./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:50:26,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:50:26,412 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-03 03:50:26,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 03:50:26,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 03:50:26,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:50:26,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 03:50:26,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 03:50:26,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:50:26,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:50:26,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:50:26,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 03:50:26,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 03:50:26,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:50:26,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 03:50:26,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:50:26,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 03:50:26,448 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 03:50:26,449 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 03:50:26,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 03:50:26,450 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:50:26,450 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:50:26,451 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:50:26,451 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:50:26,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:50:26,452 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:50:26,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:50:26,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:50:26,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 03:50:26,454 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 03:50:26,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 03:50:26,454 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 03:50:26,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2023-12-03 03:50:26,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:50:26,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:50:26,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:50:26,698 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:50:26,698 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:50:26,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-12-03 03:50:29,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:50:29,777 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:50:29,778 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-12-03 03:50:29,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data/fe5a90d57/e032d9ef65ad4bb6a5b8f39dd0561b0a/FLAGa14315abc [2023-12-03 03:50:29,815 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data/fe5a90d57/e032d9ef65ad4bb6a5b8f39dd0561b0a [2023-12-03 03:50:29,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:50:29,819 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:50:29,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:50:29,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:50:29,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:50:29,826 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:50:29" (1/1) ... [2023-12-03 03:50:29,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d5dbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:29, skipping insertion in model container [2023-12-03 03:50:29,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:50:29" (1/1) ... [2023-12-03 03:50:29,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:50:30,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:50:30,650 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:50:30,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:50:30,913 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:30,914 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:30,914 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:30,914 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:30,914 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:30,922 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:50:30,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30 WrapperNode [2023-12-03 03:50:30,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:50:30,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:50:30,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:50:30,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:50:30,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,978 INFO L138 Inliner]: procedures = 500, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2023-12-03 03:50:30,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:50:30,979 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:50:30,979 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:50:30,979 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:50:30,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,990 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:30,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:31,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:31,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:50:31,004 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:50:31,004 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:50:31,005 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:50:31,005 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:30" (1/1) ... [2023-12-03 03:50:31,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:50:31,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:50:31,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:50:31,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:50:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-03 03:50:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-03 03:50:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-03 03:50:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 03:50:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-03 03:50:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-03 03:50:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:50:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:50:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:50:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 03:50:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-03 03:50:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-03 03:50:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 03:50:31,194 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:50:31,196 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:50:31,309 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:50:31,348 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:50:31,348 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 03:50:31,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:50:31 BoogieIcfgContainer [2023-12-03 03:50:31,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:50:31,351 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:50:31,351 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:50:31,361 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:50:31,362 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:50:31" (1/1) ... [2023-12-03 03:50:31,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:50:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:50:31,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-12-03 03:50:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-03 03:50:31,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-03 03:50:31,426 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:50:31,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 03:50:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:31,569 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 03:50:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:31,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 03:50:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:31,738 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-03 03:50:31,760 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-12-03 03:50:31,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 03:50:31 ImpRootNode [2023-12-03 03:50:31,766 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 03:50:31,766 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 03:50:31,766 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 03:50:31,767 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 03:50:31,767 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:50:31" (3/4) ... [2023-12-03 03:50:31,769 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 03:50:31,770 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 03:50:31,771 INFO L158 Benchmark]: Toolchain (without parser) took 1951.93ms. Allocated memory is still 148.9MB. Free memory was 106.6MB in the beginning and 58.2MB in the end (delta: 48.4MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2023-12-03 03:50:31,772 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory was 67.0MB in the beginning and 66.9MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:50:31,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1102.46ms. Allocated memory is still 148.9MB. Free memory was 106.6MB in the beginning and 101.4MB in the end (delta: 5.2MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2023-12-03 03:50:31,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.70ms. Allocated memory is still 148.9MB. Free memory was 101.4MB in the beginning and 98.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 03:50:31,774 INFO L158 Benchmark]: Boogie Preprocessor took 24.56ms. Allocated memory is still 148.9MB. Free memory was 98.0MB in the beginning and 96.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:50:31,775 INFO L158 Benchmark]: RCFGBuilder took 345.61ms. Allocated memory is still 148.9MB. Free memory was 96.7MB in the beginning and 80.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-03 03:50:31,775 INFO L158 Benchmark]: CodeCheck took 415.06ms. Allocated memory is still 148.9MB. Free memory was 80.4MB in the beginning and 58.2MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-03 03:50:31,776 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 148.9MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:50:31,779 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s 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, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1578]: 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. 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, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=57, argc=57, argv={58:59}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={32290:0}, dataPtr={32290:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory was 67.0MB in the beginning and 66.9MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1102.46ms. Allocated memory is still 148.9MB. Free memory was 106.6MB in the beginning and 101.4MB in the end (delta: 5.2MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.70ms. Allocated memory is still 148.9MB. Free memory was 101.4MB in the beginning and 98.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.56ms. Allocated memory is still 148.9MB. Free memory was 98.0MB in the beginning and 96.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 345.61ms. Allocated memory is still 148.9MB. Free memory was 96.7MB in the beginning and 80.