./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_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 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 22:37:22,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 22:37:22,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-10-24 22:37:22,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 22:37:22,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 22:37:22,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 22:37:22,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 22:37:22,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 22:37:22,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 22:37:22,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 22:37:22,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 22:37:22,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 22:37:22,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 22:37:22,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 22:37:22,334 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 22:37:22,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 22:37:22,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 22:37:22,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 22:37:22,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 22:37:22,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 22:37:22,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 22:37:22,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 22:37:22,337 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 22:37:22,337 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 22:37:22,337 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 22:37:22,338 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 22:37:22,338 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 22:37:22,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 22:37:22,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 22:37:22,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 22:37:22,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 22:37:22,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 22:37:22,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 22:37:22,340 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 22:37:22,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 22:37:22,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 22:37:22,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 22:37:22,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 22:37:22,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 22:37:22,343 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 22:37:22,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 22:37:22,343 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 [2024-10-24 22:37:22,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 22:37:22,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 22:37:22,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 22:37:22,600 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 22:37:22,600 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 22:37:22,601 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2024-10-24 22:37:24,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 22:37:24,367 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 22:37:24,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2024-10-24 22:37:24,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331185994/6cbcf283ef4a46129ff4de91ded8e012/FLAG20fc62171 [2024-10-24 22:37:24,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/331185994/6cbcf283ef4a46129ff4de91ded8e012 [2024-10-24 22:37:24,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 22:37:24,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 22:37:24,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 22:37:24,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 22:37:24,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 22:37:24,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:37:24" (1/1) ... [2024-10-24 22:37:24,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c818cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:24, skipping insertion in model container [2024-10-24 22:37:24,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:37:24" (1/1) ... [2024-10-24 22:37:24,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 22:37:25,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 22:37:25,228 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 22:37:25,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 22:37:25,482 INFO L204 MainTranslator]: Completed translation [2024-10-24 22:37:25,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25 WrapperNode [2024-10-24 22:37:25,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 22:37:25,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 22:37:25,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 22:37:25,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 22:37:25,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,556 INFO L138 Inliner]: procedures = 500, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-10-24 22:37:25,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 22:37:25,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 22:37:25,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 22:37:25,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 22:37:25,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,572 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,601 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-10-24 22:37:25,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 22:37:25,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 22:37:25,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 22:37:25,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 22:37:25,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (1/1) ... [2024-10-24 22:37:25,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 22:37:25,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 22:37:25,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 22:37:25,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 22:37:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-10-24 22:37:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-10-24 22:37:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 22:37:25,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 22:37:25,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 22:37:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2024-10-24 22:37:25,708 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2024-10-24 22:37:25,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 22:37:25,839 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 22:37:25,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 22:37:25,974 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-10-24 22:37:25,978 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 22:37:26,021 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 22:37:26,021 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 22:37:26,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:37:26 BoogieIcfgContainer [2024-10-24 22:37:26,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 22:37:26,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 22:37:26,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 22:37:26,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 22:37:26,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:37:24" (1/3) ... [2024-10-24 22:37:26,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43434838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:37:26, skipping insertion in model container [2024-10-24 22:37:26,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:25" (2/3) ... [2024-10-24 22:37:26,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43434838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:37:26, skipping insertion in model container [2024-10-24 22:37:26,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:37:26" (3/3) ... [2024-10-24 22:37:26,032 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2024-10-24 22:37:26,048 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 22:37:26,048 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 22:37:26,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 22:37:26,122 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;@34d84ff7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 22:37:26,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 22:37:26,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-24 22:37:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-24 22:37:26,138 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 22:37:26,139 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 22:37:26,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-24 22:37:26,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 22:37:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1539371039, now seen corresponding path program 1 times [2024-10-24 22:37:26,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 22:37:26,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486757039] [2024-10-24 22:37:26,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 22:37:26,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 22:37:26,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:26,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 22:37:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:26,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 22:37:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:26,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 22:37:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 22:37:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 22:37:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486757039] [2024-10-24 22:37:26,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486757039] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 22:37:26,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405493002] [2024-10-24 22:37:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 22:37:26,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 22:37:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 22:37:26,580 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) [2024-10-24 22:37:26,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 22:37:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:26,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 22:37:26,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 22:37:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 22:37:26,748 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 22:37:26,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405493002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 22:37:26,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 22:37:26,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-24 22:37:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366310065] [2024-10-24 22:37:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 22:37:26,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 22:37:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 22:37:26,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 22:37:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 22:37:26,776 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 22:37:26,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 22:37:26,807 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2024-10-24 22:37:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 22:37:26,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2024-10-24 22:37:26,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 22:37:26,816 INFO L225 Difference]: With dead ends: 35 [2024-10-24 22:37:26,816 INFO L226 Difference]: Without dead ends: 29 [2024-10-24 22:37:26,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 22:37:26,821 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 22:37:26,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 22:37:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-24 22:37:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-10-24 22:37:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-24 22:37:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-10-24 22:37:26,855 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2024-10-24 22:37:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 22:37:26,856 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-10-24 22:37:26,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 22:37:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-10-24 22:37:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 22:37:26,858 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 22:37:26,858 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 22:37:26,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 22:37:27,059 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,SelfDestructingSolverStorable0 [2024-10-24 22:37:27,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-24 22:37:27,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 22:37:27,061 INFO L85 PathProgramCache]: Analyzing trace with hash -475861885, now seen corresponding path program 1 times [2024-10-24 22:37:27,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 22:37:27,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104061281] [2024-10-24 22:37:27,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 22:37:27,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 22:37:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:27,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 22:37:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:27,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 22:37:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:27,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 22:37:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 22:37:27,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 22:37:27,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104061281] [2024-10-24 22:37:27,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104061281] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 22:37:27,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800337654] [2024-10-24 22:37:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 22:37:27,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 22:37:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 22:37:27,205 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) [2024-10-24 22:37:27,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 22:37:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:27,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 22:37:27,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 22:37:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 22:37:27,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 22:37:27,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800337654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 22:37:27,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 22:37:27,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-10-24 22:37:27,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657425681] [2024-10-24 22:37:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 22:37:27,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 22:37:27,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 22:37:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 22:37:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 22:37:27,331 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 22:37:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 22:37:27,348 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2024-10-24 22:37:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 22:37:27,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2024-10-24 22:37:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 22:37:27,351 INFO L225 Difference]: With dead ends: 30 [2024-10-24 22:37:27,351 INFO L226 Difference]: Without dead ends: 21 [2024-10-24 22:37:27,351 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 22:37:27,353 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 22:37:27,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 22:37:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-24 22:37:27,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-24 22:37:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 22:37:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-10-24 22:37:27,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-10-24 22:37:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 22:37:27,363 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-10-24 22:37:27,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 22:37:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-10-24 22:37:27,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-24 22:37:27,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 22:37:27,366 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 22:37:27,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 22:37:27,566 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,SelfDestructingSolverStorable1 [2024-10-24 22:37:27,567 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-24 22:37:27,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 22:37:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2102944804, now seen corresponding path program 1 times [2024-10-24 22:37:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 22:37:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961537710] [2024-10-24 22:37:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 22:37:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 22:37:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 22:37:27,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 22:37:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 22:37:27,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 22:37:27,628 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 22:37:27,630 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-10-24 22:37:27,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-10-24 22:37:27,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 22:37:27,635 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-24 22:37:27,666 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 22:37:27,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:37:27 BoogieIcfgContainer [2024-10-24 22:37:27,673 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 22:37:27,674 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 22:37:27,674 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 22:37:27,674 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 22:37:27,675 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:37:26" (3/4) ... [2024-10-24 22:37:27,677 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 22:37:27,678 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 22:37:27,680 INFO L158 Benchmark]: Toolchain (without parser) took 3256.59ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 97.0MB in the beginning and 144.0MB in the end (delta: -47.0MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2024-10-24 22:37:27,680 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 22:37:27,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1059.80ms. Allocated memory is still 155.2MB. Free memory was 96.8MB in the beginning and 86.2MB in the end (delta: 10.6MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. [2024-10-24 22:37:27,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.30ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 82.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 22:37:27,681 INFO L158 Benchmark]: Boogie Preprocessor took 67.06ms. Allocated memory is still 155.2MB. Free memory was 82.7MB in the beginning and 80.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 22:37:27,682 INFO L158 Benchmark]: RCFGBuilder took 397.93ms. Allocated memory is still 155.2MB. Free memory was 80.6MB in the beginning and 65.2MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-24 22:37:27,686 INFO L158 Benchmark]: TraceAbstraction took 1648.39ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 64.5MB in the beginning and 145.0MB in the end (delta: -80.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 22:37:27,687 INFO L158 Benchmark]: Witness Printer took 4.18ms. Allocated memory is still 230.7MB. Free memory was 145.0MB in the beginning and 144.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 22:37:27,688 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1059.80ms. Allocated memory is still 155.2MB. Free memory was 96.8MB in the beginning and 86.2MB in the end (delta: 10.6MB). Peak memory consumption was 37.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.30ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 82.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.06ms. Allocated memory is still 155.2MB. Free memory was 82.7MB in the beginning and 80.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.93ms. Allocated memory is still 155.2MB. Free memory was 80.6MB in the beginning and 65.2MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1648.39ms. Allocated memory was 155.2MB in the beginning and 230.7MB in the end (delta: 75.5MB). Free memory was 64.5MB in the beginning and 145.0MB in the end (delta: -80.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.18ms. Allocated memory is still 230.7MB. Free memory was 145.0MB in the beginning and 144.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566, overapproximation of large string literal at line 1585, overapproximation of fgets at line 1564. 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); [L1585] 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) [L1585] 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] [L1586] CALL CWE191_Integer_Underflow__int_fgets_sub_08_bad() [L1558] int data; [L1559] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; [L1560] RET staticReturnsTrue() 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] [L1560] COND TRUE staticReturnsTrue() [L1563] 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] [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; [L1574] RET staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] COND TRUE staticReturnsTrue() [L1577] 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: 1577]: 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 3 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 53 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-24 22:37:27,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_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 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 22:37:29,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 22:37:30,003 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-10-24 22:37:30,008 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 22:37:30,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 22:37:30,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-10-24 22:37:30,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 22:37:30,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 22:37:30,043 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 22:37:30,043 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 22:37:30,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 22:37:30,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 22:37:30,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 22:37:30,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 22:37:30,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 22:37:30,046 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 22:37:30,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 22:37:30,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 22:37:30,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 22:37:30,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 22:37:30,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 22:37:30,048 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 22:37:30,048 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 22:37:30,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 22:37:30,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 22:37:30,049 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 22:37:30,049 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 22:37:30,050 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 22:37:30,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 22:37:30,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 22:37:30,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 22:37:30,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 22:37:30,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 22:37:30,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 22:37:30,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 22:37:30,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 22:37:30,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 22:37:30,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 22:37:30,056 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 22:37:30,057 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 22:37:30,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 22:37:30,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 22:37:30,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 22:37:30,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 22:37:30,060 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 22:37:30,060 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d73e9a72f7576fdac9c73a92135fe49f0417f4813efc3db7b2cf90369a68901 [2024-10-24 22:37:30,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 22:37:30,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 22:37:30,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 22:37:30,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 22:37:30,417 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 22:37:30,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2024-10-24 22:37:31,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 22:37:32,250 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 22:37:32,251 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2024-10-24 22:37:32,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28175c47/4a92fbc997b34963be357d67b668fe2a/FLAG91ffba209 [2024-10-24 22:37:32,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28175c47/4a92fbc997b34963be357d67b668fe2a [2024-10-24 22:37:32,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 22:37:32,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 22:37:32,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 22:37:32,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 22:37:32,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 22:37:32,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:37:32" (1/1) ... [2024-10-24 22:37:32,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ca7848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:32, skipping insertion in model container [2024-10-24 22:37:32,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:37:32" (1/1) ... [2024-10-24 22:37:32,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 22:37:33,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 22:37:33,280 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 22:37:33,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 22:37:33,539 INFO L204 MainTranslator]: Completed translation [2024-10-24 22:37:33,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33 WrapperNode [2024-10-24 22:37:33,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 22:37:33,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 22:37:33,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 22:37:33,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 22:37:33,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,608 INFO L138 Inliner]: procedures = 505, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2024-10-24 22:37:33,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 22:37:33,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 22:37:33,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 22:37:33,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 22:37:33,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,642 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-10-24 22:37:33,644 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,645 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,651 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 22:37:33,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 22:37:33,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 22:37:33,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 22:37:33,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (1/1) ... [2024-10-24 22:37:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 22:37:33,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 22:37:33,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 22:37:33,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 22:37:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-10-24 22:37:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-10-24 22:37:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 22:37:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 22:37:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 22:37:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 22:37:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure staticReturnsTrue [2024-10-24 22:37:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure staticReturnsTrue [2024-10-24 22:37:33,939 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 22:37:33,942 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 22:37:34,098 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-24 22:37:34,098 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 22:37:34,146 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 22:37:34,148 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 22:37:34,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:37:34 BoogieIcfgContainer [2024-10-24 22:37:34,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 22:37:34,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 22:37:34,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 22:37:34,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 22:37:34,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:37:32" (1/3) ... [2024-10-24 22:37:34,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7604c868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:37:34, skipping insertion in model container [2024-10-24 22:37:34,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:37:33" (2/3) ... [2024-10-24 22:37:34,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7604c868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:37:34, skipping insertion in model container [2024-10-24 22:37:34,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:37:34" (3/3) ... [2024-10-24 22:37:34,161 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_08_bad.i [2024-10-24 22:37:34,183 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 22:37:34,184 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 22:37:34,242 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 22:37:34,248 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;@2da9309c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 22:37:34,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 22:37:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 17 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-24 22:37:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-24 22:37:34,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 22:37:34,259 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 22:37:34,259 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-24 22:37:34,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 22:37:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash -154274055, now seen corresponding path program 1 times [2024-10-24 22:37:34,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 22:37:34,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083584096] [2024-10-24 22:37:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 22:37:34,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 22:37:34,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 22:37:34,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 22:37:34,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 22:37:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 22:37:34,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 22:37:34,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 22:37:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 22:37:34,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 22:37:34,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 22:37:34,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083584096] [2024-10-24 22:37:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083584096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 22:37:34,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 22:37:34,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 22:37:34,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207620187] [2024-10-24 22:37:34,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 22:37:34,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 22:37:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 22:37:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 22:37:34,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 22:37:34,513 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 17 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 22:37:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 22:37:34,560 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-10-24 22:37:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 22:37:34,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2024-10-24 22:37:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 22:37:34,569 INFO L225 Difference]: With dead ends: 40 [2024-10-24 22:37:34,570 INFO L226 Difference]: Without dead ends: 19 [2024-10-24 22:37:34,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 22:37:34,577 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 22:37:34,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 22:37:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-24 22:37:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-24 22:37:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-24 22:37:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2024-10-24 22:37:34,616 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2024-10-24 22:37:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 22:37:34,617 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2024-10-24 22:37:34,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-24 22:37:34,619 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2024-10-24 22:37:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-24 22:37:34,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 22:37:34,621 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 22:37:34,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-24 22:37:34,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 22:37:34,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-24 22:37:34,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 22:37:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash 481063166, now seen corresponding path program 1 times [2024-10-24 22:37:34,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 22:37:34,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565316281] [2024-10-24 22:37:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 22:37:34,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 22:37:34,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 22:37:34,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 22:37:34,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 22:37:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 22:37:34,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 22:37:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 22:37:34,973 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-24 22:37:34,973 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 22:37:34,975 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-10-24 22:37:34,977 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-10-24 22:37:34,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-24 22:37:35,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 22:37:35,181 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 22:37:35,207 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 22:37:35,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:37:35 BoogieIcfgContainer [2024-10-24 22:37:35,211 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 22:37:35,212 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 22:37:35,212 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 22:37:35,213 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 22:37:35,213 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:37:34" (3/4) ... [2024-10-24 22:37:35,215 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 22:37:35,216 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 22:37:35,219 INFO L158 Benchmark]: Toolchain (without parser) took 2735.83ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 33.3MB in the beginning and 59.2MB in the end (delta: -25.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 22:37:35,219 INFO L158 Benchmark]: CDTParser took 0.97ms. Allocated memory is still 46.1MB. Free memory is still 22.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 22:37:35,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1056.83ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 33.0MB in the beginning and 59.0MB in the end (delta: -26.0MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-10-24 22:37:35,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.05ms. Allocated memory is still 92.3MB. Free memory was 59.0MB in the beginning and 55.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 22:37:35,220 INFO L158 Benchmark]: Boogie Preprocessor took 54.39ms. Allocated memory is still 92.3MB. Free memory was 55.9MB in the beginning and 53.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 22:37:35,220 INFO L158 Benchmark]: RCFGBuilder took 484.14ms. Allocated memory is still 92.3MB. Free memory was 53.2MB in the beginning and 35.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-24 22:37:35,221 INFO L158 Benchmark]: TraceAbstraction took 1059.08ms. Allocated memory is still 92.3MB. Free memory was 35.4MB in the beginning and 59.7MB in the end (delta: -24.4MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2024-10-24 22:37:35,222 INFO L158 Benchmark]: Witness Printer took 4.54ms. Allocated memory is still 92.3MB. Free memory was 59.7MB in the beginning and 59.2MB in the end (delta: 544.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 22:37:35,225 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97ms. Allocated memory is still 46.1MB. Free memory is still 22.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1056.83ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 33.0MB in the beginning and 59.0MB in the end (delta: -26.0MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.05ms. Allocated memory is still 92.3MB. Free memory was 59.0MB in the beginning and 55.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.39ms. Allocated memory is still 92.3MB. Free memory was 55.9MB in the beginning and 53.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 484.14ms. Allocated memory is still 92.3MB. Free memory was 53.2MB in the beginning and 35.9MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1059.08ms. Allocated memory is still 92.3MB. Free memory was 35.4MB in the beginning and 59.7MB in the end (delta: -24.4MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Witness Printer took 4.54ms. Allocated memory is still 92.3MB. Free memory was 59.7MB in the beginning and 59.2MB in the end (delta: 544.7kB). 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1566, overapproximation of large string literal at line 1585, overapproximation of fgets at line 1564. 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); [L1585] 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) [L1585] 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] [L1586] CALL CWE191_Integer_Underflow__int_fgets_sub_08_bad() [L1558] int data; [L1559] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1560] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; [L1560] RET staticReturnsTrue() 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] [L1560] COND TRUE staticReturnsTrue() [L1563] 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] [L1564] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1566] data = atoi(inputBuffer) [L1574] CALL staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1550] return 1; [L1574] RET staticReturnsTrue() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] COND TRUE staticReturnsTrue() [L1577] 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: 1577]: 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 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-24 22:37:35,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample