./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_64_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d659dc6f0ad2d9acd88210dfc5f7c881a249899e90930440f45f83a63aaec4f7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:42:58,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:42:58,739 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-14 04:42:58,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:42:58,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:42:58,778 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:42:58,779 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:42:58,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:42:58,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:42:58,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:42:58,780 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:42:58,781 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:42:58,781 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:42:58,781 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:42:58,781 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:42:58,781 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:42:58,781 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:42:58,782 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:42:58,782 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:42:58,782 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:42:58,782 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:42:58,783 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:42:58,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:42:58,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:42:58,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:42:58,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:42:58,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:42:58,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:42:58,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:42:58,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:42:58,785 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:42:58,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:42:58,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:42:58,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:42:58,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:42:58,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:42:58,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:42:58,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:42:58,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:42:58,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:42:58,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:42:58,787 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:42:58,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:42:58,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:42:58,788 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:42:58,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:42:58,788 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> d659dc6f0ad2d9acd88210dfc5f7c881a249899e90930440f45f83a63aaec4f7 [2024-11-14 04:42:59,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:42:59,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:42:59,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:42:59,226 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:42:59,226 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:42:59,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_64_bad.i Unable to find full path for "g++" [2024-11-14 04:43:01,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:43:01,944 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:43:01,945 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_64_bad.i [2024-11-14 04:43:01,995 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data/ad29f0430/8211ca8df97d4ed992ec317e336fef6a/FLAGac89e28b0 [2024-11-14 04:43:02,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data/ad29f0430/8211ca8df97d4ed992ec317e336fef6a [2024-11-14 04:43:02,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:43:02,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:43:02,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:43:02,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:43:02,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:43:02,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66249944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02, skipping insertion in model container [2024-11-14 04:43:02,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:43:03,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:43:03,986 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:43:04,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:43:04,316 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:43:04,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04 WrapperNode [2024-11-14 04:43:04,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:43:04,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:43:04,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:43:04,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:43:04,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,395 INFO L138 Inliner]: procedures = 499, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-11-14 04:43:04,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:43:04,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:43:04,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:43:04,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:43:04,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,412 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:43:04,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:43:04,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:43:04,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:43:04,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (1/1) ... [2024-11-14 04:43:04,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:43:04,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:43:04,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:43:04,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:43:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-14 04:43:04,536 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-14 04:43:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:43:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 04:43:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:43:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:43:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:43:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:43:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 04:43:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:43:04,798 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:43:04,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:43:04,987 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-14 04:43:04,988 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:43:05,048 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:43:05,048 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:43:05,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:05 BoogieIcfgContainer [2024-11-14 04:43:05,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:43:05,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:43:05,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:43:05,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:43:05,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:43:02" (1/3) ... [2024-11-14 04:43:05,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ed1513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:43:05, skipping insertion in model container [2024-11-14 04:43:05,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:04" (2/3) ... [2024-11-14 04:43:05,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13ed1513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:43:05, skipping insertion in model container [2024-11-14 04:43:05,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:05" (3/3) ... [2024-11-14 04:43:05,068 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_64_bad.i [2024-11-14 04:43:05,091 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:43:05,093 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_64_bad.i that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-14 04:43:05,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:43:05,200 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=FINITE_AUTOMATA, 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;@5e8ca995, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:43:05,200 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 04:43:05,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:43:05,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-14 