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 415.06ms. Allocated memory is still 148.9MB. Free memory was 80.4MB in the beginning and 58.2MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 148.9MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-03 03:50:31,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 03:50:33,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 03:50:33,901 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-12-03 03:50:33,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 03:50:33,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 03:50:33,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 03:50:33,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 03:50:33,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 03:50:33,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 03:50:33,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 03:50:33,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 03:50:33,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 03:50:33,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 03:50:33,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 03:50:33,939 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-03 03:50:33,940 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-03 03:50:33,940 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 03:50:33,941 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-03 03:50:33,941 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 03:50:33,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 03:50:33,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 03:50:33,946 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 03:50:33,946 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 03:50:33,947 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 03:50:33,947 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 03:50:33,948 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-03 03:50:33,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 03:50:33,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:50:33,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 03:50:33,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 03:50:33,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 03:50:33,950 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-03 03:50:33,950 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 03:50:33,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 03:50:33,951 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-03 03:50:33,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-03 03:50:33,951 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_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2023-12-03 03:50:34,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 03:50:34,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 03:50:34,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 03:50:34,266 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 03:50:34,267 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 03:50:34,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-12-03 03:50:37,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 03:50:37,343 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 03:50:37,344 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-12-03 03:50:37,368 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data/c3eafc13c/f7efafce3b6744bda5722da34f089270/FLAGa1a0d5235 [2023-12-03 03:50:37,383 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/data/c3eafc13c/f7efafce3b6744bda5722da34f089270 [2023-12-03 03:50:37,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 03:50:37,387 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 03:50:37,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 03:50:37,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 03:50:37,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 03:50:37,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:50:37" (1/1) ... [2023-12-03 03:50:37,395 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11064638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:37, skipping insertion in model container [2023-12-03 03:50:37,395 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 03:50:37" (1/1) ... [2023-12-03 03:50:37,464 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 03:50:38,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:50:38,549 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 03:50:38,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 03:50:38,773 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:38,774 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:38,774 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:38,774 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:38,774 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 03:50:38,782 INFO L206 MainTranslator]: Completed translation [2023-12-03 03:50:38,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38 WrapperNode [2023-12-03 03:50:38,782 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 03:50:38,783 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 03:50:38,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 03:50:38,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 03:50:38,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,847 INFO L138 Inliner]: procedures = 505, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2023-12-03 03:50:38,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 03:50:38,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 03:50:38,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 03:50:38,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 03:50:38,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 03:50:38,887 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 03:50:38,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 03:50:38,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 03:50:38,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 03:50:38" (1/1) ... [2023-12-03 03:50:38,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 03:50:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 03:50:38,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 03:50:38,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 03:50:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-03 03:50:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-03 03:50:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-03 03:50:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 03:50:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-03 03:50:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 03:50:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 03:50:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 03:50:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-03 03:50:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 03:50:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-03 03:50:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-03 03:50:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-03 03:50:39,126 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 03:50:39,129 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 03:50:39,308 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 03:50:39,357 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 03:50:39,357 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 03:50:39,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:50:39 BoogieIcfgContainer [2023-12-03 03:50:39,359 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 03:50:39,360 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 03:50:39,360 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 03:50:39,369 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 03:50:39,370 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:50:39" (1/1) ... [2023-12-03 03:50:39,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 03:50:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 03:50:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-12-03 03:50:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-03 03:50:39,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-03 03:50:39,430 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 03:50:39,430 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 03:50:39,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 03:50:39,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 03:50:39,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-03 03:50:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:39,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 03:50:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:40,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:40,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 03:50:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 03:50:40,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-03 03:50:40,378 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-03 03:50:40,402 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-12-03 03:50:40,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 03:50:40 ImpRootNode [2023-12-03 03:50:40,408 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 03:50:40,408 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 03:50:40,408 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 03:50:40,409 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 03:50:40,409 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 03:50:39" (3/4) ... [2023-12-03 03:50:40,411 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 03:50:40,413 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 03:50:40,414 INFO L158 Benchmark]: Toolchain (without parser) took 3026.57ms. Allocated memory was 92.3MB in the beginning and 136.3MB in the end (delta: 44.0MB). Free memory was 65.1MB in the beginning and 101.6MB in the end (delta: -36.6MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2023-12-03 03:50:40,415 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 33.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:50:40,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1394.20ms. Allocated memory was 92.3MB in the beginning and 136.3MB in the end (delta: 44.0MB). Free memory was 65.1MB in the beginning and 103.6MB in the end (delta: -38.6MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. [2023-12-03 03:50:40,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.22ms. Allocated memory is still 136.3MB. Free memory was 103.6MB in the beginning and 100.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 03:50:40,417 INFO L158 Benchmark]: Boogie Preprocessor took 38.59ms. Allocated memory is still 136.3MB. Free memory was 100.8MB in the beginning and 98.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 03:50:40,418 INFO L158 Benchmark]: RCFGBuilder took 471.68ms. Allocated memory is still 136.3MB. Free memory was 98.7MB in the beginning and 79.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-03 03:50:40,418 INFO L158 Benchmark]: CodeCheck took 1047.72ms. Allocated memory is still 136.3MB. Free memory was 79.9MB in the beginning and 101.6MB in the end (delta: -21.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:50:40,419 INFO L158 Benchmark]: Witness Printer took 4.61ms. Allocated memory is still 136.3MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 03:50:40,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s 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, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1578]: 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. 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, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 92.3MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 33.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1394.20ms. Allocated memory was 92.3MB in the beginning and 136.3MB in the end (delta: 44.0MB). Free memory was 65.1MB in the beginning and 103.6MB in the end (delta: -38.6MB). Peak memory consumption was 43.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.22ms. Allocated memory is still 136.3MB. Free memory was 103.6MB in the beginning and 100.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.59ms. Allocated memory is still 136.3MB. Free memory was 100.8MB in the beginning and 98.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.68ms. Allocated memory is still 136.3MB. Free memory was 98.7MB in the beginning and 79.9MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1047.72ms. Allocated memory is still 136.3MB. Free memory was 79.9MB in the beginning and 101.6MB in the end (delta: -21.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.61ms. Allocated memory is still 136.3MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet100 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-03 03:50:40,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9c0dc4-40e2-40c1-a4d6-aa97153880bc/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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