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-01-10 05:27:34,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:27:34,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:27:34,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:27:34,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:27:34,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:27:34,485 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:27:34,485 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:27:34,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:27:34,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:27:34,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:27:34,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:27:34,486 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:27:34,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:27:34,487 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:27:34,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:27:34,488 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:27:34,488 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:27:34,488 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:27:34,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:34,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:34,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:34,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:34,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:34,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:27:34,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:27:34,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:27:34,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:27:34,490 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 -> 4b2e2f64888507ceaf0a48c0aaeb190d2e2c838953f1b8fa6b6d835aa7148429 [2025-01-10 05:27:34,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:27:34,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:27:34,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:27:34,742 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:27:34,742 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:27:34,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_15_bad.i [2025-01-10 05:27:35,893 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fe0298ffa/e97b1c6482ee48eebb0b24f3e8a46ac2/FLAGf0ab8d1ec [2025-01-10 05:27:36,282 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:27:36,282 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_15_bad.i [2025-01-10 05:27:36,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fe0298ffa/e97b1c6482ee48eebb0b24f3e8a46ac2/FLAGf0ab8d1ec [2025-01-10 05:27:36,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fe0298ffa/e97b1c6482ee48eebb0b24f3e8a46ac2 [2025-01-10 05:27:36,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:27:36,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:27:36,315 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:36,315 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:27:36,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:27:36,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:36" (1/1) ... [2025-01-10 05:27:36,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a374779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:36, skipping insertion in model container [2025-01-10 05:27:36,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:36" (1/1) ... [2025-01-10 05:27:36,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:27:37,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:37,020 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:27:37,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:37,163 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:27:37,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37 WrapperNode [2025-01-10 05:27:37,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:37,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:37,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:27:37,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:27:37,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,198 INFO L138 Inliner]: procedures = 498, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2025-01-10 05:27:37,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:37,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:27:37,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:27:37,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:27:37,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,209 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,218 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:27:37,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,222 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:27:37,227 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:27:37,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:27:37,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:27:37,231 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (1/1) ... [2025-01-10 05:27:37,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:37,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:37,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 05:27:37,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 05:27:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:27:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:27:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:27:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:27:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:27:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 05:27:37,511 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:27:37,513 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:27:37,704 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-01-10 05:27:37,705 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:27:37,712 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:27:37,713 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:27:37,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:37 BoogieIcfgContainer [2025-01-10 05:27:37,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:27:37,716 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:27:37,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:27:37,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:27:37,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:27:36" (1/3) ... [2025-01-10 05:27:37,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e282b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:37, skipping insertion in model container [2025-01-10 05:27:37,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:37" (2/3) ... [2025-01-10 05:27:37,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e282b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:37, skipping insertion in model container [2025-01-10 05:27:37,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:37" (3/3) ... [2025-01-10 05:27:37,728 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_15_bad.i [2025-01-10 05:27:37,744 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:27:37,747 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_15_bad.i that has 2 procedures, 30 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:27:37,799 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:27:37,815 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;@514b6e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:27:37,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:27:37,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 05:27:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 05:27:37,834 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:37,835 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:37,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:37,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash -851769054, now seen corresponding path program 1 times [2025-01-10 05:27:37,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:27:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737373300] [2025-01-10 05:27:37,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:27:37,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:27:37,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:27:37,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:37,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 05:27:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 05:27:37,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 05:27:37,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737373300] [2025-01-10 05:27:37,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737373300] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 05:27:37,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 05:27:37,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 05:27:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705568202] [2025-01-10 05:27:37,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 05:27:37,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 05:27:37,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 05:27:38,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 05:27:38,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:38,010 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 05:27:38,027 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2025-01-10 05:27:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 05:27:38,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-01-10 05:27:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 05:27:38,032 INFO L225 Difference]: With dead ends: 50 [2025-01-10 05:27:38,032 INFO L226 Difference]: Without dead ends: 18 [2025-01-10 05:27:38,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:38,036 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 05:27:38,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 05:27:38,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-10 05:27:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-01-10 05:27:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 05:27:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-01-10 05:27:38,057 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2025-01-10 05:27:38,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 05:27:38,058 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-01-10 05:27:38,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:38,059 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-01-10 05:27:38,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-10 05:27:38,060 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:38,060 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:38,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 05:27:38,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:38,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:38,060 INFO L85 PathProgramCache]: Analyzing trace with hash -933634968, now seen corresponding path program 1 times [2025-01-10 05:27:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:27:38,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117593683] [2025-01-10 05:27:38,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:27:38,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 05:27:38,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 