./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:02:30,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:02:30,216 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-20 21:02:30,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:02:30,219 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:02:30,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:02:30,233 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:02:30,234 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:02:30,234 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:02:30,234 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:02:30,234 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:02:30,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:02:30,235 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:02:30,235 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:02:30,235 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:02:30,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:02:30,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:02:30,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 21:02:30,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:02:30,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:02:30,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:02:30,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:02:30,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:02:30,240 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:02:30,241 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:02:30,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:02:30,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:02:30,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:02:30,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:02:30,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:02:30,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:02:30,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:02:30,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:02:30,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:02:30,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:02:30,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 21:02:30,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 21:02:30,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:02:30,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:02:30,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:02:30,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:02:30,246 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2024-11-20 21:02:30,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:02:30,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:02:30,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:02:30,507 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:02:30,508 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:02:30,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2024-11-20 21:02:31,779 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:02:32,105 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:02:32,105 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2024-11-20 21:02:32,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c315daa2/719e705b52bb4146b218063b723e3bb0/FLAG35ae987cb [2024-11-20 21:02:32,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c315daa2/719e705b52bb4146b218063b723e3bb0 [2024-11-20 21:02:32,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:02:32,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:02:32,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:02:32,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:02:32,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:02:32,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:02:32" (1/1) ... [2024-11-20 21:02:32,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7ae667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:32, skipping insertion in model container [2024-11-20 21:02:32,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:02:32" (1/1) ... [2024-11-20 21:02:32,498 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:02:33,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:02:33,180 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:02:33,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:02:33,373 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:02:33,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33 WrapperNode [2024-11-20 21:02:33,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:02:33,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:02:33,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:02:33,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:02:33,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,425 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-11-20 21:02:33,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:02:33,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:02:33,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:02:33,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:02:33,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,446 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]. [2024-11-20 21:02:33,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:02:33,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:02:33,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:02:33,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:02:33,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (1/1) ... [2024-11-20 21:02:33,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:02:33,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:02:33,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 21:02:33,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 21:02:33,534 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-20 21:02:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-20 21:02:33,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:02:33,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:02:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:02:33,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 21:02:33,650 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:02:33,651 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:02:33,760 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-20 21:02:33,761 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:02:33,770 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:02:33,770 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 21:02:33,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:02:33 BoogieIcfgContainer [2024-11-20 21:02:33,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:02:33,776 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:02:33,776 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:02:33,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:02:33,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:02:32" (1/3) ... [2024-11-20 21:02:33,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b08e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:02:33, skipping insertion in model container [2024-11-20 21:02:33,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:33" (2/3) ... [2024-11-20 21:02:33,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b08e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:02:33, skipping insertion in model container [2024-11-20 21:02:33,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:02:33" (3/3) ... [2024-11-20 21:02:33,782 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2024-11-20 21:02:33,797 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:02:33,797 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 21:02:33,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:02:33,861 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;@2d746fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:02:33,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 21:02:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 21:02:33,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-20 21:02:33,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 21:02:33,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:02:33,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 21:02:33,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:02:33,878 INFO L85 PathProgramCache]: Analyzing trace with hash 756143915, now seen corresponding path program 1 times [2024-11-20 21:02:33,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 21:02:33,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844311432] [2024-11-20 21:02:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:02:33,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 21:02:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:02:34,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 21:02:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:02:34,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 21:02:34,057 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 21:02:34,058 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-20 21:02:34,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-20 21:02:34,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 21:02:34,063 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-20 21:02:34,083 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 21:02:34,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:02:34 BoogieIcfgContainer [2024-11-20 21:02:34,085 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 21:02:34,086 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 21:02:34,086 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 21:02:34,086 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 21:02:34,086 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:02:33" (3/4) ... [2024-11-20 21:02:34,089 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 21:02:34,091 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 21:02:34,091 INFO L158 Benchmark]: Toolchain (without parser) took 1675.42ms. Allocated memory is still 157.3MB. Free memory was 119.2MB in the beginning and 62.2MB in the end (delta: 57.0MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2024-11-20 21:02:34,092 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 78.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:02:34,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 956.81ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 100.0MB in the end (delta: 19.0MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2024-11-20 21:02:34,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.41ms. Allocated memory is still 157.3MB. Free memory was 100.0MB in the beginning and 97.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 21:02:34,093 INFO L158 Benchmark]: Boogie Preprocessor took 32.49ms. Allocated memory is still 157.3MB. Free memory was 97.0MB in the beginning and 94.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 21:02:34,093 INFO L158 Benchmark]: RCFGBuilder took 310.71ms. Allocated memory is still 157.3MB. Free memory was 94.8MB in the beginning and 81.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-20 21:02:34,094 INFO L158 Benchmark]: TraceAbstraction took 309.21ms. Allocated memory is still 157.3MB. Free memory was 81.0MB in the beginning and 62.2MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-20 21:02:34,094 INFO L158 Benchmark]: Witness Printer took 4.89ms. Allocated memory is still 157.3MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:02:34,096 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 104.9MB. Free memory was 78.6MB in the beginning and 78.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 956.81ms. Allocated memory is still 157.3MB. Free memory was 119.0MB in the beginning and 100.0MB in the end (delta: 19.0MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.41ms. Allocated memory is still 157.3MB. Free memory was 100.0MB in the beginning and 97.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.49ms. Allocated memory is still 157.3MB. Free memory was 97.0MB in the beginning and 94.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 310.71ms. Allocated memory is still 157.3MB. Free memory was 94.8MB in the beginning and 81.1MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 309.21ms. Allocated memory is still 157.3MB. Free memory was 81.0MB in the beginning and 62.2MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.89ms. Allocated memory is still 157.3MB. Free memory is still 62.2MB. 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1575, overapproximation of fgets at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] 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) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_18_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-20 21:02:34,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 21:02:36,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 21:02:36,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-20 21:02:36,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 21:02:36,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 21:02:36,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-20 21:02:36,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 21:02:36,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 21:02:36,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 21:02:36,219 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 21:02:36,219 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 21:02:36,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 21:02:36,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 21:02:36,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 21:02:36,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 21:02:36,220 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 21:02:36,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 21:02:36,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 21:02:36,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 21:02:36,221 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 21:02:36,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 21:02:36,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 21:02:36,224 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 21:02:36,224 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-20 21:02:36,224 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 21:02:36,224 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 21:02:36,224 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-20 21:02:36,224 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 21:02:36,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 21:02:36,225 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 21:02:36,225 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 21:02:36,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 21:02:36,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 21:02:36,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 21:02:36,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:02:36,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 21:02:36,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 21:02:36,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 21:02:36,226 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-20 21:02:36,226 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-20 21:02:36,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 21:02:36,228 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 21:02:36,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 21:02:36,228 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 21:02:36,228 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab402ae7f6fc37ff81cd1633a6040486d6a881d5e9ad3bdd2642728ba2d2b73 [2024-11-20 21:02:36,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 21:02:36,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 21:02:36,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 21:02:36,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 21:02:36,513 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 21:02:36,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2024-11-20 21:02:37,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 21:02:38,274 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 21:02:38,275 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2024-11-20 21:02:38,300 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7044cba4/fb23ab623aca450db4d3b512083d473f/FLAGecb057547 [2024-11-20 21:02:38,315 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7044cba4/fb23ab623aca450db4d3b512083d473f [2024-11-20 21:02:38,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 21:02:38,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 21:02:38,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 21:02:38,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 21:02:38,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 21:02:38,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:02:38" (1/1) ... [2024-11-20 21:02:38,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5443b276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:38, skipping insertion in model container [2024-11-20 21:02:38,329 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:02:38" (1/1) ... [2024-11-20 21:02:38,388 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 21:02:39,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:02:39,011 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 21:02:39,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 21:02:39,225 INFO L204 MainTranslator]: Completed translation [2024-11-20 21:02:39,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39 WrapperNode [2024-11-20 21:02:39,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 21:02:39,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 21:02:39,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 21:02:39,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 21:02:39,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,293 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-11-20 21:02:39,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 21:02:39,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 21:02:39,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 21:02:39,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 21:02:39,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,329 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]. [2024-11-20 21:02:39,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,349 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 21:02:39,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 21:02:39,350 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 21:02:39,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 21:02:39,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (1/1) ... [2024-11-20 21:02:39,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 21:02:39,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 21:02:39,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 21:02:39,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 21:02:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-20 21:02:39,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-20 21:02:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-20 21:02:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 21:02:39,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 21:02:39,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 21:02:39,543 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 21:02:39,545 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 21:02:39,676 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-20 21:02:39,676 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 21:02:39,686 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 21:02:39,687 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 21:02:39,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:02:39 BoogieIcfgContainer [2024-11-20 21:02:39,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 21:02:39,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 21:02:39,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 21:02:39,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 21:02:39,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:02:38" (1/3) ... [2024-11-20 21:02:39,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3003f1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:02:39, skipping insertion in model container [2024-11-20 21:02:39,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:02:39" (2/3) ... [2024-11-20 21:02:39,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3003f1bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:02:39, skipping insertion in model container [2024-11-20 21:02:39,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:02:39" (3/3) ... [2024-11-20 21:02:39,697 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_18_bad.i [2024-11-20 21:02:39,712 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 21:02:39,712 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 21:02:39,769 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 21:02:39,777 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;@18ac2a9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 21:02:39,778 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 21:02:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 21:02:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-20 21:02:39,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 21:02:39,791 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 21:02:39,791 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-20 21:02:39,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 21:02:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash 756143915, now seen corresponding path program 1 times [2024-11-20 21:02:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-20 21:02:39,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820615652] [2024-11-20 21:02:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 21:02:39,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 21:02:39,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-20 21:02:39,813 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-20 21:02:39,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-20 21:02:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:02:39,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 21:02:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 21:02:39,988 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-20 21:02:39,990 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 21:02:39,991 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-20 21:02:39,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-20 21:02:39,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-20 21:02:40,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-20 21:02:40,201 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-20 21:02:40,225 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 21:02:40,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:02:40 BoogieIcfgContainer [2024-11-20 21:02:40,229 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 21:02:40,230 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 21:02:40,230 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 21:02:40,230 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 21:02:40,231 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:02:39" (3/4) ... [2024-11-20 21:02:40,233 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 21:02:40,234 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 21:02:40,235 INFO L158 Benchmark]: Toolchain (without parser) took 1915.32ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 46.5MB in the beginning and 53.5MB in the end (delta: -7.0MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2024-11-20 21:02:40,235 INFO L158 Benchmark]: CDTParser took 0.83ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:02:40,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 905.43ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 46.3MB in the beginning and 40.1MB in the end (delta: 6.2MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2024-11-20 21:02:40,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.63ms. Allocated memory is still 90.2MB. Free memory was 39.7MB in the beginning and 62.7MB in the end (delta: -23.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-11-20 21:02:40,237 INFO L158 Benchmark]: Boogie Preprocessor took 55.16ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 60.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 21:02:40,238 INFO L158 Benchmark]: RCFGBuilder took 338.68ms. Allocated memory is still 90.2MB. Free memory was 60.1MB in the beginning and 45.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-20 21:02:40,238 INFO L158 Benchmark]: TraceAbstraction took 537.62ms. Allocated memory is still 90.2MB. Free memory was 44.9MB in the beginning and 53.9MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:02:40,239 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 90.2MB. Free memory was 53.9MB in the beginning and 53.5MB in the end (delta: 396.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 21:02:40,241 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83ms. Allocated memory is still 69.2MB. Free memory was 45.7MB in the beginning and 45.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 905.43ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 46.3MB in the beginning and 40.1MB in the end (delta: 6.2MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.63ms. Allocated memory is still 90.2MB. Free memory was 39.7MB in the beginning and 62.7MB in the end (delta: -23.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.16ms. Allocated memory is still 90.2MB. Free memory was 62.7MB in the beginning and 60.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.68ms. Allocated memory is still 90.2MB. Free memory was 60.1MB in the beginning and 45.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 537.62ms. Allocated memory is still 90.2MB. Free memory was 44.9MB in the beginning and 53.9MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 90.2MB. Free memory was 53.9MB in the beginning and 53.5MB in the end (delta: 396.0kB). 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1575, overapproximation of fgets at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] 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) [L1575] 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] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_18_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1568] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-20 21:02:40,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample