./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_04_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_04_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 8e2b95647f9d5e8deb3607e9a0dd50e4a2044f4ead4b893a1dc106b4f32c7634 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:26:08,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:26:08,158 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-01-10 05:26:08,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:26:08,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:26:08,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:26:08,186 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:26:08,189 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:26:08,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:26:08,190 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:26:08,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:26:08,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:26:08,190 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:26:08,190 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:26:08,190 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:26:08,190 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:26:08,190 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:26:08,191 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:26:08,191 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:08,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:08,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:26:08,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:26:08,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:26:08,193 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 -> 8e2b95647f9d5e8deb3607e9a0dd50e4a2044f4ead4b893a1dc106b4f32c7634 [2025-01-10 05:26:08,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:26:08,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:26:08,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:26:08,424 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:26:08,424 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:26:08,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_04_bad.i [2025-01-10 05:26:09,619 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ab3b460f/33d502de8bdf424185a8f98042e98112/FLAGc4f3f4b4f [2025-01-10 05:26:10,009 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:26:10,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_04_bad.i [2025-01-10 05:26:10,037 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ab3b460f/33d502de8bdf424185a8f98042e98112/FLAGc4f3f4b4f [2025-01-10 05:26:10,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9ab3b460f/33d502de8bdf424185a8f98042e98112 [2025-01-10 05:26:10,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:26:10,060 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:26:10,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:10,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:26:10,065 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:26:10,066 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db01a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10, skipping insertion in model container [2025-01-10 05:26:10,067 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,105 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:26:10,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:10,669 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:26:10,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:10,813 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:26:10,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10 WrapperNode [2025-01-10 05:26:10,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:10,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:10,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:26:10,815 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:26:10,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,854 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2025-01-10 05:26:10,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:10,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:26:10,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:26:10,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:26:10,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,880 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:26:10,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,884 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:26:10,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:26:10,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:26:10,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:26:10,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (1/1) ... [2025-01-10 05:26:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:10,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:26:10,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 05:26:10,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 05:26:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:26:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:26:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:26:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:26:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:26:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 05:26:11,018 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:26:11,020 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:26:11,097 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-01-10 05:26:11,097 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:26:11,104 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:26:11,105 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:26:11,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:11 BoogieIcfgContainer [2025-01-10 05:26:11,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:26:11,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:26:11,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:26:11,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:26:11,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:26:10" (1/3) ... [2025-01-10 05:26:11,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b41f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:11, skipping insertion in model container [2025-01-10 05:26:11,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:10" (2/3) ... [2025-01-10 05:26:11,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b41f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:11, skipping insertion in model container [2025-01-10 05:26:11,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:11" (3/3) ... [2025-01-10 05:26:11,114 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_04_bad.i [2025-01-10 05:26:11,124 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:26:11,125 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_04_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:26:11,171 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:26:11,181 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;@7df95727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:26:11,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:26:11,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:26:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:26:11,189 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:26:11,190 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:26:11,190 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:26:11,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:26:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2025-01-10 05:26:11,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:26:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770500992] [2025-01-10 05:26:11,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:26:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:26:11,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:26:11,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:26:11,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:11,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 05:26:11,426 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 05:26:11,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 05:26:11,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770500992] [2025-01-10 05:26:11,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770500992] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 05:26:11,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 05:26:11,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 05:26:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785268556] [2025-01-10 05:26:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 05:26:11,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 05:26:11,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 05:26:11,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 05:26:11,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:26:11,443 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:26:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 05:26:11,465 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2025-01-10 05:26:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 05:26:11,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 11 [2025-01-10 05:26:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 05:26:11,469 INFO L225 Difference]: With dead ends: 40 [2025-01-10 05:26:11,471 INFO L226 Difference]: Without dead ends: 17 [2025-01-10 05:26:11,474 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 05:26:11,476 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 05:26:11,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 05:26:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-01-10 05:26:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-01-10 05:26:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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 05:26:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-01-10 05:26:11,496 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2025-01-10 05:26:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 05:26:11,497 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-01-10 05:26:11,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:26:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-01-10 05:26:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 05:26:11,498 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:26:11,498 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:26:11,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 05:26:11,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:26:11,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:26:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2025-01-10 05:26:11,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:26:11,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497482233] [2025-01-10 05:26:11,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:26:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:26:11,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:26:11,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:26:11,540 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:11,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:11,540 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:26:11,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:26:11,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:26:11,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:11,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:11,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 05:26:11,563 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:26:11,564 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:26:11,565 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:26:11,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 05:26:11,567 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 05:26:11,580 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:26:11,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:26:11 BoogieIcfgContainer [2025-01-10 05:26:11,582 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:26:11,583 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:26:11,583 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:26:11,583 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:26:11,584 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:11" (3/4) ... [2025-01-10 05:26:11,585 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:26:11,586 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:26:11,586 INFO L158 Benchmark]: Toolchain (without parser) took 1526.11ms. Allocated memory is still 167.8MB. Free memory was 119.5MB in the beginning and 97.9MB in the end (delta: 21.6MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2025-01-10 05:26:11,586 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:11,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 752.40ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 60.1MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-01-10 05:26:11,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.57ms. Allocated memory is still 167.8MB. Free memory was 60.1MB in the beginning and 57.9MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:26:11,587 INFO L158 Benchmark]: Boogie Preprocessor took 32.91ms. Allocated memory is still 167.8MB. Free memory was 57.9MB in the beginning and 56.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:11,587 INFO L158 Benchmark]: RCFGBuilder took 214.57ms. Allocated memory is still 167.8MB. Free memory was 56.2MB in the beginning and 43.7MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:26:11,588 INFO L158 Benchmark]: TraceAbstraction took 476.06ms. Allocated memory is still 167.8MB. Free memory was 42.8MB in the beginning and 98.0MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:11,588 INFO L158 Benchmark]: Witness Printer took 2.83ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 97.9MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:11,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 752.40ms. Allocated memory is still 167.8MB. Free memory was 119.1MB in the beginning and 60.1MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.57ms. Allocated memory is still 167.8MB. Free memory was 60.1MB in the beginning and 57.9MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.91ms. Allocated memory is still 167.8MB. Free memory was 57.9MB in the beginning and 56.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 214.57ms. Allocated memory is still 167.8MB. Free memory was 56.2MB in the beginning and 43.7MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 476.06ms. Allocated memory is still 167.8MB. Free memory was 42.8MB in the beginning and 98.0MB in the end (delta: -55.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.83ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 97.9MB 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of fgets at line 1558. 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); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_predec_04_bad() [L1552] int data; [L1553] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1568] COND TRUE \read(STATIC_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1571]: 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: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 2 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=24occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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 05:26:11,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_04_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 8e2b95647f9d5e8deb3607e9a0dd50e4a2044f4ead4b893a1dc106b4f32c7634 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:26:13,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:26:13,622 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-01-10 05:26:13,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:26:13,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:26:13,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-01-10 05:26:13,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:26:13,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:26:13,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:26:13,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:26:13,656 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:26:13,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:26:13,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:26:13,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:26:13,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:26:13,657 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:26:13,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:26:13,659 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:26:13,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:26:13,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:26:13,660 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:26:13,660 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:13,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:13,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:26:13,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:26:13,661 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 -> 8e2b95647f9d5e8deb3607e9a0dd50e4a2044f4ead4b893a1dc106b4f32c7634 [2025-01-10 05:26:13,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:26:13,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:26:13,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:26:13,941 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:26:13,943 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:26:13,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_04_bad.i [2025-01-10 05:26:15,165 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e304bf440/6f0c723b0c5740b5b8264f4f4a465937/FLAGf225e83a4 [2025-01-10 05:26:15,462 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:26:15,462 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_04_bad.i [2025-01-10 05:26:15,487 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e304bf440/6f0c723b0c5740b5b8264f4f4a465937/FLAGf225e83a4 [2025-01-10 05:26:15,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e304bf440/6f0c723b0c5740b5b8264f4f4a465937 [2025-01-10 05:26:15,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:26:15,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:26:15,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:15,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:26:15,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:26:15,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:15" (1/1) ... [2025-01-10 05:26:15,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16936fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:15, skipping insertion in model container [2025-01-10 05:26:15,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:26:15" (1/1) ... [2025-01-10 05:26:15,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:26:16,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:16,087 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:26:16,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:26:16,287 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:26:16,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16 WrapperNode [2025-01-10 05:26:16,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:26:16,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:16,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:26:16,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:26:16,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,335 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-01-10 05:26:16,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:26:16,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:26:16,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:26:16,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:26:16,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,347 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,361 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:26:16,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,375 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:26:16,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:26:16,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:26:16,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:26:16,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (1/1) ... [2025-01-10 05:26:16,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:26:16,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:26:16,409 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 05:26:16,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 05:26:16,428 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:26:16,428 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:26:16,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 05:26:16,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:26:16,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:26:16,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:26:16,553 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:26:16,554 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:26:16,664 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2025-01-10 05:26:16,665 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:26:16,671 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:26:16,671 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:26:16,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:16 BoogieIcfgContainer [2025-01-10 05:26:16,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:26:16,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:26:16,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:26:16,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:26:16,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:26:15" (1/3) ... [2025-01-10 05:26:16,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8e018d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:16, skipping insertion in model container [2025-01-10 05:26:16,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:26:16" (2/3) ... [2025-01-10 05:26:16,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8e018d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:26:16, skipping insertion in model container [2025-01-10 05:26:16,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:16" (3/3) ... [2025-01-10 05:26:16,678 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_04_bad.i [2025-01-10 05:26:16,689 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:26:16,690 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_04_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:26:16,739 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:26:16,749 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;@49766ebb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:26:16,750 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:26:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:26:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:26:16,758 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:26:16,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:26:16,758 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:26:16,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:26:16,763 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2025-01-10 05:26:16,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:26:16,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2080087356] [2025-01-10 05:26:16,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:26:16,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:26:16,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:26:16,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 05:26:16,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 05:26:16,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:26:16,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:26:16,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:16,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 05:26:16,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 05:26:16,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 05:26:16,895 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 05:26:16,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 05:26:16,896 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 05:26:16,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080087356] [2025-01-10 05:26:16,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080087356] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 05:26:16,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 05:26:16,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 05:26:16,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653220838] [2025-01-10 05:26:16,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 05:26:16,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 05:26:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 05:26:16,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 05:26:16,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:26:16,916 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:26:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 05:26:16,943 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2025-01-10 05:26:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 05:26:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 11 [2025-01-10 05:26:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 05:26:16,948 INFO L225 Difference]: With dead ends: 49 [2025-01-10 05:26:16,949 INFO L226 Difference]: Without dead ends: 15 [2025-01-10 05:26:16,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 05:26:16,954 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 05:26:16,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 05:26:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-10 05:26:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-10 05:26:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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 05:26:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2025-01-10 05:26:16,979 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2025-01-10 05:26:16,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 05:26:16,980 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2025-01-10 05:26:16,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 05:26:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2025-01-10 05:26:16,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 05:26:16,982 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:26:16,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:26:16,989 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 05:26:17,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:26:17,184 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:26:17,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:26:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2025-01-10 05:26:17,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:26:17,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076013563] [2025-01-10 05:26:17,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:26:17,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:26:17,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:26:17,187 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 05:26:17,188 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 05:26:17,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:26:17,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:26:17,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:17,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:17,276 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:26:17,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:26:17,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:26:17,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:26:17,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:26:17,323 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 05:26:17,323 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:26:17,324 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:26:17,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:26:17,333 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 05:26:17,526 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 05:26:17,529 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 05:26:17,550 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:26:17,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:26:17 BoogieIcfgContainer [2025-01-10 05:26:17,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:26:17,554 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:26:17,555 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:26:17,555 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:26:17,555 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:26:16" (3/4) ... [2025-01-10 05:26:17,558 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:26:17,558 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:26:17,559 INFO L158 Benchmark]: Toolchain (without parser) took 2052.37ms. Allocated memory is still 83.9MB. Free memory was 56.3MB in the beginning and 27.2MB in the end (delta: 29.2MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2025-01-10 05:26:17,559 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:17,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 782.70ms. Allocated memory is still 83.9MB. Free memory was 56.0MB in the beginning and 49.7MB in the end (delta: 6.4MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. [2025-01-10 05:26:17,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.19ms. Allocated memory is still 83.9MB. Free memory was 49.7MB in the beginning and 47.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:17,560 INFO L158 Benchmark]: Boogie Preprocessor took 43.29ms. Allocated memory is still 83.9MB. Free memory was 46.9MB in the beginning and 44.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:17,560 INFO L158 Benchmark]: RCFGBuilder took 291.32ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 31.4MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 05:26:17,560 INFO L158 Benchmark]: TraceAbstraction took 880.15ms. Allocated memory is still 83.9MB. Free memory was 30.7MB in the beginning and 27.2MB in the end (delta: 3.5MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. [2025-01-10 05:26:17,560 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 83.9MB. Free memory is still 27.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:26:17,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 782.70ms. Allocated memory is still 83.9MB. Free memory was 56.0MB in the beginning and 49.7MB in the end (delta: 6.4MB). Peak memory consumption was 58.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.19ms. Allocated memory is still 83.9MB. Free memory was 49.7MB in the beginning and 47.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.29ms. Allocated memory is still 83.9MB. Free memory was 46.9MB in the beginning and 44.9MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 291.32ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 31.4MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 880.15ms. Allocated memory is still 83.9MB. Free memory was 30.7MB in the beginning and 27.2MB in the end (delta: 3.5MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 83.9MB. Free memory is still 27.2MB. 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: 1571]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of fgets at line 1558. 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); [L1548] static const int STATIC_CONST_TRUE = 1; [L1549] static const int STATIC_CONST_FALSE = 0; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_predec_04_bad() [L1552] int data; [L1553] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] COND TRUE \read(STATIC_CONST_TRUE) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1568] COND TRUE \read(STATIC_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FALSE=0, STATIC_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1571]: 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 31 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 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 05:26:17,574 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