05:27:38,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:38,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:38,106 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:27:38,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 05:27:38,117 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 05:27:38,117 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:38,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:38,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 05:27:38,129 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:27:38,130 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:27:38,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:27:38,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 05:27:38,133 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 05:27:38,145 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:27:38,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:27:38 BoogieIcfgContainer [2025-01-10 05:27:38,147 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:27:38,148 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:27:38,148 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:27:38,148 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:27:38,149 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:37" (3/4) ... [2025-01-10 05:27:38,150 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:27:38,150 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:27:38,151 INFO L158 Benchmark]: Toolchain (without parser) took 1837.23ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 70.6MB in the end (delta: 36.3MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2025-01-10 05:27:38,151 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 192.9MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:38,151 INFO L158 Benchmark]: CACSL2BoogieTranslator took 849.23ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 47.1MB in the end (delta: 59.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-01-10 05:27:38,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.80ms. Allocated memory is still 142.6MB. Free memory was 47.1MB in the beginning and 44.6MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:27:38,152 INFO L158 Benchmark]: Boogie Preprocessor took 28.09ms. Allocated memory is still 142.6MB. Free memory was 44.6MB in the beginning and 42.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:38,152 INFO L158 Benchmark]: RCFGBuilder took 486.16ms. Allocated memory is still 142.6MB. Free memory was 42.6MB in the beginning and 99.3MB in the end (delta: -56.6MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2025-01-10 05:27:38,152 INFO L158 Benchmark]: TraceAbstraction took 431.25ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 70.6MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 05:27:38,152 INFO L158 Benchmark]: Witness Printer took 2.51ms. Allocated memory is still 142.6MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:38,153 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 192.9MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 849.23ms. Allocated memory is still 142.6MB. Free memory was 106.9MB in the beginning and 47.1MB in the end (delta: 59.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.80ms. Allocated memory is still 142.6MB. Free memory was 47.1MB in the beginning and 44.6MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.09ms. Allocated memory is still 142.6MB. Free memory was 44.6MB in the beginning and 42.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 486.16ms. Allocated memory is still 142.6MB. Free memory was 42.6MB in the beginning and 99.3MB in the end (delta: -56.6MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 431.25ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 70.6MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.51ms. Allocated memory is still 142.6MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1575]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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] [L1587] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1587] 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] [L1588] CALL CWE191_Integer_Underflow__int_fgets_sub_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] case 6: [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] case 6: [L1559] data = atoi(inputBuffer) [L1573] case 7: VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] 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: 1575]: 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, 30 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 33 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:27:38,166 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 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_15_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 4b2e2f64888507ceaf0a48c0aaeb190d2e2c838953f1b8fa6b6d835aa7148429 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:27:40,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:27:40,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-01-10 05:27:40,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:27:40,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:27:40,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-01-10 05:27:40,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:27:40,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:27:40,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:27:40,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:27:40,432 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:27:40,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:27:40,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:27:40,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:27:40,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:27:40,433 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:27:40,434 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:27:40,434 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:27:40,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:27:40,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:27:40,435 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:27:40,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:40,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:40,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:40,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:40,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:27:40,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:40,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:40,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:40,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:40,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:27:40,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:27:40,437 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:27:40,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:27:40,438 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 05:27:40,438 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 05:27:40,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:27:40,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:27:40,438 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:27:40,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:27:40,438 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 -> 4b2e2f64888507ceaf0a48c0aaeb190d2e2c838953f1b8fa6b6d835aa7148429 [2025-01-10 05:27:40,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:27:40,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:27:40,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:27:40,679 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:27:40,679 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:27:40,680 INFO L431 ainManager$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_15_bad.i [2025-01-10 05:27:42,062 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dfb52e57d/823e68372f294efaa58ad43b9e83eb61/FLAG39301aeb2 [2025-01-10 05:27:42,540 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:27:42,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_15_bad.i [2025-01-10 05:27:42,569 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dfb52e57d/823e68372f294efaa58ad43b9e83eb61/FLAG39301aeb2 [2025-01-10 05:27:42,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dfb52e57d/823e68372f294efaa58ad43b9e83eb61 [2025-01-10 05:27:42,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:27:42,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:27:42,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:42,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:27:42,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:27:42,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:42" (1/1) ... [2025-01-10 05:27:42,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a678ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:42, skipping insertion in model container [2025-01-10 05:27:42,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:42" (1/1) ... [2025-01-10 05:27:42,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:27:43,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:43,135 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:27:43,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:43,341 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:27:43,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43 WrapperNode [2025-01-10 05:27:43,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:43,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:43,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:27:43,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:27:43,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,377 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,397 INFO L138 Inliner]: procedures = 503, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2025-01-10 05:27:43,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:43,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:27:43,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:27:43,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:27:43,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,410 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,419 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:27:43,420 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,420 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,424 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,453 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:27:43,461 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:27:43,461 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:27:43,461 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:27:43,462 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (1/1) ... [2025-01-10 05:27:43,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:43,488 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 05:27:43,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 05:27:43,505 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:27:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:27:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 