04:43:05,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:05,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:43:05,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 04:43:05,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:05,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1025860527, now seen corresponding path program 1 times [2024-11-14 04:43:05,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:43:05,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675420715] [2024-11-14 04:43:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:43:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:43:05,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:43:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:43:05,571 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 04:43:05,573 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:43:05,575 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-14 04:43:05,577 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-14 04:43:05,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:43:05,583 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 04:43:05,613 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:43:05,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:43:05 BoogieIcfgContainer [2024-11-14 04:43:05,619 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:43:05,621 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:43:05,621 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:43:05,621 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:43:05,623 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:05" (3/4) ... [2024-11-14 04:43:05,626 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 04:43:05,627 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:43:05,629 INFO L158 Benchmark]: Toolchain (without parser) took 3128.16ms. Allocated memory is still 167.8MB. Free memory was 127.0MB in the beginning and 110.6MB in the end (delta: 16.4MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2024-11-14 04:43:05,629 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:05,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1815.36ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 66.5MB in the end (delta: 60.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-14 04:43:05,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.42ms. Allocated memory is still 167.8MB. Free memory was 66.5MB in the beginning and 64.0MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:43:05,631 INFO L158 Benchmark]: Boogie Preprocessor took 43.50ms. Allocated memory is still 167.8MB. Free memory was 64.0MB in the beginning and 62.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:05,632 INFO L158 Benchmark]: RCFGBuilder took 601.28ms. Allocated memory is still 167.8MB. Free memory was 62.7MB in the beginning and 46.0MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:43:05,632 INFO L158 Benchmark]: TraceAbstraction took 566.30ms. Allocated memory is still 167.8MB. Free memory was 45.7MB in the beginning and 110.6MB in the end (delta: -64.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:05,633 INFO L158 Benchmark]: Witness Printer took 6.96ms. Allocated memory is still 167.8MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:05,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1815.36ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 66.5MB in the end (delta: 60.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.42ms. Allocated memory is still 167.8MB. Free memory was 66.5MB in the beginning and 64.0MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.50ms. Allocated memory is still 167.8MB. Free memory was 64.0MB in the beginning and 62.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 601.28ms. Allocated memory is still 167.8MB. Free memory was 62.7MB in the beginning and 46.0MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 566.30ms. Allocated memory is still 167.8MB. Free memory was 45.7MB in the beginning and 110.6MB in the end (delta: -64.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.96ms. Allocated memory is still 167.8MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of large string literal at line 1569, overapproximation of fgets at line 1555. 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); [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={14:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 04:43:05,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d659dc6f0ad2d9acd88210dfc5f7c881a249899e90930440f45f83a63aaec4f7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:43:08,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:43:08,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2024-11-14 04:43:08,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:43:08,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:43:09,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:43:09,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:43:09,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:43:09,043 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:43:09,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:43:09,043 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:43:09,043 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:43:09,043 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:43:09,043 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:43:09,043 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:43:09,044 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:43:09,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:43:09,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:43:09,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-14 04:43:09,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:43:09,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:43:09,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:43:09,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:43:09,050 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:43:09,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:43:09,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:43:09,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:43:09,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:43:09,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:43:09,051 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:43:09,051 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:43:09,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:43:09,051 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:43:09,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan 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 -> d659dc6f0ad2d9acd88210dfc5f7c881a249899e90930440f45f83a63aaec4f7 [2024-11-14 04:43:09,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:43:09,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:43:09,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:43:09,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:43:09,425 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:43:09,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_64_bad.i Unable to find full path for "g++" [2024-11-14 04:43:11,724 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:43:12,364 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:43:12,368 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_64_bad.i [2024-11-14 04:43:12,409 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data/6b9c669b4/fce7e99942e9489991761b52d5d7f932/FLAG136842f39 [2024-11-14 04:43:12,435 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/data/6b9c669b4/fce7e99942e9489991761b52d5d7f932 [2024-11-14 04:43:12,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:43:12,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:43:12,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:43:12,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:43:12,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:43:12,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:43:12" (1/1) ... [2024-11-14 04:43:12,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c48f27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:12, skipping insertion in model container [2024-11-14 04:43:12,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:43:12" (1/1) ... [2024-11-14 04:43:12,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:43:13,746 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-14 04:43:13,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:43:13,764 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:43:13,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:43:14,129 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:43:14,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14 WrapperNode [2024-11-14 04:43:14,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:43:14,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:43:14,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:43:14,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:43:14,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,224 INFO L138 Inliner]: procedures = 504, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 76 [2024-11-14 04:43:14,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:43:14,228 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:43:14,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:43:14,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:43:14,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:43:14,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:43:14,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:43:14,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:43:14,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (1/1) ... [2024-11-14 04:43:14,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:43:14,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:43:14,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:43:14,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:43:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-14 04:43:14,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-14 04:43:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 04:43:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:43:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:43:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:43:14,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:43:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-14 04:43:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 04:43:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-14 04:43:14,546 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:43:14,548 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:43:14,792 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-11-14 04:43:14,792 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:43:14,807 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:43:14,808 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:43:14,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:14 BoogieIcfgContainer [2024-11-14 04:43:14,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:43:14,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:43:14,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:43:14,820 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:43:14,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:43:12" (1/3) ... [2024-11-14 04:43:14,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429d80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:43:14, skipping insertion in model container [2024-11-14 04:43:14,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:14" (2/3) ... [2024-11-14 04:43:14,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429d80e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:43:14, skipping insertion in model container [2024-11-14 04:43:14,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:14" (3/3) ... [2024-11-14 04:43:14,825 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_64_bad.i [2024-11-14 04:43:14,842 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:43:14,844 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_predec_64_bad.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-14 04:43:14,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:43:14,926 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=FINITE_AUTOMATA, 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;@3422fc91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:43:14,926 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 04:43:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 04:43:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-14 04:43:14,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:14,941 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:43:14,942 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-14 04:43:14,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1415281768, now seen corresponding path program 1 times [2024-11-14 04:43:14,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:14,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242746860] [2024-11-14 04:43:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:14,964 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 [2024-11-14 04:43:14,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:14,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:43:14,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:43:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:43:15,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 04:43:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 04:43:15,418 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-14 04:43:15,420 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 04:43:15,423 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-14 04:43:15,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-14 04:43:15,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-14 04:43:15,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:43:15,636 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-14 04:43:15,675 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 04:43:15,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:43:15 BoogieIcfgContainer [2024-11-14 04:43:15,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 04:43:15,684 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 04:43:15,684 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 04:43:15,684 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 04:43:15,685 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:14" (3/4) ... [2024-11-14 04:43:15,691 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-14 04:43:15,692 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 04:43:15,694 INFO L158 Benchmark]: Toolchain (without parser) took 3253.82ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 75.4MB in the end (delta: 13.9MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2024-11-14 04:43:15,694 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:15,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1687.91ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 66.0MB in the end (delta: 23.1MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2024-11-14 04:43:15,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.49ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 63.4MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:15,695 INFO L158 Benchmark]: Boogie Preprocessor took 61.38ms. Allocated memory is still 117.4MB. Free memory was 63.4MB in the beginning and 61.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:43:15,696 INFO L158 Benchmark]: RCFGBuilder took 517.98ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 46.6MB in the end (delta: 14.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:43:15,699 INFO L158 Benchmark]: TraceAbstraction took 870.66ms. Allocated memory is still 117.4MB. Free memory was 45.6MB in the beginning and 75.4MB in the end (delta: -29.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:15,700 INFO L158 Benchmark]: Witness Printer took 8.19ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 75.4MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:43:15,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 117.4MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1687.91ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 66.0MB in the end (delta: 23.1MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.49ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 63.4MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.38ms. Allocated memory is still 117.4MB. Free memory was 63.4MB in the beginning and 61.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 517.98ms. Allocated memory is still 117.4MB. Free memory was 61.2MB in the beginning and 46.6MB in the end (delta: 14.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 870.66ms. Allocated memory is still 117.4MB. Free memory was 45.6MB in the beginning and 75.4MB in the end (delta: -29.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.19ms. Allocated memory is still 117.4MB. Free memory was 75.4MB in the beginning and 75.4MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of large string literal at line 1569, overapproximation of fgets at line 1555. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-14 04:43:15,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9092939-8869-45b5-bf73-286a58ab2c0e/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample