./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_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_67_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 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:28:10,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:28:11,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-01-10 05:28:11,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:28:11,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:28:11,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:28:11,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:28:11,031 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:28:11,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:28:11,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:28:11,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:28:11,032 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:28:11,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:28:11,033 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:28:11,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:28:11,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 05:28:11,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 05:28:11,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:28:11,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:28:11,034 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:28:11,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:28:11,034 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 -> 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 [2025-01-10 05:28:11,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:28:11,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:28:11,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:28:11,257 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:28:11,257 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:28:11,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2025-01-10 05:28:12,403 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7812bb04/561385c034df4e85a8ea93cec45ae03c/FLAGe5f89dcf7 [2025-01-10 05:28:12,769 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:28:12,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2025-01-10 05:28:12,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7812bb04/561385c034df4e85a8ea93cec45ae03c/FLAGe5f89dcf7 [2025-01-10 05:28:12,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f7812bb04/561385c034df4e85a8ea93cec45ae03c [2025-01-10 05:28:12,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:28:12,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:28:12,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:28:12,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:28:12,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:28:12,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:12" (1/1) ... [2025-01-10 05:28:12,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cbb6260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:12, skipping insertion in model container [2025-01-10 05:28:12,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:12" (1/1) ... [2025-01-10 05:28:13,033 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:28:13,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:28:13,522 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:28:13,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:28:13,666 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:28:13,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13 WrapperNode [2025-01-10 05:28:13,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:28:13,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:28:13,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:28:13,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:28:13,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,709 INFO L138 Inliner]: procedures = 499, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2025-01-10 05:28:13,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:28:13,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:28:13,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:28:13,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:28:13,716 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,719 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,739 INFO L175 MemorySlicer]: Split 5 memory accesses to 3 slices as follows [1, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-01-10 05:28:13,739 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,739 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,748 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,750 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,754 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:28:13,757 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:28:13,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:28:13,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:28:13,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (1/1) ... [2025-01-10 05:28:13,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:28:13,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:28:13,787 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 05:28:13,793 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 05:28:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:28:13,810 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:28:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 05:28:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 05:28:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 05:28:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:28:13,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 05:28:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 05:28:13,956 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:28:13,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:28:14,070 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-01-10 05:28:14,070 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:28:14,076 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:28:14,076 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:28:14,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:14 BoogieIcfgContainer [2025-01-10 05:28:14,076 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:28:14,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:28:14,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:28:14,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:28:14,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:28:12" (1/3) ... [2025-01-10 05:28:14,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a4b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:14, skipping insertion in model container [2025-01-10 05:28:14,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:13" (2/3) ... [2025-01-10 05:28:14,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56a4b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:14, skipping insertion in model container [2025-01-10 05:28:14,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:14" (3/3) ... [2025-01-10 05:28:14,085 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2025-01-10 05:28:14,101 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:28:14,103 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:28:14,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:28:14,149 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;@67802ac3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:28:14,150 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:28:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:28:14,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:28:14,158 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:28:14,158 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:28:14,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:28:14,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:28:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2025-01-10 05:28:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 05:28:14,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793114468] [2025-01-10 05:28:14,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:28:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 05:28:14,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:28:14,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:28:14,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:28:14,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:28:14,280 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:28:14,285 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:28:14,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:28:14,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:28:14,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:28:14,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 05:28:14,333 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:28:14,334 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:28:14,335 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:28:14,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 05:28:14,339 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-10 05:28:14,352 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:28:14,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:28:14 BoogieIcfgContainer [2025-01-10 05:28:14,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:28:14,355 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:28:14,355 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:28:14,356 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:28:14,356 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:14" (3/4) ... [2025-01-10 05:28:14,357 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:28:14,359 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:28:14,360 INFO L158 Benchmark]: Toolchain (without parser) took 1376.54ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 74.9MB in the end (delta: 28.1MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2025-01-10 05:28:14,360 INFO L158 Benchmark]: CDTParser took 0.25ms. 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 05:28:14,361 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.57ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 43.9MB in the end (delta: 59.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-01-10 05:28:14,362 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.35ms. Allocated memory is still 142.6MB. Free memory was 43.9MB in the beginning and 41.3MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:28:14,362 INFO L158 Benchmark]: Boogie Preprocessor took 46.95ms. Allocated memory is still 142.6MB. Free memory was 41.3MB in the beginning and 39.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:28:14,364 INFO L158 Benchmark]: RCFGBuilder took 319.55ms. Allocated memory is still 142.6MB. Free memory was 39.3MB in the beginning and 94.8MB in the end (delta: -55.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2025-01-10 05:28:14,364 INFO L158 Benchmark]: TraceAbstraction took 276.93ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 75.7MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 05:28:14,364 INFO L158 Benchmark]: Witness Printer took 3.54ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 74.9MB in the end (delta: 768.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:28:14,367 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 126.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.57ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 43.9MB in the end (delta: 59.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.35ms. Allocated memory is still 142.6MB. Free memory was 43.9MB in the beginning and 41.3MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.95ms. Allocated memory is still 142.6MB. Free memory was 41.3MB in the beginning and 39.3MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.55ms. Allocated memory is still 142.6MB. Free memory was 39.3MB in the beginning and 94.8MB in the end (delta: -55.4MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 276.93ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 75.7MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.54ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 74.9MB in the end (delta: 768.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of fgets at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_67_structType myStruct; [L1557] data = 0 [L1559] 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, myStruct={18:0}] [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] 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: 1583]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:28:14,382 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_67_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 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 05:28:16,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 05:28:16,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2025-01-10 05:28:16,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 05:28:16,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 05:28:16,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2025-01-10 05:28:16,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 05:28:16,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 05:28:16,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 05:28:16,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 05:28:16,377 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 05:28:16,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 05:28:16,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 05:28:16,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 05:28:16,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 05:28:16,380 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 05:28:16,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 05:28:16,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-10 05:28:16,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 05:28:16,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-10 05:28:16,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 05:28:16,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-10 05:28:16,381 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 05:28:16,382 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 05:28:16,382 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-01-10 05:28:16,382 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 05:28:16,382 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 05:28:16,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 05:28:16,382 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 05:28:16,382 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 05:28:16,382 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:28:16,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 05:28:16,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:28:16,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 05:28:16,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 05:28:16,384 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-10 05:28:16,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-10 05:28:16,384 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 05:28:16,384 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 05:28:16,384 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 05:28:16,384 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 05:28:16,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 05:28:16,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 05:28:16,385 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 -> 4db615e9042bc9d15216f1a564797da59c8921232edbe2f047b3390e1f375ad2 [2025-01-10 05:28:16,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 05:28:16,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 05:28:16,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 05:28:16,644 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 05:28:16,644 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 05:28:16,647 INFO L431 ainManager$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_67_bad.i [2025-01-10 05:28:17,776 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e3601c3a/e66fa823e36844f19853f213917d4609/FLAG0b06ccd26 [2025-01-10 05:28:18,078 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 05:28:18,079 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2025-01-10 05:28:18,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e3601c3a/e66fa823e36844f19853f213917d4609/FLAG0b06ccd26 [2025-01-10 05:28:18,332 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7e3601c3a/e66fa823e36844f19853f213917d4609 [2025-01-10 05:28:18,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 05:28:18,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 05:28:18,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 05:28:18,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 05:28:18,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 05:28:18,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:18" (1/1) ... [2025-01-10 05:28:18,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c5e40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:18, skipping insertion in model container [2025-01-10 05:28:18,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:28:18" (1/1) ... [2025-01-10 05:28:18,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 05:28:19,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:28:19,016 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 05:28:19,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 05:28:19,241 INFO L204 MainTranslator]: Completed translation [2025-01-10 05:28:19,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19 WrapperNode [2025-01-10 05:28:19,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 05:28:19,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 05:28:19,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 05:28:19,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 05:28:19,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,279 INFO L138 Inliner]: procedures = 504, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2025-01-10 05:28:19,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 05:28:19,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 05:28:19,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 05:28:19,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 05:28:19,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,300 INFO L175 MemorySlicer]: Split 5 memory accesses to 3 slices as follows [1, 2, 2]. 40 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-01-10 05:28:19,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,307 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,307 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,310 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 05:28:19,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 05:28:19,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 05:28:19,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 05:28:19,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (1/1) ... [2025-01-10 05:28:19,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 05:28:19,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:28:19,352 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 05:28:19,354 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 05:28:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2025-01-10 05:28:19,369 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2025-01-10 05:28:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 05:28:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 05:28:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-01-10 05:28:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-01-10 05:28:19,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 05:28:19,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-01-10 05:28:19,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-01-10 05:28:19,476 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 05:28:19,478 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 05:28:19,590 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2025-01-10 05:28:19,590 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 05:28:19,596 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 05:28:19,596 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 05:28:19,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:19 BoogieIcfgContainer [2025-01-10 05:28:19,596 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 05:28:19,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 05:28:19,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 05:28:19,601 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 05:28:19,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:28:18" (1/3) ... [2025-01-10 05:28:19,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b315e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:19, skipping insertion in model container [2025-01-10 05:28:19,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:28:19" (2/3) ... [2025-01-10 05:28:19,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b315e0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:28:19, skipping insertion in model container [2025-01-10 05:28:19,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:19" (3/3) ... [2025-01-10 05:28:19,602 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i [2025-01-10 05:28:19,629 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 05:28:19,630 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_67_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-01-10 05:28:19,681 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 05:28:19,692 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;@60a88c9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 05:28:19,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-10 05:28:19,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-10 05:28:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-10 05:28:19,701 INFO L210 NwaCegarLoop]: Found error trace [2025-01-10 05:28:19,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 05:28:19,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-01-10 05:28:19,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 05:28:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2025-01-10 05:28:19,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 05:28:19,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457860888] [2025-01-10 05:28:19,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 05:28:19,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 05:28:19,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 05:28:19,721 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 05:28:19,722 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 05:28:19,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:28:19,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:28:19,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:28:19,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:28:19,908 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 05:28:19,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 05:28:20,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 05:28:20,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 05:28:20,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 05:28:20,049 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 05:28:20,050 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 05:28:20,051 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-01-10 05:28:20,053 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-01-10 05:28:20,062 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 05:28:20,254 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 05:28:20,257 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-10 05:28:20,270 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 05:28:20,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:28:20 BoogieIcfgContainer [2025-01-10 05:28:20,275 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 05:28:20,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 05:28:20,276 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 05:28:20,276 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 05:28:20,276 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:28:19" (3/4) ... [2025-01-10 05:28:20,277 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 05:28:20,278 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 05:28:20,279 INFO L158 Benchmark]: Toolchain (without parser) took 1942.50ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 32.8MB in the end (delta: 23.3MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2025-01-10 05:28:20,279 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:28:20,280 INFO L158 Benchmark]: CACSL2BoogieTranslator took 904.56ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 49.5MB in the end (delta: 6.6MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2025-01-10 05:28:20,280 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.87ms. Allocated memory is still 83.9MB. Free memory was 49.5MB in the beginning and 46.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:28:20,280 INFO L158 Benchmark]: Boogie Preprocessor took 32.77ms. Allocated memory is still 83.9MB. Free memory was 46.7MB in the beginning and 44.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:28:20,280 INFO L158 Benchmark]: RCFGBuilder took 283.45ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 29.7MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 05:28:20,281 INFO L158 Benchmark]: TraceAbstraction took 677.75ms. Allocated memory is still 83.9MB. Free memory was 28.9MB in the beginning and 33.3MB in the end (delta: -4.3MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2025-01-10 05:28:20,281 INFO L158 Benchmark]: Witness Printer took 2.29ms. Allocated memory is still 83.9MB. Free memory was 33.3MB in the beginning and 32.8MB in the end (delta: 432.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 05:28:20,282 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 62.3MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 904.56ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 49.5MB in the end (delta: 6.6MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.87ms. Allocated memory is still 83.9MB. Free memory was 49.5MB in the beginning and 46.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.77ms. Allocated memory is still 83.9MB. Free memory was 46.7MB in the beginning and 44.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 283.45ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 29.7MB in the end (delta: 14.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 677.75ms. Allocated memory is still 83.9MB. Free memory was 28.9MB in the beginning and 33.3MB in the end (delta: -4.3MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. * Witness Printer took 2.29ms. Allocated memory is still 83.9MB. Free memory was 33.3MB in the beginning and 32.8MB in the end (delta: 432.6kB). 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: 1583]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of fgets at line 1560. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1575] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1575] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_67_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_67_structType myStruct; [L1557] data = 0 [L1559] 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, myStruct={7:0}] [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1569] myStruct.structFirst = data [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_67b_badSink(myStruct) [L1581] EXPR myStruct.structFirst [L1581] int data = myStruct.structFirst; [L1583] 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: 1583]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-10 05:28:20,300 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