05:27:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:27:43,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:27:43,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:27:43,637 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:27:43,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:27:43,758 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-01-10 05:27:43,758 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:27:43,764 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:27:43,765 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:27:43,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:43 BoogieIcfgContainer [2025-01-10 05:27:43,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:27:43,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:27:43,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:27:43,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:27:43,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:27:42" (1/3) ... [2025-01-10 05:27:43,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e206fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:43, skipping insertion in model container [2025-01-10 05:27:43,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:43" (2/3) ... [2025-01-10 05:27:43,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e206fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:43, skipping insertion in model container [2025-01-10 05:27:43,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:43" (3/3) ... [2025-01-10 05:27:43,775 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_15_bad.i [2025-01-10 05:27:43,785 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:27:43,787 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_15_bad.i that has 2 procedures, 30 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:27:43,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:27:43,824 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;@52a79298, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:27:43,824 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:27:43,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 05:27:43,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 05:27:43,830 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:43,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:43,831 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:43,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash -851769054, now seen corresponding path program 1 times [2025-01-10 05:27:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:27:43,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34657071] [2025-01-10 05:27:43,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:43,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:43,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 05:27:43,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 05:27:43,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:27:43,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:27:43,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:43,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 05:27:43,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 05:27:43,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 05:27:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 05:27:43,956 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 05:27:43,956 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 05:27:43,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34657071] [2025-01-10 05:27:43,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34657071] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 05:27:43,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 05:27:43,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 05:27:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647960419] [2025-01-10 05:27:43,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 05:27:43,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 05:27:43,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 05:27:43,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 05:27:43,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:43,975 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:43,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 05:27:43,992 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2025-01-10 05:27:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 05:27:43,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-01-10 05:27:43,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 05:27:43,998 INFO L225 Difference]: With dead ends: 49 [2025-01-10 05:27:43,998 INFO L226 Difference]: Without dead ends: 16 [2025-01-10 05:27:44,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:44,001 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 05:27:44,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 05:27:44,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-10 05:27:44,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-10 05:27:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 05:27:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-01-10 05:27:44,027 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2025-01-10 05:27:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 05:27:44,028 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-01-10 05:27:44,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-01-10 05:27:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-10 05:27:44,030 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:44,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:44,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 05:27:44,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:44,235 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:44,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:44,237 INFO L85 PathProgramCache]: Analyzing trace with hash -933634968, now seen corresponding path program 1 times [2025-01-10 05:27:44,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:27:44,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424835885] [2025-01-10 05:27:44,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:44,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:44,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:44,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 05:27:44,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 05:27:44,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 05:27:44,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 05:27:44,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:44,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:44,324 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:27:44,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-10 05:27:44,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-10 05:27:44,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:44,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:44,385 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 05:27:44,386 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:27:44,387 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:27:44,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:27:44,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 05:27:44,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:44,591 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 05:27:44,612 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:27:44,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:27:44 BoogieIcfgContainer [2025-01-10 05:27:44,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:27:44,616 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:27:44,616 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:27:44,616 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:27:44,617 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:43" (3/4) ... [2025-01-10 05:27:44,619 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:27:44,619 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:27:44,620 INFO L158 Benchmark]: Toolchain (without parser) took 2033.10ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 70.4MB in the end (delta: 42.5MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2025-01-10 05:27:44,620 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:44,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 755.05ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 48.9MB in the end (delta: 63.9MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-01-10 05:27:44,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.83ms. Allocated memory is still 142.6MB. Free memory was 48.9MB in the beginning and 46.1MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:44,621 INFO L158 Benchmark]: Boogie Preprocessor took 57.59ms. Allocated memory is still 142.6MB. Free memory was 46.1MB in the beginning and 113.8MB in the end (delta: -67.7MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2025-01-10 05:27:44,621 INFO L158 Benchmark]: RCFGBuilder took 305.43ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 99.4MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:27:44,621 INFO L158 Benchmark]: TraceAbstraction took 848.31ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 70.4MB in the end (delta: 28.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-01-10 05:27:44,621 INFO L158 Benchmark]: Witness Printer took 3.27ms. Allocated memory is still 142.6MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:44,622 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 117.4MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 755.05ms. Allocated memory is still 142.6MB. Free memory was 112.8MB in the beginning and 48.9MB in the end (delta: 63.9MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.83ms. Allocated memory is still 142.6MB. Free memory was 48.9MB in the beginning and 46.1MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.59ms. Allocated memory is still 142.6MB. Free memory was 46.1MB in the beginning and 113.8MB in the end (delta: -67.7MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * RCFGBuilder took 305.43ms. Allocated memory is still 142.6MB. Free memory was 113.8MB in the beginning and 99.4MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 848.31ms. Allocated memory is still 142.6MB. Free memory was 98.6MB in the beginning and 70.4MB in the end (delta: 28.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 3.27ms. Allocated memory is still 142.6MB. Free memory is still 70.4MB. 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: 1575]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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] [L1587] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1587] 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] [L1588] CALL CWE191_Integer_Underflow__int_fgets_sub_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] case 6: [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] case 6: [L1559] data = atoi(inputBuffer) [L1573] case 7: VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] 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: 1575]: 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, 30 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:27:44,635 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