./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_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/CWE191_Integer_Underflow__int_fgets_postdec_06_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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 12:49:58,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 12:49:58,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-02-08 12:49:58,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 12:49:58,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 12:49:58,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 12:49:58,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 12:49:58,324 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 12:49:58,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 12:49:58,325 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 12:49:58,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 12:49:58,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 12:49:58,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 12:49:58,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 12:49:58,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 12:49:58,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 12:49:58,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 12:49:58,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 12:49:58,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 12:49:58,328 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 -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2025-02-08 12:49:58,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 12:49:58,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 12:49:58,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 12:49:58,552 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 12:49:58,552 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 12:49:58,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2025-02-08 12:49:59,748 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3288a0176/75b73531321f42198d3874e6eff01da8/FLAG7485fc429 [2025-02-08 12:50:00,117 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 12:50:00,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2025-02-08 12:50:00,141 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3288a0176/75b73531321f42198d3874e6eff01da8/FLAG7485fc429 [2025-02-08 12:50:00,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3288a0176/75b73531321f42198d3874e6eff01da8 [2025-02-08 12:50:00,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 12:50:00,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 12:50:00,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 12:50:00,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 12:50:00,337 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 12:50:00,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:50:00" (1/1) ... [2025-02-08 12:50:00,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@288d7102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:00, skipping insertion in model container [2025-02-08 12:50:00,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:50:00" (1/1) ... [2025-02-08 12:50:00,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 12:50:01,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 12:50:01,034 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 12:50:01,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 12:50:01,189 INFO L204 MainTranslator]: Completed translation [2025-02-08 12:50:01,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01 WrapperNode [2025-02-08 12:50:01,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 12:50:01,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 12:50:01,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 12:50:01,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 12:50:01,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,245 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-02-08 12:50:01,245 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 12:50:01,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 12:50:01,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 12:50:01,247 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 12:50:01,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,256 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,273 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-02-08 12:50:01,273 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,273 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,276 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 12:50:01,280 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 12:50:01,280 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 12:50:01,280 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 12:50:01,281 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (1/1) ... [2025-02-08 12:50:01,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 12:50:01,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 12:50:01,302 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 12:50:01,305 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 12:50:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-08 12:50:01,319 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-08 12:50:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 12:50:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 12:50:01,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 12:50:01,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 12:50:01,421 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 12:50:01,422 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 12:50:01,508 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-02-08 12:50:01,508 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 12:50:01,514 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 12:50:01,514 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 12:50:01,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:50:01 BoogieIcfgContainer [2025-02-08 12:50:01,514 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 12:50:01,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 12:50:01,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 12:50:01,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 12:50:01,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 12:50:00" (1/3) ... [2025-02-08 12:50:01,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32efd941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:50:01, skipping insertion in model container [2025-02-08 12:50:01,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:01" (2/3) ... [2025-02-08 12:50:01,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32efd941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:50:01, skipping insertion in model container [2025-02-08 12:50:01,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:50:01" (3/3) ... [2025-02-08 12:50:01,521 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2025-02-08 12:50:01,530 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 12:50:01,531 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i that has 2 procedures, 21 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 12:50:01,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 12:50:01,569 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;@15612762, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 12:50:01,569 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 12:50:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 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 12:50:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 12:50:01,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 12:50:01,576 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 12:50:01,576 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 12:50:01,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 12:50:01,580 INFO L85 PathProgramCache]: Analyzing trace with hash 412552476, now seen corresponding path program 1 times [2025-02-08 12:50:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 12:50:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151938723] [2025-02-08 12:50:01,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 12:50:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 12:50:01,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 12:50:01,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 12:50:01,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 12:50:01,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 12:50:01,718 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 12:50:01,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 12:50:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151938723] [2025-02-08 12:50:01,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151938723] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 12:50:01,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 12:50:01,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 12:50:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551647420] [2025-02-08 12:50:01,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 12:50:01,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 12:50:01,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 12:50:01,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 12:50:01,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 12:50:01,754 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 12:50:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 12:50:01,798 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2025-02-08 12:50:01,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 12:50:01,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 12:50:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 12:50:01,803 INFO L225 Difference]: With dead ends: 35 [2025-02-08 12:50:01,803 INFO L226 Difference]: Without dead ends: 16 [2025-02-08 12:50:01,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 12:50:01,807 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 12:50:01,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 12:50:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-08 12:50:01,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-08 12:50:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 12:50:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-02-08 12:50:01,828 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2025-02-08 12:50:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 12:50:01,829 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-02-08 12:50:01,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 12:50:01,829 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-02-08 12:50:01,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 12:50:01,829 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 12:50:01,829 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 