./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 14:06:24,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 14:06:24,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-03-04 14:06:24,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 14:06:24,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 14:06:24,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 14:06:24,304 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 14:06:24,304 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 14:06:24,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 14:06:24,304 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 14:06:24,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 14:06:24,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 14:06:24,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 14:06:24,304 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 14:06:24,304 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 14:06:24,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 14:06:24,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 14:06:24,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 14:06:24,305 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:06:24,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 14:06:24,305 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 14:06:24,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 14:06:24,306 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 14:06:24,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 14:06:24,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 14:06:24,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 14:06:24,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 14:06:24,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 14:06:24,306 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/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 -> f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc [2025-03-04 14:06:24,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 14:06:24,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 14:06:24,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 14:06:24,569 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 14:06:24,571 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 14:06:24,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2025-03-04 14:06:25,782 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee30b5adf/95eeadef4c96419d8e36124838634c7e/FLAG565a1d963 [2025-03-04 14:06:26,092 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 14:06:26,094 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2025-03-04 14:06:26,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee30b5adf/95eeadef4c96419d8e36124838634c7e/FLAG565a1d963 [2025-03-04 14:06:26,122 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee30b5adf/95eeadef4c96419d8e36124838634c7e [2025-03-04 14:06:26,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 14:06:26,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 14:06:26,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 14:06:26,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 14:06:26,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 14:06:26,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9801bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26, skipping insertion in model container [2025-03-04 14:06:26,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,160 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 14:06:26,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:06:26,602 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 14:06:26,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:06:26,743 INFO L204 MainTranslator]: Completed translation [2025-03-04 14:06:26,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26 WrapperNode [2025-03-04 14:06:26,743 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 14:06:26,744 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 14:06:26,744 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 14:06:26,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 14:06:26,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,775 INFO L138 Inliner]: procedures = 498, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2025-03-04 14:06:26,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 14:06:26,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 14:06:26,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 14:06:26,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 14:06:26,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,789 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]. [2025-03-04 14:06:26,790 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,790 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,793 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 14:06:26,797 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 14:06:26,797 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 14:06:26,797 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 14:06:26,798 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (1/1) ... [2025-03-04 14:06:26,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:06:26,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 14:06:26,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 14:06:26,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 14:06:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-04 14:06:26,862 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-04 14:06:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 14:06:26,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 14:06:26,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 14:06:26,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 14:06:26,974 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 14:06:26,976 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 14:06:27,079 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2025-03-04 14:06:27,079 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 14:06:27,086 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 14:06:27,086 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 14:06:27,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:27 BoogieIcfgContainer [2025-03-04 14:06:27,087 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 14:06:27,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 14:06:27,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 14:06:27,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 14:06:27,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:06:26" (1/3) ... [2025-03-04 14:06:27,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7356eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:06:27, skipping insertion in model container [2025-03-04 14:06:27,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:26" (2/3) ... [2025-03-04 14:06:27,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7356eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:06:27, skipping insertion in model container [2025-03-04 14:06:27,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:27" (3/3) ... [2025-03-04 14:06:27,097 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2025-03-04 14:06:27,107 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 14:06:27,109 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i that has 2 procedures, 30 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 14:06:27,146 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 14:06:27,153 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;@332e4165, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 14:06:27,153 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 14:06:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 14:06:27,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 14:06:27,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 14:06:27,162 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 14:06:27,162 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 14:06:27,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 14:06:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash 336879100, now seen corresponding path program 1 times [2025-03-04 14:06:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 14:06:27,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130553101] [2025-03-04 14:06:27,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 14:06:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 14:06:27,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 14:06:27,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 14:06:27,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:06:27,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 14:06:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 14:06:27,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 14:06:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130553101] [2025-03-04 14:06:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130553101] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 14:06:27,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 14:06:27,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 14:06:27,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341053524] [2025-03-04 14:06:27,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 14:06:27,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 14:06:27,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 14:06:27,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 14:06:27,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 14:06:27,370 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-03-04 14:06:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 14:06:27,387 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2025-03-04 14:06:27,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 14:06:27,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2025-03-04 14:06:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 14:06:27,393 INFO L225 Difference]: With dead ends: 50 [2025-03-04 14:06:27,394 INFO L226 Difference]: Without dead ends: 18 [2025-03-04 14:06:27,395 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 [2025-03-04 14:06:27,397 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 14:06:27,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 14:06:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-03-04 14:06:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-03-04 14:06:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 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) [2025-03-04 14:06:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-03-04 14:06:27,421 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2025-03-04 14:06:27,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 14:06:27,421 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-03-04 14:06:27,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-03-04 14:06:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-03-04 14:06:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 14:06:27,423 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 14:06:27,423 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 14:06:27,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 14:06:27,423 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 14:06:27,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 14:06:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1799964761, now seen corresponding path program 1 times [2025-03-04 14:06:27,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 14:06:27,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870752234] [2025-03-04 14:06:27,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 14:06:27,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 14:06:27,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 14:06:27,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 14:06:27,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:06:27,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:06:27,462 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 14:06:27,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 14:06:27,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 14:06:27,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:06:27,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:06:27,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 14:06:27,489 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 14:06:27,490 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-04 14:06:27,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-04 14:06:27,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 14:06:27,495 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 14:06:27,508 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 14:06:27,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 02:06:27 BoogieIcfgContainer [2025-03-04 14:06:27,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 14:06:27,510 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 14:06:27,510 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 14:06:27,510 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 14:06:27,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:27" (3/4) ... [2025-03-04 14:06:27,512 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 14:06:27,513 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 14:06:27,513 INFO L158 Benchmark]: Toolchain (without parser) took 1388.49ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 72.4MB in the end (delta: 36.2MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2025-03-04 14:06:27,513 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:06:27,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.54ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 49.6MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-03-04 14:06:27,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.18ms. Allocated memory is still 142.6MB. Free memory was 49.6MB in the beginning and 47.0MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 14:06:27,514 INFO L158 Benchmark]: Boogie Preprocessor took 20.97ms. Allocated memory is still 142.6MB. Free memory was 47.0MB in the beginning and 45.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:06:27,514 INFO L158 Benchmark]: IcfgBuilder took 289.65ms. Allocated memory is still 142.6MB. Free memory was 45.5MB in the beginning and 100.7MB in the end (delta: -55.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2025-03-04 14:06:27,514 INFO L158 Benchmark]: TraceAbstraction took 418.58ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 72.4MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 14:06:27,514 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 142.6MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:06:27,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 617.54ms. Allocated memory is still 142.6MB. Free memory was 108.6MB in the beginning and 49.6MB in the end (delta: 59.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.18ms. Allocated memory is still 142.6MB. Free memory was 49.6MB in the beginning and 47.0MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.97ms. Allocated memory is still 142.6MB. Free memory was 47.0MB in the beginning and 45.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 289.65ms. Allocated memory is still 142.6MB. Free memory was 45.5MB in the beginning and 100.7MB in the end (delta: -55.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * TraceAbstraction took 418.58ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 72.4MB in the end (delta: 27.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 142.6MB. Free memory is still 72.4MB. 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: 1575]: 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. 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] [L1588] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1588] 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] [L1589] CALL CWE191_Integer_Underflow__int_fgets_postdec_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: 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] [L1554] case 6: [L1556] 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] [L1554] case 6: [L1559] data = atoi(inputBuffer) [L1573] case 7: [L1575] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1575]: 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, 30 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 33 mSDtfsCounter, 4 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=30occurred 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, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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 [2025-03-04 14:06:27,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 14:06:29,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 14:06:29,488 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-03-04 14:06:29,492 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 14:06:29,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 14:06:29,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-03-04 14:06:29,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 14:06:29,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 14:06:29,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 14:06:29,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 14:06:29,508 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 14:06:29,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 14:06:29,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 14:06:29,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 14:06:29,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 14:06:29,508 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 14:06:29,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 14:06:29,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 14:06:29,509 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 14:06:29,510 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:06:29,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 14:06:29,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 14:06:29,511 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 14:06:29,511 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 14:06:29,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 14:06:29,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 14:06:29,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 14:06:29,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 14:06:29,511 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/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 -> f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc [2025-03-04 14:06:29,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 14:06:29,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 14:06:29,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 14:06:29,784 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 14:06:29,784 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 14:06:29,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2025-03-04 14:06:30,890 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2f84b2a/e532906a43c94db7913fd28fd0fdf9b3/FLAGbbee92572 [2025-03-04 14:06:31,208 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 14:06:31,212 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2025-03-04 14:06:31,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2f84b2a/e532906a43c94db7913fd28fd0fdf9b3/FLAGbbee92572 [2025-03-04 14:06:31,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2f84b2a/e532906a43c94db7913fd28fd0fdf9b3 [2025-03-04 14:06:31,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 14:06:31,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 14:06:31,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 14:06:31,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 14:06:31,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 14:06:31,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:31,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9cf985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31, skipping insertion in model container [2025-03-04 14:06:31,261 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:31,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 14:06:31,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:06:31,816 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 14:06:31,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 14:06:31,984 INFO L204 MainTranslator]: Completed translation [2025-03-04 14:06:31,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31 WrapperNode [2025-03-04 14:06:31,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 14:06:31,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 14:06:31,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 14:06:31,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 14:06:31,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,027 INFO L138 Inliner]: procedures = 503, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2025-03-04 14:06:32,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 14:06:32,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 14:06:32,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 14:06:32,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 14:06:32,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,038 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,050 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]. [2025-03-04 14:06:32,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,055 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 14:06:32,064 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 14:06:32,065 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 14:06:32,065 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 14:06:32,065 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (1/1) ... [2025-03-04 14:06:32,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 14:06:32,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 14:06:32,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 14:06:32,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 14:06:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-03-04 14:06:32,132 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-03-04 14:06:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 14:06:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 14:06:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 14:06:32,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 14:06:32,240 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 14:06:32,242 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 14:06:32,378 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-03-04 14:06:32,379 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 14:06:32,386 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 14:06:32,387 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 14:06:32,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:32 BoogieIcfgContainer [2025-03-04 14:06:32,387 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 14:06:32,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 14:06:32,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 14:06:32,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 14:06:32,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:06:31" (1/3) ... [2025-03-04 14:06:32,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329c30e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:06:32, skipping insertion in model container [2025-03-04 14:06:32,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:31" (2/3) ... [2025-03-04 14:06:32,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329c30e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:06:32, skipping insertion in model container [2025-03-04 14:06:32,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:32" (3/3) ... [2025-03-04 14:06:32,396 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2025-03-04 14:06:32,408 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 14:06:32,410 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i that has 2 procedures, 30 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 14:06:32,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 14:06:32,473 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;@7de44ca4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 14:06:32,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-04 14:06:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-04 14:06:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-04 14:06:32,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 14:06:32,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 14:06:32,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 14:06:32,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 14:06:32,489 INFO L85 PathProgramCache]: Analyzing trace with hash 336879100, now seen corresponding path program 1 times [2025-03-04 14:06:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 14:06:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529895918] [2025-03-04 14:06:32,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 14:06:32,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 14:06:32,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 14:06:32,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 14:06:32,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 14:06:32,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 14:06:32,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 14:06:32,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:06:32,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 14:06:32,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-04 14:06:32,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 14:06:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 14:06:32,619 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 14:06:32,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-04 14:06:32,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529895918] [2025-03-04 14:06:32,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529895918] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 14:06:32,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 14:06:32,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 14:06:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785359107] [2025-03-04 14:06:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 14:06:32,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 14:06:32,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-04 14:06:32,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 14:06:32,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 14:06:32,640 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-03-04 14:06:32,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 14:06:32,659 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2025-03-04 14:06:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 14:06:32,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 13 [2025-03-04 14:06:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 14:06:32,666 INFO L225 Difference]: With dead ends: 49 [2025-03-04 14:06:32,666 INFO L226 Difference]: Without dead ends: 16 [2025-03-04 14:06:32,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 14:06:32,671 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 14:06:32,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 14:06:32,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-03-04 14:06:32,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-03-04 14:06:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) 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) [2025-03-04 14:06:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-03-04 14:06:32,700 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2025-03-04 14:06:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 14:06:32,701 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-03-04 14:06:32,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-03-04 14:06:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-03-04 14:06:32,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 14:06:32,703 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 14:06:32,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 14:06:32,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 14:06:32,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 14:06:32,904 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-03-04 14:06:32,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 14:06:32,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1799964761, now seen corresponding path program 1 times [2025-03-04 14:06:32,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-04 14:06:32,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376026099] [2025-03-04 14:06:32,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 14:06:32,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 14:06:32,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 14:06:32,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 14:06:32,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 14:06:32,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 14:06:32,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 14:06:32,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:06:32,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:06:32,979 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 14:06:32,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 14:06:32,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 14:06:32,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 14:06:32,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 14:06:33,016 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-04 14:06:33,016 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 14:06:33,017 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-03-04 14:06:33,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-03-04 14:06:33,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 14:06:33,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 14:06:33,221 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 14:06:33,235 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 14:06:33,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 02:06:33 BoogieIcfgContainer [2025-03-04 14:06:33,239 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 14:06:33,240 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 14:06:33,240 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 14:06:33,240 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 14:06:33,241 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:32" (3/4) ... [2025-03-04 14:06:33,242 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-04 14:06:33,244 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 14:06:33,244 INFO L158 Benchmark]: Toolchain (without parser) took 1991.80ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 26.6MB in the end (delta: 29.5MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2025-03-04 14:06:33,245 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:06:33,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 730.61ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 50.4MB in the end (delta: 5.7MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. [2025-03-04 14:06:33,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.80ms. Allocated memory is still 83.9MB. Free memory was 50.4MB in the beginning and 47.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:06:33,246 INFO L158 Benchmark]: Boogie Preprocessor took 34.93ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 45.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:06:33,246 INFO L158 Benchmark]: IcfgBuilder took 322.50ms. Allocated memory is still 83.9MB. Free memory was 45.3MB in the beginning and 31.6MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 14:06:33,248 INFO L158 Benchmark]: TraceAbstraction took 850.16ms. Allocated memory is still 83.9MB. Free memory was 30.8MB in the beginning and 26.6MB in the end (delta: 4.3MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2025-03-04 14:06:33,248 INFO L158 Benchmark]: Witness Printer took 3.80ms. Allocated memory is still 83.9MB. Free memory is still 26.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 14:06:33,249 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 730.61ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 50.4MB in the end (delta: 5.7MB). Peak memory consumption was 58.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.80ms. Allocated memory is still 83.9MB. Free memory was 50.4MB in the beginning and 47.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.93ms. Allocated memory is still 83.9MB. Free memory was 47.7MB in the beginning and 45.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 322.50ms. Allocated memory is still 83.9MB. Free memory was 45.3MB in the beginning and 31.6MB in the end (delta: 13.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 850.16ms. Allocated memory is still 83.9MB. Free memory was 30.8MB in the beginning and 26.6MB in the end (delta: 4.3MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. * Witness Printer took 3.80ms. Allocated memory is still 83.9MB. Free memory is still 26.6MB. 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: 1575]: 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. 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] [L1588] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1588] 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] [L1589] CALL CWE191_Integer_Underflow__int_fgets_postdec_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: 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] [L1554] case 6: [L1556] 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] [L1554] case 6: [L1559] data = atoi(inputBuffer) [L1573] case 7: [L1575] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1575]: 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, 30 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 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 [2025-03-04 14:06:33,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample