./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 14:08:33,606 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 14:08:33,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-03-04 14:08:33,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 14:08:33,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 14:08:33,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 14:08:33,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 14:08:33,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 14:08:33,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 14:08:33,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 14:08:33,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 14:08:33,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 14:08:33,686 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:08:33,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 14:08:33,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 14:08:33,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 14:08:33,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 14:08:33,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 14:08:33,687 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/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 -> 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a [2025-03-04 14:08:33,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 14:08:33,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 14:08:33,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 14:08:33,931 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 14:08:33,931 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 14:08:33,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2025-03-04 14:08:35,020 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a96c23911/f6ebe9244ce24ddc8ba1185dc69ab927/FLAG92ebbe0ee [2025-03-04 14:08:35,399 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 14:08:35,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2025-03-04 14:08:35,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a96c23911/f6ebe9244ce24ddc8ba1185dc69ab927/FLAG92ebbe0ee [2025-03-04 14:08:35,605 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a96c23911/f6ebe9244ce24ddc8ba1185dc69ab927 [2025-03-04 14:08:35,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 14:08:35,608 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 14:08:35,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 14:08:35,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 14:08:35,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 14:08:35,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:08:35" (1/1) ... [2025-03-04 14:08:35,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a3954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:35, skipping insertion in model container [2025-03-04 14:08:35,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:08:35" (1/1) ... [2025-03-04 14:08:35,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 14:08:36,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:08:36,112 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 14:08:36,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:08:36,261 INFO L204 MainTranslator]: Completed translation [2025-03-04 14:08:36,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36 WrapperNode [2025-03-04 14:08:36,262 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 14:08:36,263 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 14:08:36,263 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 14:08:36,263 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 14:08:36,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,290 INFO L138 Inliner]: procedures = 500, calls = 29, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 62 [2025-03-04 14:08:36,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 14:08:36,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 14:08:36,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 14:08:36,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 14:08:36,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,320 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]. [2025-03-04 14:08:36,321 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,327 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 14:08:36,333 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 14:08:36,333 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 14:08:36,333 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 14:08:36,334 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (1/1) ... [2025-03-04 14:08:36,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:08:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 14:08:36,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 14:08:36,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 14:08:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-04 14:08:36,389 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-04 14:08:36,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 14:08:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 14:08:36,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 14:08:36,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 14:08:36,491 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 14:08:36,493 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 14:08:36,586 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-03-04 14:08:36,587 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 14:08:36,593 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 14:08:36,593 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 14:08:36,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:08:36 BoogieIcfgContainer [2025-03-04 14:08:36,593 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 14:08:36,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 14:08:36,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 14:08:36,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 14:08:36,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:08:35" (1/3) ... [2025-03-04 14:08:36,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73aeb296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:08:36, skipping insertion in model container [2025-03-04 14:08:36,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:36" (2/3) ... [2025-03-04 14:08:36,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73aeb296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:08:36, skipping insertion in model container [2025-03-04 14:08:36,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:08:36" (3/3) ... [2025-03-04 14:08:36,600 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2025-03-04 14:08:36,613 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 14:08:36,614 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_52_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 14:08:36,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 14:08:36,653 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;@485b5cca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 14:08:36,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 14:08:36,655 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) [2025-03-04 14:08:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 14:08:36,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 14:08:36,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 14:08:36,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 14:08:36,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 14:08:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash 148831858, now seen corresponding path program 1 times [2025-03-04 14:08:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 14:08:36,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166090057] [2025-03-04 14:08:36,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 14:08:36,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 14:08:36,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 14:08:36,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 14:08:36,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:08:36,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:08:36,778 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 14:08:36,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 14:08:36,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 14:08:36,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:08:36,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:08:36,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 14:08:36,828 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 14:08:36,830 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-04 14:08:36,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-04 14:08:36,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 14:08:36,836 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 14:08:36,854 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 14:08:36,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 02:08:36 BoogieIcfgContainer [2025-03-04 14:08:36,858 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 14:08:36,859 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 14:08:36,859 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 14:08:36,860 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 14:08:36,860 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:08:36" (3/4) ... [2025-03-04 14:08:36,862 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 14:08:36,863 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 14:08:36,864 INFO L158 Benchmark]: Toolchain (without parser) took 1255.32ms. Allocated memory is still 167.8MB. Free memory was 128.3MB in the beginning and 117.8MB in the end (delta: 10.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2025-03-04 14:08:36,864 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 201.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:36,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 652.95ms. Allocated memory is still 167.8MB. Free memory was 128.3MB in the beginning and 67.6MB in the end (delta: 60.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-03-04 14:08:36,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.30ms. Allocated memory is still 167.8MB. Free memory was 67.6MB in the beginning and 64.9MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:36,866 INFO L158 Benchmark]: Boogie Preprocessor took 38.82ms. Allocated memory is still 167.8MB. Free memory was 64.9MB in the beginning and 63.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:36,866 INFO L158 Benchmark]: IcfgBuilder took 260.28ms. Allocated memory is still 167.8MB. Free memory was 63.5MB in the beginning and 50.8MB in the end (delta: 12.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 14:08:36,866 INFO L158 Benchmark]: TraceAbstraction took 262.95ms. Allocated memory is still 167.8MB. Free memory was 50.3MB in the beginning and 117.9MB in the end (delta: -67.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:36,866 INFO L158 Benchmark]: Witness Printer took 3.55ms. Allocated memory is still 167.8MB. Free memory was 117.9MB in the beginning and 117.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:36,868 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 201.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 652.95ms. Allocated memory is still 167.8MB. Free memory was 128.3MB in the beginning and 67.6MB in the end (delta: 60.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.30ms. Allocated memory is still 167.8MB. Free memory was 67.6MB in the beginning and 64.9MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.82ms. Allocated memory is still 167.8MB. Free memory was 64.9MB in the beginning and 63.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 260.28ms. Allocated memory is still 167.8MB. Free memory was 63.5MB in the beginning and 50.8MB in the end (delta: 12.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 262.95ms. Allocated memory is still 167.8MB. Free memory was 50.3MB in the beginning and 117.9MB in the end (delta: -67.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.55ms. Allocated memory is still 167.8MB. Free memory was 117.9MB in the beginning and 117.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_52_bad() [L1551] int data; [L1552] data = 0 [L1554] 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] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_52c_badSink(data) [L1582] 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: 1582]: 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 [2025-03-04 14:08:36,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 14:08:38,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 14:08:38,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-03-04 14:08:38,959 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 14:08:38,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 14:08:38,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-03-04 14:08:38,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 14:08:38,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 14:08:38,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 14:08:38,975 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 14:08:38,975 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 14:08:38,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 14:08:38,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 14:08:38,975 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 14:08:38,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 14:08:38,976 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 14:08:38,976 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 14:08:38,977 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 14:08:38,977 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:08:38,978 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 14:08:38,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 14:08:38,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 14:08:38,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 14:08:38,979 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/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 -> 8b8f30f42ac2262e4c0238074a397f3a849c6fa8d29c1aeac0beaccd636a109a [2025-03-04 14:08:39,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 14:08:39,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 14:08:39,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 14:08:39,266 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 14:08:39,266 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 14:08:39,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2025-03-04 14:08:40,484 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb14c4227/c9c4cbf0b99b4b8c905718b0c5b992f2/FLAG1bb42c56c [2025-03-04 14:08:40,787 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 14:08:40,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2025-03-04 14:08:40,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb14c4227/c9c4cbf0b99b4b8c905718b0c5b992f2/FLAG1bb42c56c [2025-03-04 14:08:40,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb14c4227/c9c4cbf0b99b4b8c905718b0c5b992f2 [2025-03-04 14:08:40,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 14:08:40,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 14:08:40,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 14:08:40,840 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 14:08:40,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 14:08:40,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:08:40" (1/1) ... [2025-03-04 14:08:40,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cab4cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:40, skipping insertion in model container [2025-03-04 14:08:40,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:08:40" (1/1) ... [2025-03-04 14:08:40,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 14:08:41,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:08:41,402 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 14:08:41,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:08:41,560 INFO L204 MainTranslator]: Completed translation [2025-03-04 14:08:41,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41 WrapperNode [2025-03-04 14:08:41,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 14:08:41,561 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 14:08:41,561 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 14:08:41,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 14:08:41,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,616 INFO L138 Inliner]: procedures = 505, calls = 29, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 61 [2025-03-04 14:08:41,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 14:08:41,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 14:08:41,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 14:08:41,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 14:08:41,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,635 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]. [2025-03-04 14:08:41,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,639 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 14:08:41,644 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 14:08:41,644 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 14:08:41,644 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 14:08:41,645 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (1/1) ... [2025-03-04 14:08:41,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:08:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 14:08:41,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 14:08:41,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 14:08:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-04 14:08:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-04 14:08:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 14:08:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 14:08:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 14:08:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 14:08:41,795 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 14:08:41,798 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 14:08:41,887 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2025-03-04 14:08:41,887 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 14:08:41,892 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 14:08:41,893 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 14:08:41,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:08:41 BoogieIcfgContainer [2025-03-04 14:08:41,893 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 14:08:41,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 14:08:41,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 14:08:41,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 14:08:41,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:08:40" (1/3) ... [2025-03-04 14:08:41,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529d1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:08:41, skipping insertion in model container [2025-03-04 14:08:41,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:08:41" (2/3) ... [2025-03-04 14:08:41,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7529d1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:08:41, skipping insertion in model container [2025-03-04 14:08:41,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:08:41" (3/3) ... [2025-03-04 14:08:41,901 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_52_bad.i [2025-03-04 14:08:41,910 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 14:08:41,911 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_52_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 14:08:41,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 14:08:41,959 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;@79d6e95e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 14:08:41,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 14:08:41,963 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) [2025-03-04 14:08:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-04 14:08:41,967 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 14:08:41,967 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 14:08:41,967 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 14:08:41,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 14:08:41,971 INFO L85 PathProgramCache]: Analyzing trace with hash 148831858, now seen corresponding path program 1 times [2025-03-04 14:08:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 14:08:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684320908] [2025-03-04 14:08:41,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 14:08:41,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 14:08:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 14:08:42,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 14:08:42,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 14:08:42,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 14:08:42,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 14:08:42,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:08:42,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:08:42,128 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 14:08:42,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 14:08:42,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 14:08:42,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:08:42,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:08:42,162 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-04 14:08:42,165 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 14:08:42,166 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-04 14:08:42,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-04 14:08:42,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 14:08:42,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 14:08:42,375 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 14:08:42,392 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 14:08:42,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 02:08:42 BoogieIcfgContainer [2025-03-04 14:08:42,397 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 14:08:42,397 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 14:08:42,397 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 14:08:42,397 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 14:08:42,398 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:08:41" (3/4) ... [2025-03-04 14:08:42,400 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 14:08:42,400 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 14:08:42,401 INFO L158 Benchmark]: Toolchain (without parser) took 1563.35ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 87.9MB in the beginning and 196.7MB in the end (delta: -108.8MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2025-03-04 14:08:42,404 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:42,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.40ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 64.6MB in the end (delta: 23.1MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2025-03-04 14:08:42,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.51ms. Allocated memory is still 117.4MB. Free memory was 64.6MB in the beginning and 62.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:42,405 INFO L158 Benchmark]: Boogie Preprocessor took 26.43ms. Allocated memory is still 117.4MB. Free memory was 62.1MB in the beginning and 59.5MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 14:08:42,405 INFO L158 Benchmark]: IcfgBuilder took 249.06ms. Allocated memory is still 117.4MB. Free memory was 59.5MB in the beginning and 46.2MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 14:08:42,405 INFO L158 Benchmark]: TraceAbstraction took 502.07ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 45.2MB in the beginning and 196.8MB in the end (delta: -151.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:42,406 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 234.9MB. Free memory was 196.8MB in the beginning and 196.7MB in the end (delta: 35.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:08:42,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 117.4MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 721.40ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 64.6MB in the end (delta: 23.1MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.51ms. Allocated memory is still 117.4MB. Free memory was 64.6MB in the beginning and 62.1MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.43ms. Allocated memory is still 117.4MB. Free memory was 62.1MB in the beginning and 59.5MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 249.06ms. Allocated memory is still 117.4MB. Free memory was 59.5MB in the beginning and 46.2MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 502.07ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 45.2MB in the beginning and 196.8MB in the end (delta: -151.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 234.9MB. Free memory was 196.8MB in the beginning and 196.7MB in the end (delta: 35.5kB). 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_52_bad() [L1551] int data; [L1552] data = 0 [L1554] 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] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_52b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_52c_badSink(data) [L1582] 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: 1582]: 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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 [2025-03-04 14:08:42,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample