./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_09_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_09_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 4c932873c26bac943c03b11a3b9dd837846dba703311d5b9b41bf722e0f4934a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:27:24,358 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:27:24,399 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-01-10 05:27:24,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:27:24,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:27:24,419 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:27:24,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:27:24,420 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:27:24,420 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:27:24,420 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:27:24,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:27:24,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:27:24,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:27:24,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:27:24,421 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:27:24,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:27:24,421 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:27:24,421 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 05:27:24,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:27:24,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:27:24,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:27:24,422 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:24,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:24,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:24,423 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:27:24,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:27:24,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 05:27:24,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 05:27:24,424 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:27:24,424 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:27:24,424 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:27:24,424 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:27:24,424 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 -> 4c932873c26bac943c03b11a3b9dd837846dba703311d5b9b41bf722e0f4934a [2025-01-10 05:27:24,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:27:24,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:27:24,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:27:24,660 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:27:24,661 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:27:24,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_09_bad.i [2025-01-10 05:27:25,877 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/379ff1350/ef49d6736ab047efa0d1730b3379df6b/FLAGd00e0a2f2 [2025-01-10 05:27:26,353 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:27:26,354 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_09_bad.i [2025-01-10 05:27:26,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/379ff1350/ef49d6736ab047efa0d1730b3379df6b/FLAGd00e0a2f2 [2025-01-10 05:27:26,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/379ff1350/ef49d6736ab047efa0d1730b3379df6b [2025-01-10 05:27:26,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:27:26,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:27:26,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:26,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:27:26,489 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:27:26,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:26" (1/1) ... [2025-01-10 05:27:26,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740e3586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:26, skipping insertion in model container [2025-01-10 05:27:26,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:26" (1/1) ... [2025-01-10 05:27:26,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:27:26,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:26,966 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:27:27,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:27,095 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:27:27,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27 WrapperNode [2025-01-10 05:27:27,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:27,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:27,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:27:27,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:27:27,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,117 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,130 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2025-01-10 05:27:27,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:27,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:27:27,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:27:27,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:27:27,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,149 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,162 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:27:27,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,169 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,174 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,180 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:27:27,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:27:27,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:27:27,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:27:27,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (1/1) ... [2025-01-10 05:27:27,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:27,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:27,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 05:27:27,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 05:27:27,261 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:27:27,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:27:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:27:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:27:27,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:27:27,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 05:27:27,402 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:27:27,405 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:27:27,528 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-01-10 05:27:27,528 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:27:27,541 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:27:27,542 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:27:27,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:27 BoogieIcfgContainer [2025-01-10 05:27:27,544 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:27:27,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:27:27,546 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:27:27,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:27:27,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:27:26" (1/3) ... [2025-01-10 05:27:27,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402aa15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:27, skipping insertion in model container [2025-01-10 05:27:27,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:27" (2/3) ... [2025-01-10 05:27:27,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402aa15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:27, skipping insertion in model container [2025-01-10 05:27:27,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:27" (3/3) ... [2025-01-10 05:27:27,556 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_09_bad.i [2025-01-10 05:27:27,571 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:27:27,572 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_09_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:27:27,631 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:27:27,644 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;@760c2c77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:27:27,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:27:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:27:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:27:27,653 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:27,654 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:27,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:27,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:27,660 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2025-01-10 05:27:27,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:27:27,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348042736] [2025-01-10 05:27:27,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:27:27,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:27:27,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:27:27,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:27,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 05:27:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 05:27:27,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 05:27:27,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348042736] [2025-01-10 05:27:27,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348042736] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 05:27:27,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 05:27:27,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 05:27:27,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055069460] [2025-01-10 05:27:27,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 05:27:27,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 05:27:27,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 05:27:27,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 05:27:27,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:27,901 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 05:27:27,924 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2025-01-10 05:27:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 05:27:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-10 05:27:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 05:27:27,932 INFO L225 Difference]: With dead ends: 40 [2025-01-10 05:27:27,933 INFO L226 Difference]: Without dead ends: 17 [2025-01-10 05:27:27,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:27,938 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 05:27:27,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 05:27:27,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-01-10 05:27:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-01-10 05:27:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 05:27:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-01-10 05:27:27,987 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2025-01-10 05:27:27,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 05:27:27,988 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-01-10 05:27:27,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:27,989 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-01-10 05:27:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 05:27:27,989 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:27,989 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:27,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 05:27:27,990 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:27,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:27,990 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2025-01-10 05:27:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:27:27,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771035929] [2025-01-10 05:27:27,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:27,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:27:28,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:27:28,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:27:28,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:28,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:28,037 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:27:28,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:27:28,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:27:28,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:28,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:28,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 05:27:28,077 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:27:28,078 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:27:28,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:27:28,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 05:27:28,083 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 05:27:28,103 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:27:28,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:27:28 BoogieIcfgContainer [2025-01-10 05:27:28,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:27:28,108 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:27:28,109 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:27:28,109 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:27:28,110 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:27" (3/4) ... [2025-01-10 05:27:28,111 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:27:28,113 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:27:28,114 INFO L158 Benchmark]: Toolchain (without parser) took 1629.19ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 69.2MB in the end (delta: 38.2MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2025-01-10 05:27:28,114 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:28,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 610.98ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 47.1MB in the end (delta: 60.2MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-01-10 05:27:28,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.67ms. Allocated memory is still 142.6MB. Free memory was 47.1MB in the beginning and 44.3MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:28,115 INFO L158 Benchmark]: Boogie Preprocessor took 50.69ms. Allocated memory is still 142.6MB. Free memory was 44.3MB in the beginning and 43.3MB in the end (delta: 952.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:28,115 INFO L158 Benchmark]: RCFGBuilder took 361.11ms. Allocated memory is still 142.6MB. Free memory was 43.3MB in the beginning and 99.6MB in the end (delta: -56.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2025-01-10 05:27:28,116 INFO L158 Benchmark]: TraceAbstraction took 561.93ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 70.0MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 05:27:28,116 INFO L158 Benchmark]: Witness Printer took 4.15ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 69.2MB in the end (delta: 751.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:28,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 610.98ms. Allocated memory is still 142.6MB. Free memory was 107.4MB in the beginning and 47.1MB in the end (delta: 60.2MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.67ms. Allocated memory is still 142.6MB. Free memory was 47.1MB in the beginning and 44.3MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.69ms. Allocated memory is still 142.6MB. Free memory was 44.3MB in the beginning and 43.3MB in the end (delta: 952.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 361.11ms. Allocated memory is still 142.6MB. Free memory was 43.3MB in the beginning and 99.6MB in the end (delta: -56.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * TraceAbstraction took 561.93ms. Allocated memory is still 142.6MB. Free memory was 98.8MB in the beginning and 70.0MB in the end (delta: 28.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.15ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 69.2MB in the end (delta: 751.6kB). 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: 1569]: 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 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] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_09_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] [L1552] COND TRUE \read(GLOBAL_CONST_TRUE) [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) [L1566] COND TRUE \read(GLOBAL_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] 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: 1569]: 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: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:27:28,142 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_sub_09_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 4c932873c26bac943c03b11a3b9dd837846dba703311d5b9b41bf722e0f4934a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:27:30,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:27:30,383 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-01-10 05:27:30,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:27:30,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:27:30,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-01-10 05:27:30,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:27:30,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:27:30,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:27:30,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:27:30,420 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:27:30,420 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:27:30,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:27:30,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:27:30,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:27:30,421 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:27:30,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:27:30,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:27:30,423 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:27:30,423 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:27:30,423 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:27:30,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:30,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:30,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:30,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:30,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:27:30,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:27:30,425 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 05:27:30,425 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 05:27:30,425 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:27:30,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:27:30,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:27:30,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:27:30,425 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 -> 4c932873c26bac943c03b11a3b9dd837846dba703311d5b9b41bf722e0f4934a [2025-01-10 05:27:30,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:27:30,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:27:30,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:27:30,794 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:27:30,794 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:27:30,796 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_09_bad.i [2025-01-10 05:27:32,123 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de80c6782/b06be52db73e40f78b7cfe468699fbcb/FLAGaa0efe837 [2025-01-10 05:27:32,392 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:27:32,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_09_bad.i [2025-01-10 05:27:32,421 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de80c6782/b06be52db73e40f78b7cfe468699fbcb/FLAGaa0efe837 [2025-01-10 05:27:32,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de80c6782/b06be52db73e40f78b7cfe468699fbcb [2025-01-10 05:27:32,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:27:32,444 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:27:32,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:32,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:27:32,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:27:32,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:32" (1/1) ... [2025-01-10 05:27:32,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3d8c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:32, skipping insertion in model container [2025-01-10 05:27:32,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:27:32" (1/1) ... [2025-01-10 05:27:32,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:27:33,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:33,125 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:27:33,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:27:33,339 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:27:33,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33 WrapperNode [2025-01-10 05:27:33,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:27:33,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:33,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:27:33,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:27:33,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,386 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2025-01-10 05:27:33,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:27:33,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:27:33,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:27:33,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:27:33,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,413 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2025-01-10 05:27:33,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,418 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,423 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:27:33,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:27:33,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:27:33,427 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:27:33,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (1/1) ... [2025-01-10 05:27:33,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:27:33,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:33,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 05:27:33,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 05:27:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:27:33,477 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:27:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 05:27:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:27:33,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:27:33,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:27:33,588 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:27:33,589 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:27:33,672 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2025-01-10 05:27:33,672 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:27:33,681 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:27:33,681 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:27:33,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:33 BoogieIcfgContainer [2025-01-10 05:27:33,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:27:33,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:27:33,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:27:33,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:27:33,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:27:32" (1/3) ... [2025-01-10 05:27:33,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1896b242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:33, skipping insertion in model container [2025-01-10 05:27:33,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:27:33" (2/3) ... [2025-01-10 05:27:33,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1896b242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:27:33, skipping insertion in model container [2025-01-10 05:27:33,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:33" (3/3) ... [2025-01-10 05:27:33,691 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_09_bad.i [2025-01-10 05:27:33,700 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:27:33,702 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_09_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:27:33,748 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:27:33,758 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;@34910ee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:27:33,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:27:33,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:27:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:27:33,766 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:33,766 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:33,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:33,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:33,771 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2025-01-10 05:27:33,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:27:33,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517536719] [2025-01-10 05:27:33,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:33,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 05:27:33,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-10 05:27:33,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:27:33,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:27:33,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:33,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 05:27:33,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 05:27:33,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 05:27:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 05:27:33,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 05:27:33,930 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 05:27:33,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517536719] [2025-01-10 05:27:33,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517536719] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 05:27:33,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 05:27:33,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 05:27:33,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479865732] [2025-01-10 05:27:33,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 05:27:33,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 05:27:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 05:27:33,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 05:27:33,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:33,948 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 05:27:33,971 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2025-01-10 05:27:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 05:27:33,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-01-10 05:27:33,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-10 05:27:33,977 INFO L225 Difference]: With dead ends: 49 [2025-01-10 05:27:33,977 INFO L226 Difference]: Without dead ends: 15 [2025-01-10 05:27:33,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 05:27:33,981 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-10 05:27:33,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-10 05:27:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-10 05:27:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-10 05:27:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 05:27:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2025-01-10 05:27:34,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2025-01-10 05:27:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-10 05:27:34,003 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2025-01-10 05:27:34,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 05:27:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2025-01-10 05:27:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-10 05:27:34,004 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:27:34,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:27:34,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 05:27:34,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:34,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:27:34,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:27:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2025-01-10 05:27:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:27:34,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1678406562] [2025-01-10 05:27:34,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:27:34,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:34,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:27:34,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 05:27:34,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-10 05:27:34,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:27:34,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:27:34,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:34,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:34,277 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:27:34,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 05:27:34,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 05:27:34,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:27:34,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:27:34,340 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 05:27:34,344 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:27:34,345 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:27:34,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:27:34,357 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 [2025-01-10 05:27:34,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:27:34,551 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 05:27:34,575 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:27:34,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:27:34 BoogieIcfgContainer [2025-01-10 05:27:34,579 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:27:34,580 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:27:34,581 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:27:34,581 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:27:34,581 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:27:33" (3/4) ... [2025-01-10 05:27:34,583 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:27:34,584 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:27:34,585 INFO L158 Benchmark]: Toolchain (without parser) took 2140.56ms. Allocated memory was 117.4MB in the beginning and 251.7MB in the end (delta: 134.2MB). Free memory was 88.9MB in the beginning and 204.6MB in the end (delta: -115.6MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2025-01-10 05:27:34,585 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:34,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 894.54ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 66.9MB in the end (delta: 21.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2025-01-10 05:27:34,586 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.10ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 64.3MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:34,586 INFO L158 Benchmark]: Boogie Preprocessor took 37.84ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 62.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:34,586 INFO L158 Benchmark]: RCFGBuilder took 255.43ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 48.5MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 05:27:34,587 INFO L158 Benchmark]: TraceAbstraction took 895.57ms. Allocated memory was 117.4MB in the beginning and 251.7MB in the end (delta: 134.2MB). Free memory was 48.0MB in the beginning and 204.6MB in the end (delta: -156.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:27:34,587 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 251.7MB. Free memory was 204.6MB in the beginning and 204.6MB in the end (delta: 42.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:27:34,588 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 894.54ms. Allocated memory is still 117.4MB. Free memory was 88.7MB in the beginning and 66.9MB in the end (delta: 21.8MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.10ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 64.3MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.84ms. Allocated memory is still 117.4MB. Free memory was 64.3MB in the beginning and 62.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 255.43ms. Allocated memory is still 117.4MB. Free memory was 61.7MB in the beginning and 48.5MB in the end (delta: 13.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 895.57ms. Allocated memory was 117.4MB in the beginning and 251.7MB in the end (delta: 134.2MB). Free memory was 48.0MB in the beginning and 204.6MB in the end (delta: -156.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 251.7MB. Free memory was 204.6MB in the beginning and 204.6MB in the end (delta: 42.6kB). Peak memory consumption was 8.4MB. 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: 1569]: 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 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] [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_sub_09_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] [L1552] COND TRUE \read(GLOBAL_CONST_TRUE) [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) [L1566] COND TRUE \read(GLOBAL_CONST_TRUE) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 31 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 40 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:27:34,603 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