12:50:01,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 12:50:01,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 12:50:01,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 12:50:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1325107290, now seen corresponding path program 1 times [2025-02-08 12:50:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 12:50:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473897841] [2025-02-08 12:50:01,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 12:50:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 12:50:01,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 12:50:01,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 12:50:01,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 12:50:01,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 12:50:01,858 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 12:50:01,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 12:50:01,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 12:50:01,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 12:50:01,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 12:50:01,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 12:50:01,882 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 12:50:01,885 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-08 12:50:01,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-08 12:50:01,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 12:50:01,888 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 12:50:01,899 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 12:50:01,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 12:50:01 BoogieIcfgContainer [2025-02-08 12:50:01,901 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 12:50:01,902 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 12:50:01,902 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 12:50:01,902 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 12:50:01,903 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:50:01" (3/4) ... [2025-02-08 12:50:01,904 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 12:50:01,905 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 12:50:01,905 INFO L158 Benchmark]: Toolchain (without parser) took 1573.79ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 73.3MB in the end (delta: 35.3MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2025-02-08 12:50:01,905 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:01,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 857.84ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 50.5MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-02-08 12:50:01,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.39ms. Allocated memory is still 142.6MB. Free memory was 50.5MB in the beginning and 48.0MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 12:50:01,906 INFO L158 Benchmark]: Boogie Preprocessor took 32.45ms. Allocated memory is still 142.6MB. Free memory was 48.0MB in the beginning and 46.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:01,906 INFO L158 Benchmark]: IcfgBuilder took 234.76ms. Allocated memory is still 142.6MB. Free memory was 46.5MB in the beginning and 101.6MB in the end (delta: -55.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2025-02-08 12:50:01,906 INFO L158 Benchmark]: TraceAbstraction took 385.53ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 73.3MB in the end (delta: 28.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 12:50:01,906 INFO L158 Benchmark]: Witness Printer took 2.65ms. Allocated memory is still 142.6MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:01,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 857.84ms. Allocated memory is still 142.6MB. Free memory was 108.5MB in the beginning and 50.5MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.39ms. Allocated memory is still 142.6MB. Free memory was 50.5MB in the beginning and 48.0MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.45ms. Allocated memory is still 142.6MB. Free memory was 48.0MB in the beginning and 46.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 234.76ms. Allocated memory is still 142.6MB. Free memory was 46.5MB in the beginning and 101.6MB in the end (delta: -55.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 385.53ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 73.3MB in the end (delta: 28.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 2.65ms. Allocated memory is still 142.6MB. Free memory is still 73.3MB. 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559, overapproximation of fgets at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 22 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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 12:50:01,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 12:50:04,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 12:50:04,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-02-08 12:50:04,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 12:50:04,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 12:50:04,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-02-08 12:50:04,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 12:50:04,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 12:50:04,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 12:50:04,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 12:50:04,379 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 12:50:04,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 12:50:04,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 12:50:04,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 12:50:04,380 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 12:50:04,381 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 12:50:04,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 12:50:04,381 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 12:50:04,382 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 12:50:04,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 12:50:04,382 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 12:50:04,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 12:50:04,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 12:50:04,382 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 -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2025-02-08 12:50:04,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 12:50:04,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 12:50:04,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 12:50:04,618 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 12:50:04,618 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 12:50:04,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2025-02-08 12:50:05,847 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3133b1b49/f9137a782a4049879c60cdd7dea38383/FLAG1e1475ad4 [2025-02-08 12:50:06,183 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 12:50:06,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2025-02-08 12:50:06,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3133b1b49/f9137a782a4049879c60cdd7dea38383/FLAG1e1475ad4 [2025-02-08 12:50:06,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3133b1b49/f9137a782a4049879c60cdd7dea38383 [2025-02-08 12:50:06,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 12:50:06,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 12:50:06,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 12:50:06,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 12:50:06,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 12:50:06,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:50:06" (1/1) ... [2025-02-08 12:50:06,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302bd6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:06, skipping insertion in model container [2025-02-08 12:50:06,435 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 12:50:06" (1/1) ... [2025-02-08 12:50:06,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 12:50:06,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 12:50:06,870 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 12:50:06,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 12:50:07,064 INFO L204 MainTranslator]: Completed translation [2025-02-08 12:50:07,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07 WrapperNode [2025-02-08 12:50:07,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 12:50:07,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 12:50:07,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 12:50:07,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 12:50:07,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,112 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2025-02-08 12:50:07,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 12:50:07,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 12:50:07,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 12:50:07,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 12:50:07,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,125 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,134 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-02-08 12:50:07,134 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,134 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,138 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,140 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 12:50:07,143 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 12:50:07,143 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 12:50:07,143 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 12:50:07,144 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (1/1) ... [2025-02-08 12:50:07,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 12:50:07,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 12:50:07,170 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 12:50:07,174 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 12:50:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-02-08 12:50:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-02-08 12:50:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 12:50:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 12:50:07,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 12:50:07,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 12:50:07,315 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 12:50:07,318 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 12:50:07,441 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-02-08 12:50:07,441 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 12:50:07,454 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 12:50:07,454 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 12:50:07,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:50:07 BoogieIcfgContainer [2025-02-08 12:50:07,455 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 12:50:07,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 12:50:07,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 12:50:07,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 12:50:07,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 12:50:06" (1/3) ... [2025-02-08 12:50:07,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7137555a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:50:07, skipping insertion in model container [2025-02-08 12:50:07,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 12:50:07" (2/3) ... [2025-02-08 12:50:07,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7137555a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 12:50:07, skipping insertion in model container [2025-02-08 12:50:07,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:50:07" (3/3) ... [2025-02-08 12:50:07,468 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2025-02-08 12:50:07,477 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 12:50:07,478 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i that has 2 procedures, 21 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-08 12:50:07,507 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 12:50:07,514 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;@311ba8a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 12:50:07,514 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 12:50:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 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 12:50:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 12:50:07,520 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 12:50:07,520 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 12:50:07,520 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 12:50:07,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 12:50:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash 412552476, now seen corresponding path program 1 times [2025-02-08 12:50:07,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 12:50:07,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171499819] [2025-02-08 12:50:07,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 12:50:07,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 12:50:07,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 12:50:07,532 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 12:50:07,534 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 12:50:07,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 12:50:07,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 12:50:07,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 12:50:07,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 12:50:07,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 12:50:07,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 12:50:07,686 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 12:50:07,686 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 12:50:07,687 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 12:50:07,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171499819] [2025-02-08 12:50:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171499819] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 12:50:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 12:50:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 12:50:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188948372] [2025-02-08 12:50:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 12:50:07,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 12:50:07,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 12:50:07,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 12:50:07,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 12:50:07,704 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) 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 12:50:07,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 12:50:07,718 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2025-02-08 12:50:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 12:50:07,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 12:50:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 12:50:07,727 INFO L225 Difference]: With dead ends: 34 [2025-02-08 12:50:07,727 INFO L226 Difference]: Without dead ends: 14 [2025-02-08 12:50:07,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 12:50:07,734 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 12:50:07,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 21 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 12:50:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-02-08 12:50:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-02-08 12:50:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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 12:50:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-02-08 12:50:07,756 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2025-02-08 12:50:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 12:50:07,756 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-02-08 12:50:07,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) 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 12:50:07,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-02-08 12:50:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 12:50:07,757 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 12:50:07,757 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 12:50:07,771 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 12:50:07,958 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 12:50:07,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 12:50:07,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 12:50:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1325107290, now seen corresponding path program 1 times [2025-02-08 12:50:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 12:50:07,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570578513] [2025-02-08 12:50:07,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 12:50:07,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 12:50:07,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 12:50:07,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 12:50:07,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 12:50:08,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 12:50:08,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 12:50:08,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 12:50:08,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 12:50:08,034 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 12:50:08,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 12:50:08,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 12:50:08,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 12:50:08,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 12:50:08,067 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 12:50:08,067 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 12:50:08,068 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-08 12:50:08,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-08 12:50:08,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 12:50:08,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 12:50:08,273 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 12:50:08,287 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 12:50:08,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 12:50:08 BoogieIcfgContainer [2025-02-08 12:50:08,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 12:50:08,289 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 12:50:08,289 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 12:50:08,290 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 12:50:08,290 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 12:50:07" (3/4) ... [2025-02-08 12:50:08,292 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 12:50:08,292 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 12:50:08,293 INFO L158 Benchmark]: Toolchain (without parser) took 1863.53ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 88.2MB in the beginning and 193.1MB in the end (delta: -104.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2025-02-08 12:50:08,293 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:08,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.96ms. Allocated memory is still 117.4MB. Free memory was 88.0MB in the beginning and 65.7MB in the end (delta: 22.3MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2025-02-08 12:50:08,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.54ms. Allocated memory is still 117.4MB. Free memory was 65.7MB in the beginning and 63.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:08,294 INFO L158 Benchmark]: Boogie Preprocessor took 28.42ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 61.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:08,294 INFO L158 Benchmark]: IcfgBuilder took 311.68ms. Allocated memory is still 117.4MB. Free memory was 60.6MB in the beginning and 46.8MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 12:50:08,294 INFO L158 Benchmark]: TraceAbstraction took 832.66ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 46.3MB in the beginning and 193.8MB in the end (delta: -147.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:08,294 INFO L158 Benchmark]: Witness Printer took 3.09ms. Allocated memory is still 243.3MB. Free memory was 193.8MB in the beginning and 193.1MB in the end (delta: 700.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 12:50:08,296 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.96ms. Allocated memory is still 117.4MB. Free memory was 88.0MB in the beginning and 65.7MB in the end (delta: 22.3MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.54ms. Allocated memory is still 117.4MB. Free memory was 65.7MB in the beginning and 63.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.42ms. Allocated memory is still 117.4MB. Free memory was 63.1MB in the beginning and 61.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 311.68ms. Allocated memory is still 117.4MB. Free memory was 60.6MB in the beginning and 46.8MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 832.66ms. Allocated memory was 117.4MB in the beginning and 243.3MB in the end (delta: 125.8MB). Free memory was 46.3MB in the beginning and 193.8MB in the end (delta: -147.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.09ms. Allocated memory is still 243.3MB. Free memory was 193.8MB in the beginning and 193.1MB in the end (delta: 700.9kB). 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559, overapproximation of fgets at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 21 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 12:50:08,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample