./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d 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/CWE190_Integer_Overflow__int_fgets_square_34_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 e97a33f771d8c05564094634b8fa007d2ead6f7bf8c54a8f950a795e59c44cd4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 11:16:05,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 11:16:05,984 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-02-08 11:16:05,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 11:16:05,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 11:16:06,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 11:16:06,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 11:16:06,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 11:16:06,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 11:16:06,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 11:16:06,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 11:16:06,007 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 11:16:06,007 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 11:16:06,008 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 11:16:06,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 11:16:06,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 11:16:06,008 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 -> e97a33f771d8c05564094634b8fa007d2ead6f7bf8c54a8f950a795e59c44cd4 [2025-02-08 11:16:06,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 11:16:06,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 11:16:06,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 11:16:06,224 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 11:16:06,224 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 11:16:06,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_34_bad.i [2025-02-08 11:16:07,297 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/559cb608a/cdc77b8027e54a3ca7da51bab0f1e7df/FLAGa5eb5e8f1 [2025-02-08 11:16:07,703 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 11:16:07,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_34_bad.i [2025-02-08 11:16:07,727 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/559cb608a/cdc77b8027e54a3ca7da51bab0f1e7df/FLAGa5eb5e8f1 [2025-02-08 11:16:07,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/559cb608a/cdc77b8027e54a3ca7da51bab0f1e7df [2025-02-08 11:16:07,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 11:16:07,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 11:16:07,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 11:16:07,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 11:16:07,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 11:16:07,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 11:16:07" (1/1) ... [2025-02-08 11:16:07,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e72001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:07, skipping insertion in model container [2025-02-08 11:16:07,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 11:16:07" (1/1) ... [2025-02-08 11:16:07,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 11:16:08,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 11:16:08,633 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 11:16:08,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 11:16:08,852 INFO L204 MainTranslator]: Completed translation [2025-02-08 11:16:08,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08 WrapperNode [2025-02-08 11:16:08,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 11:16:08,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 11:16:08,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 11:16:08,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 11:16:08,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,887 INFO L138 Inliner]: procedures = 936, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2025-02-08 11:16:08,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 11:16:08,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 11:16:08,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 11:16:08,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 11:16:08,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,903 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 11:16:08,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,910 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 11:16:08,916 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 11:16:08,916 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 11:16:08,916 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 11:16:08,917 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (1/1) ... [2025-02-08 11:16:08,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 11:16:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 11:16:08,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 11:16:08,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 11:16:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 11:16:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 11:16:08,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 11:16:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 11:16:08,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 11:16:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 11:16:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 11:16:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 11:16:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-08 11:16:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-08 11:16:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 11:16:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 11:16:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 11:16:09,040 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 11:16:09,042 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 11:16:09,134 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-02-08 11:16:09,134 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 11:16:09,141 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 11:16:09,141 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 11:16:09,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 11:16:09 BoogieIcfgContainer [2025-02-08 11:16:09,142 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 11:16:09,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 11:16:09,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 11:16:09,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 11:16:09,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 11:16:07" (1/3) ... [2025-02-08 11:16:09,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191e12dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 11:16:09, skipping insertion in model container [2025-02-08 11:16:09,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:08" (2/3) ... [2025-02-08 11:16:09,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191e12dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 11:16:09, skipping insertion in model container [2025-02-08 11:16:09,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 11:16:09" (3/3) ... [2025-02-08 11:16:09,150 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_34_bad.i [2025-02-08 11:16:09,160 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 11:16:09,161 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE190_Integer_Overflow__int_fgets_square_34_bad.i that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 11:16:09,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 11:16:09,207 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;@71bf30b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 11:16:09,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 11:16:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 11:16:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 11:16:09,215 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 11:16:09,215 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 11:16:09,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 11:16:09,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 11:16:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1837684405, now seen corresponding path program 1 times [2025-02-08 11:16:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 11:16:09,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187453991] [2025-02-08 11:16:09,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 11:16:09,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 11:16:09,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 11:16:09,352 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 11:16:09,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 11:16:09,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 11:16:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 11:16:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 11:16:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187453991] [2025-02-08 11:16:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187453991] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 11:16:09,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 11:16:09,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 11:16:09,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912838781] [2025-02-08 11:16:09,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 11:16:09,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 11:16:09,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 11:16:09,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 11:16:09,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 11:16:09,439 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 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 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2025-02-08 11:16:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 11:16:09,447 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2025-02-08 11:16:09,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 11:16:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10 [2025-02-08 11:16:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 11:16:09,452 INFO L225 Difference]: With dead ends: 18 [2025-02-08 11:16:09,452 INFO L226 Difference]: Without dead ends: 13 [2025-02-08 11:16:09,454 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 11:16:09,455 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 11:16:09,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 11:16:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-02-08 11:16:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-02-08 11:16:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2025-02-08 11:16:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2025-02-08 11:16:09,480 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2025-02-08 11:16:09,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 11:16:09,481 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2025-02-08 11:16:09,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 8.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2025-02-08 11:16:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2025-02-08 11:16:09,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 11:16:09,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 11:16:09,481 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 11:16:09,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 11:16:09,482 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 11:16:09,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 11:16:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1133641683, now seen corresponding path program 1 times [2025-02-08 11:16:09,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 11:16:09,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745617052] [2025-02-08 11:16:09,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 11:16:09,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 11:16:09,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 11:16:09,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 11:16:09,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 11:16:09,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 11:16:09,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376696614] [2025-02-08 11:16:09,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 11:16:09,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 11:16:09,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 11:16:09,539 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 11:16:09,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 11:16:09,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 11:16:09,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 11:16:09,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 11:16:09,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 11:16:09,656 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 11:16:09,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 11:16:09,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 11:16:09,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 11:16:09,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 11:16:09,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 11:16:09,687 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 11:16:09,688 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-08 11:16:09,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-08 11:16:09,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 11:16:09,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 11:16:09,892 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 11:16:09,907 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 11:16:09,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 11:16:09 BoogieIcfgContainer [2025-02-08 11:16:09,912 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 11:16:09,912 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 11:16:09,912 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 11:16:09,912 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 11:16:09,913 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 11:16:09" (3/4) ... [2025-02-08 11:16:09,914 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 11:16:09,918 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 11:16:09,919 INFO L158 Benchmark]: Toolchain (without parser) took 2043.09ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 103.7MB in the end (delta: 24.8MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2025-02-08 11:16:09,919 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 226.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:09,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 976.05ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 78.6MB in the end (delta: 49.9MB). Peak memory consumption was 94.6MB. Max. memory is 16.1GB. [2025-02-08 11:16:09,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.12ms. Allocated memory is still 167.8MB. Free memory was 78.6MB in the beginning and 75.4MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 11:16:09,919 INFO L158 Benchmark]: Boogie Preprocessor took 26.54ms. Allocated memory is still 167.8MB. Free memory was 75.4MB in the beginning and 73.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:09,920 INFO L158 Benchmark]: IcfgBuilder took 225.79ms. Allocated memory is still 167.8MB. Free memory was 73.7MB in the beginning and 59.5MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 11:16:09,920 INFO L158 Benchmark]: TraceAbstraction took 768.76ms. Allocated memory is still 167.8MB. Free memory was 59.5MB in the beginning and 103.8MB in the end (delta: -44.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:09,920 INFO L158 Benchmark]: Witness Printer took 6.16ms. Allocated memory is still 167.8MB. Free memory was 103.8MB in the beginning and 103.7MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:09,921 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 226.5MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 976.05ms. Allocated memory is still 167.8MB. Free memory was 128.6MB in the beginning and 78.6MB in the end (delta: 49.9MB). Peak memory consumption was 94.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.12ms. Allocated memory is still 167.8MB. Free memory was 78.6MB in the beginning and 75.4MB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.54ms. Allocated memory is still 167.8MB. Free memory was 75.4MB in the beginning and 73.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 225.79ms. Allocated memory is still 167.8MB. Free memory was 73.7MB in the beginning and 59.5MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 768.76ms. Allocated memory is still 167.8MB. Free memory was 59.5MB in the beginning and 103.8MB in the end (delta: -44.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.16ms. Allocated memory is still 167.8MB. Free memory was 103.8MB in the beginning and 103.7MB in the end (delta: 30.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1857]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1846, overapproximation of fgets at line 1844. 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); [L1865] 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) [L1865] 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] [L1866] CALL CWE190_Integer_Overflow__int_fgets_square_34_bad() [L1839] int data; [L1840] CWE190_Integer_Overflow__int_fgets_square_34_unionType myUnion; [L1841] data = 0 [L1843] 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, myUnion={5:0}] [L1844] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1846] data = atoi(inputBuffer) [L1853] myUnion.unionFirst = data [L1855] EXPR myUnion.unionSecond [L1855] int data = myUnion.unionSecond; [L1857] data * data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1857]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 20 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 [2025-02-08 11:16:09,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_34_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 e97a33f771d8c05564094634b8fa007d2ead6f7bf8c54a8f950a795e59c44cd4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 11:16:11,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 11:16:11,794 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-02-08 11:16:11,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 11:16:11,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 11:16:11,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-02-08 11:16:11,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 11:16:11,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 11:16:11,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 11:16:11,823 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 11:16:11,823 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 11:16:11,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 11:16:11,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 11:16:11,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 11:16:11,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 11:16:11,824 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 11:16:11,825 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 11:16:11,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 11:16:11,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 11:16:11,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 11:16:11,826 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 -> e97a33f771d8c05564094634b8fa007d2ead6f7bf8c54a8f950a795e59c44cd4 [2025-02-08 11:16:12,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 11:16:12,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 11:16:12,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 11:16:12,071 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 11:16:12,072 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 11:16:12,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_34_bad.i [2025-02-08 11:16:13,187 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/78e080fb0/2d8998d19941463eb253bbea099f1761/FLAGde52a83ca [2025-02-08 11:16:13,514 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 11:16:13,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_34_bad.i [2025-02-08 11:16:13,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/78e080fb0/2d8998d19941463eb253bbea099f1761/FLAGde52a83ca [2025-02-08 11:16:13,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/78e080fb0/2d8998d19941463eb253bbea099f1761 [2025-02-08 11:16:13,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 11:16:13,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 11:16:13,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 11:16:13,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 11:16:13,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 11:16:13,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 11:16:13" (1/1) ... [2025-02-08 11:16:13,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797cb210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:13, skipping insertion in model container [2025-02-08 11:16:13,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 11:16:13" (1/1) ... [2025-02-08 11:16:13,608 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 11:16:14,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 11:16:14,347 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 11:16:14,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 11:16:14,613 INFO L204 MainTranslator]: Completed translation [2025-02-08 11:16:14,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14 WrapperNode [2025-02-08 11:16:14,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 11:16:14,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 11:16:14,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 11:16:14,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 11:16:14,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,651 INFO L138 Inliner]: procedures = 941, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2025-02-08 11:16:14,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 11:16:14,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 11:16:14,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 11:16:14,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 11:16:14,657 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,676 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 11:16:14,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,681 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 11:16:14,686 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 11:16:14,686 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 11:16:14,686 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 11:16:14,687 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (1/1) ... [2025-02-08 11:16:14,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 11:16:14,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 11:16:14,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 11:16:14,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 11:16:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-08 11:16:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-02-08 11:16:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-02-08 11:16:14,858 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 11:16:14,859 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 11:16:16,489 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-02-08 11:16:16,489 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 11:16:16,497 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 11:16:16,497 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 11:16:16,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 11:16:16 BoogieIcfgContainer [2025-02-08 11:16:16,497 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 11:16:16,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 11:16:16,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 11:16:16,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 11:16:16,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 11:16:13" (1/3) ... [2025-02-08 11:16:16,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e5b52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 11:16:16, skipping insertion in model container [2025-02-08 11:16:16,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 11:16:14" (2/3) ... [2025-02-08 11:16:16,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e5b52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 11:16:16, skipping insertion in model container [2025-02-08 11:16:16,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 11:16:16" (3/3) ... [2025-02-08 11:16:16,507 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_34_bad.i [2025-02-08 11:16:16,516 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 11:16:16,517 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE190_Integer_Overflow__int_fgets_square_34_bad.i that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 11:16:16,550 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 11:16:16,556 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;@39f46ba7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 11:16:16,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 11:16:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 11:16:16,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 11:16:16,562 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 11:16:16,562 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 11:16:16,563 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 11:16:16,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 11:16:16,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1837684405, now seen corresponding path program 1 times [2025-02-08 11:16:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 11:16:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540864317] [2025-02-08 11:16:16,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 11:16:16,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 11:16:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 11:16:16,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 11:16:16,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 11:16:16,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 11:16:18,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 11:16:18,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 11:16:18,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 11:16:18,976 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 11:16:18,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 11:16:19,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 11:16:19,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 11:16:19,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 11:16:19,116 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 11:16:19,117 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 11:16:19,118 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-08 11:16:19,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-08 11:16:19,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 11:16:19,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 11:16:19,322 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-08 11:16:19,334 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 11:16:19,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 11:16:19 BoogieIcfgContainer [2025-02-08 11:16:19,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 11:16:19,336 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 11:16:19,336 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 11:16:19,336 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 11:16:19,336 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 11:16:16" (3/4) ... [2025-02-08 11:16:19,338 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 11:16:19,338 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 11:16:19,339 INFO L158 Benchmark]: Toolchain (without parser) took 5782.28ms. Allocated memory is still 117.4MB. Free memory was 87.7MB in the beginning and 69.2MB in the end (delta: 18.5MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2025-02-08 11:16:19,339 INFO L158 Benchmark]: CDTParser took 1.48ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:19,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1055.47ms. Allocated memory is still 117.4MB. Free memory was 87.5MB in the beginning and 63.1MB in the end (delta: 24.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2025-02-08 11:16:19,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.28ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 59.0MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 11:16:19,340 INFO L158 Benchmark]: Boogie Preprocessor took 33.36ms. Allocated memory is still 117.4MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:19,340 INFO L158 Benchmark]: IcfgBuilder took 1811.39ms. Allocated memory is still 117.4MB. Free memory was 56.9MB in the beginning and 42.3MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 11:16:19,340 INFO L158 Benchmark]: TraceAbstraction took 2836.89ms. Allocated memory is still 117.4MB. Free memory was 41.5MB in the beginning and 70.1MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:19,340 INFO L158 Benchmark]: Witness Printer took 2.52ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 69.2MB in the end (delta: 899.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 11:16:19,342 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.48ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1055.47ms. Allocated memory is still 117.4MB. Free memory was 87.5MB in the beginning and 63.1MB in the end (delta: 24.3MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.28ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 59.0MB in the end (delta: 4.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.36ms. Allocated memory is still 117.4MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 1811.39ms. Allocated memory is still 117.4MB. Free memory was 56.9MB in the beginning and 42.3MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2836.89ms. Allocated memory is still 117.4MB. Free memory was 41.5MB in the beginning and 70.1MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.52ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 69.2MB in the end (delta: 899.1kB). 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: 1857]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1846, overapproximation of fgets at line 1844. 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); [L1865] 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) [L1865] 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] [L1866] CALL CWE190_Integer_Overflow__int_fgets_square_34_bad() [L1839] int data; [L1840] CWE190_Integer_Overflow__int_fgets_square_34_unionType myUnion; [L1841] data = 0 [L1843] 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, myUnion={1073741826:0}] [L1844] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1846] data = atoi(inputBuffer) [L1853] myUnion.unionFirst = data [L1855] EXPR myUnion.unionSecond [L1855] int data = myUnion.unionSecond; [L1857] data * data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1857]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, 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=18occurred 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, 2.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 11:16:19,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample