./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_03_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2 --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 43ebb2c998f418086c38d6a4f64d514199eb5b72aea96684517c4fdc30efe4ab --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:21:27,663 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:21:27,750 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Default.epf [2024-11-02 11:21:27,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:21:27,755 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:21:27,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:21:27,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:21:27,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:21:27,788 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:21:27,789 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:21:27,789 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:21:27,790 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:21:27,790 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:21:27,791 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:21:27,791 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:21:27,791 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:21:27,792 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:21:27,792 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:21:27,792 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:21:27,793 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:21:27,793 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:21:27,797 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:21:27,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:21:27,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:21:27,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:21:27,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:21:27,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:21:27,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:21:27,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:21:27,800 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:21:27,801 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 11:21:27,801 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:21:27,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:21:27,804 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:21:27,804 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:21:27,805 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:21:27,805 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:21:27,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:27,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:21:27,806 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:21:27,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:21:27,807 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:21:27,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:21:27,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:21:27,809 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:21:27,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:21:27,809 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43ebb2c998f418086c38d6a4f64d514199eb5b72aea96684517c4fdc30efe4ab [2024-11-02 11:21:28,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:21:28,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:21:28,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:21:28,100 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:21:28,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:21:28,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_03_bad.i Unable to find full path for "g++" [2024-11-02 11:21:30,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:21:30,556 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:21:30,558 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_03_bad.i [2024-11-02 11:21:30,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data/5812aca41/f150b377a357412bb3abb92186a472be/FLAG032850076 [2024-11-02 11:21:30,614 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data/5812aca41/f150b377a357412bb3abb92186a472be [2024-11-02 11:21:30,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:21:30,618 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:21:30,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:30,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:21:30,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:21:30,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:30" (1/1) ... [2024-11-02 11:21:30,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8167f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:30, skipping insertion in model container [2024-11-02 11:21:30,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:30" (1/1) ... [2024-11-02 11:21:30,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:21:31,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:31,796 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:21:31,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:32,150 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:21:32,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32 WrapperNode [2024-11-02 11:21:32,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:32,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:32,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:21:32,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:21:32,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,184 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,209 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-11-02 11:21:32,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:32,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:21:32,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:21:32,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:21:32,223 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,240 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:21:32,241 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:21:32,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:21:32,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:21:32,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (1/1) ... [2024-11-02 11:21:32,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:32,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:21:32,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:21:32,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:21:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-02 11:21:32,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-02 11:21:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:21:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:21:32,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:21:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:21:32,448 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:21:32,451 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:21:32,586 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-02 11:21:32,586 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:21:32,628 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:21:32,629 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 11:21:32,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:32 BoogieIcfgContainer [2024-11-02 11:21:32,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:21:32,632 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:21:32,633 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:21:32,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:21:32,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:21:30" (1/3) ... [2024-11-02 11:21:32,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622d9833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:32, skipping insertion in model container [2024-11-02 11:21:32,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:32" (2/3) ... [2024-11-02 11:21:32,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622d9833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:32, skipping insertion in model container [2024-11-02 11:21:32,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:32" (3/3) ... [2024-11-02 11:21:32,643 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_03_bad.i [2024-11-02 11:21:32,665 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:21:32,665 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 11:21:32,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:21:32,732 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;@70845eeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:21:32,732 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 11:21:32,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-11-02 11:21:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 11:21:32,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:32,745 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:21:32,746 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 11:21:32,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:32,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1990696737, now seen corresponding path program 1 times [2024-11-02 11:21:32,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:32,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796888788] [2024-11-02 11:21:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:21:32,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:21:32,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796888788] [2024-11-02 11:21:32,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796888788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:32,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:32,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:21:32,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009484882] [2024-11-02 11:21:32,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:32,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 11:21:32,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:21:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 11:21:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 11:21:33,021 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:21:33,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:33,050 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2024-11-02 11:21:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 11:21:33,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2024-11-02 11:21:33,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:33,059 INFO L225 Difference]: With dead ends: 28 [2024-11-02 11:21:33,059 INFO L226 Difference]: Without dead ends: 14 [2024-11-02 11:21:33,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 11:21:33,066 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:33,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:21:33,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-02 11:21:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-02 11:21:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 11:21:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-11-02 11:21:33,103 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2024-11-02 11:21:33,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:33,105 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-11-02 11:21:33,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:21:33,106 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-11-02 11:21:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 11:21:33,108 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:33,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:21:33,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:21:33,109 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 11:21:33,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:33,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1798779078, now seen corresponding path program 1 times [2024-11-02 11:21:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:21:33,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423401450] [2024-11-02 11:21:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:33,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:21:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:21:33,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 11:21:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:21:33,255 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 11:21:33,255 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 11:21:33,257 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-02 11:21:33,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-02 11:21:33,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:21:33,263 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-02 11:21:33,303 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 11:21:33,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:21:33 BoogieIcfgContainer [2024-11-02 11:21:33,312 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 11:21:33,313 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 11:21:33,313 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 11:21:33,313 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 11:21:33,314 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:32" (3/4) ... [2024-11-02 11:21:33,321 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 11:21:33,323 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 11:21:33,326 INFO L158 Benchmark]: Toolchain (without parser) took 2706.28ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 110.4MB in the beginning and 153.2MB in the end (delta: -42.8MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2024-11-02 11:21:33,327 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:21:33,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1532.22ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 110.4MB in the beginning and 139.1MB in the end (delta: -28.7MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2024-11-02 11:21:33,328 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.37ms. Allocated memory is still 188.7MB. Free memory was 139.1MB in the beginning and 135.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 11:21:33,329 INFO L158 Benchmark]: Boogie Preprocessor took 30.07ms. Allocated memory is still 188.7MB. Free memory was 135.9MB in the beginning and 134.9MB in the end (delta: 991.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:21:33,330 INFO L158 Benchmark]: RCFGBuilder took 388.75ms. Allocated memory is still 188.7MB. Free memory was 134.9MB in the beginning and 119.2MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-02 11:21:33,331 INFO L158 Benchmark]: TraceAbstraction took 679.63ms. Allocated memory is still 188.7MB. Free memory was 119.2MB in the beginning and 153.2MB in the end (delta: -34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-02 11:21:33,331 INFO L158 Benchmark]: Witness Printer took 11.02ms. Allocated memory is still 188.7MB. Free memory is still 153.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:21:33,338 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 109.1MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1532.22ms. Allocated memory was 144.7MB in the beginning and 188.7MB in the end (delta: 44.0MB). Free memory was 110.4MB in the beginning and 139.1MB in the end (delta: -28.7MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.37ms. Allocated memory is still 188.7MB. Free memory was 139.1MB in the beginning and 135.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.07ms. Allocated memory is still 188.7MB. Free memory was 135.9MB in the beginning and 134.9MB in the end (delta: 991.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 388.75ms. Allocated memory is still 188.7MB. Free memory was 134.9MB in the beginning and 119.2MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 679.63ms. Allocated memory is still 188.7MB. Free memory was 119.2MB in the beginning and 153.2MB in the end (delta: -34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 11.02ms. Allocated memory is still 188.7MB. Free memory is still 153.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1578, overapproximation of fgets at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_03_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1569] --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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, 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, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-02 11:21:33,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_03_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2 --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 43ebb2c998f418086c38d6a4f64d514199eb5b72aea96684517c4fdc30efe4ab --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:21:35,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:21:35,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2024-11-02 11:21:35,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:21:35,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:21:36,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:21:36,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:21:36,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:21:36,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:21:36,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:21:36,020 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:21:36,020 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:21:36,021 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:21:36,021 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:21:36,022 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:21:36,022 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:21:36,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:21:36,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 11:21:36,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:21:36,024 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 11:21:36,024 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:21:36,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 11:21:36,025 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 11:21:36,025 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 11:21:36,026 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:21:36,026 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-02 11:21:36,026 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 11:21:36,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:21:36,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 11:21:36,027 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:21:36,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:21:36,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 11:21:36,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:21:36,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:21:36,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:36,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:21:36,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:21:36,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 11:21:36,031 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 11:21:36,032 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 11:21:36,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:21:36,034 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:21:36,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:21:36,034 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43ebb2c998f418086c38d6a4f64d514199eb5b72aea96684517c4fdc30efe4ab [2024-11-02 11:21:36,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:21:36,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:21:36,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:21:36,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:21:36,479 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:21:36,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_03_bad.i Unable to find full path for "g++" [2024-11-02 11:21:38,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:21:39,161 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:21:39,162 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_03_bad.i [2024-11-02 11:21:39,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data/3e535ff3e/ea4617345d5f4b378095c4c81814fbcf/FLAG53883a980 [2024-11-02 11:21:39,660 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/data/3e535ff3e/ea4617345d5f4b378095c4c81814fbcf [2024-11-02 11:21:39,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:21:39,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:21:39,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:39,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:21:39,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:21:39,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:39" (1/1) ... [2024-11-02 11:21:39,674 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b90880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:39, skipping insertion in model container [2024-11-02 11:21:39,674 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:21:39" (1/1) ... [2024-11-02 11:21:39,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:21:40,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:40,778 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:21:40,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:21:41,128 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:21:41,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41 WrapperNode [2024-11-02 11:21:41,129 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:21:41,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:41,131 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:21:41,131 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:21:41,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,197 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-11-02 11:21:41,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:21:41,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:21:41,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:21:41,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:21:41,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,221 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:21:41,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:21:41,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:21:41,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:21:41,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (1/1) ... [2024-11-02 11:21:41,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:21:41,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:21:41,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:21:41,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:21:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-02 11:21:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-02 11:21:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 11:21:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:21:41,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:21:41,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:21:41,527 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:21:41,528 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:21:41,742 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-02 11:21:41,742 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:21:41,759 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:21:41,759 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 11:21:41,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:41 BoogieIcfgContainer [2024-11-02 11:21:41,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:21:41,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:21:41,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:21:41,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:21:41,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:21:39" (1/3) ... [2024-11-02 11:21:41,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a2c61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:41, skipping insertion in model container [2024-11-02 11:21:41,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:21:41" (2/3) ... [2024-11-02 11:21:41,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a2c61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:21:41, skipping insertion in model container [2024-11-02 11:21:41,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:41" (3/3) ... [2024-11-02 11:21:41,774 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_03_bad.i [2024-11-02 11:21:41,794 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:21:41,794 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 11:21:41,880 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:21:41,888 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;@5123b046, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:21:41,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 11:21:41,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-02 11:21:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-02 11:21:41,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:41,903 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:21:41,903 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 11:21:41,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1242021052, now seen corresponding path program 1 times [2024-11-02 11:21:41,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:21:41,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033266489] [2024-11-02 11:21:41,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:41,925 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 [2024-11-02 11:21:41,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:21:41,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 11:21:41,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 11:21:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:21:42,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 11:21:42,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 11:21:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 11:21:42,130 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 11:21:42,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 11:21:42,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033266489] [2024-11-02 11:21:42,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033266489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:21:42,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:21:42,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 11:21:42,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910326173] [2024-11-02 11:21:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:21:42,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 11:21:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 11:21:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 11:21:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 11:21:42,173 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:21:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:21:42,193 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2024-11-02 11:21:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 11:21:42,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-02 11:21:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:21:42,203 INFO L225 Difference]: With dead ends: 38 [2024-11-02 11:21:42,204 INFO L226 Difference]: Without dead ends: 15 [2024-11-02 11:21:42,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 11:21:42,212 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 11:21:42,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 11:21:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-02 11:21:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-02 11:21:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 11:21:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-02 11:21:42,270 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2024-11-02 11:21:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:21:42,273 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-02 11:21:42,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 11:21:42,273 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-02 11:21:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-02 11:21:42,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:21:42,275 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:21:42,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 11:21:42,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 11:21:42,478 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-02 11:21:42,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:21:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash -419015775, now seen corresponding path program 1 times [2024-11-02 11:21:42,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 11:21:42,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940047385] [2024-11-02 11:21:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:21:42,481 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 [2024-11-02 11:21:42,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 11:21:42,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 11:21:42,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 11:21:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:21:42,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 11:21:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 11:21:42,678 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-02 11:21:42,678 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 11:21:42,680 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-02 11:21:42,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-02 11:21:42,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 11:21:42,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 11:21:42,886 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-02 11:21:42,914 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 11:21:42,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 11:21:42 BoogieIcfgContainer [2024-11-02 11:21:42,922 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 11:21:42,923 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 11:21:42,924 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 11:21:42,925 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 11:21:42,925 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:21:41" (3/4) ... [2024-11-02 11:21:42,928 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 11:21:42,929 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 11:21:42,930 INFO L158 Benchmark]: Toolchain (without parser) took 3265.98ms. Allocated memory was 67.1MB in the beginning and 104.9MB in the end (delta: 37.7MB). Free memory was 39.4MB in the beginning and 61.4MB in the end (delta: -22.0MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2024-11-02 11:21:42,931 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 67.1MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:21:42,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1463.97ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 39.2MB in the beginning and 46.7MB in the end (delta: -7.5MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2024-11-02 11:21:42,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.33ms. Allocated memory is still 86.0MB. Free memory was 46.7MB in the beginning and 43.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-02 11:21:42,937 INFO L158 Benchmark]: Boogie Preprocessor took 32.53ms. Allocated memory is still 86.0MB. Free memory was 43.8MB in the beginning and 41.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 11:21:42,938 INFO L158 Benchmark]: RCFGBuilder took 529.90ms. Allocated memory is still 86.0MB. Free memory was 41.7MB in the beginning and 50.7MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-02 11:21:42,939 INFO L158 Benchmark]: TraceAbstraction took 1157.39ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.3MB in the beginning and 61.4MB in the end (delta: -11.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-11-02 11:21:42,939 INFO L158 Benchmark]: Witness Printer took 7.05ms. Allocated memory is still 104.9MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 11:21:42,942 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 67.1MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1463.97ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 39.2MB in the beginning and 46.7MB in the end (delta: -7.5MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.33ms. Allocated memory is still 86.0MB. Free memory was 46.7MB in the beginning and 43.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.53ms. Allocated memory is still 86.0MB. Free memory was 43.8MB in the beginning and 41.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 529.90ms. Allocated memory is still 86.0MB. Free memory was 41.7MB in the beginning and 50.7MB in the end (delta: -9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1157.39ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.3MB in the beginning and 61.4MB in the end (delta: -11.1MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Witness Printer took 7.05ms. Allocated memory is still 104.9MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1578, overapproximation of fgets at line 1556. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_predec_03_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1569] --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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, 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, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 26 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-02 11:21:42,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_348417ea-cab5-4d0c-a2b6-36d5d205e12e/bin/utaipan-verify-DbMuA5NWw2/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