./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_54_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC --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 f34413006439766a3957dd65c07b6ee4aec896235e77741a9a672041c503d263 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:25:07,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:25:07,265 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:25:07,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:25:07,275 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:25:07,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:25:07,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:25:07,318 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:25:07,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:25:07,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:25:07,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:25:07,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:25:07,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:25:07,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:25:07,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:25:07,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:25:07,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:25:07,330 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:25:07,330 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:25:07,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:25:07,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:25:07,332 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:25:07,332 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:25:07,334 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:25:07,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:25:07,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:25:07,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:25:07,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:25:07,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:25:07,337 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:25:07,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:25:07,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:25:07,339 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_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f34413006439766a3957dd65c07b6ee4aec896235e77741a9a672041c503d263 [2023-11-23 20:25:07,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:25:07,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:25:07,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:25:07,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:25:07,714 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:25:07,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_54_bad.i [2023-11-23 20:25:10,962 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:25:11,372 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:25:11,373 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_54_bad.i [2023-11-23 20:25:11,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data/41cac3bd4/603e9246da724ab0997328aded60f99d/FLAGbce56c5a6 [2023-11-23 20:25:11,415 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data/41cac3bd4/603e9246da724ab0997328aded60f99d [2023-11-23 20:25:11,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:25:11,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:25:11,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:25:11,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:25:11,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:25:11,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:25:11" (1/1) ... [2023-11-23 20:25:11,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa4d5d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:11, skipping insertion in model container [2023-11-23 20:25:11,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:25:11" (1/1) ... [2023-11-23 20:25:11,511 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:25:11,950 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:25:12,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:25:12,557 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:25:12,580 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:25:12,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:25:12,898 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:12,898 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:12,898 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:12,899 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:12,899 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:12,899 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:12,907 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:25:12,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12 WrapperNode [2023-11-23 20:25:12,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:25:12,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:25:12,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:25:12,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:25:12,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:12,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,009 INFO L138 Inliner]: procedures = 504, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 62 [2023-11-23 20:25:13,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:25:13,010 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:25:13,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:25:13,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:25:13,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,066 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:25:13,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:25:13,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:25:13,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:25:13,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:12" (1/1) ... [2023-11-23 20:25:13,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:25:13,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:25:13,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:25:13,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:25:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:25:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:25:13,153 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:25:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:25:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:25:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:25:13,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:25:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:25:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:25:13,335 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:25:13,338 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:25:13,482 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:25:13,528 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:25:13,528 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:25:13,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:13 BoogieIcfgContainer [2023-11-23 20:25:13,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:25:13,531 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:25:13,531 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:25:13,543 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:25:13,543 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:13" (1/1) ... [2023-11-23 20:25:13,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:25:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:25:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:25:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:25:13,620 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:13,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:25:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:13,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:25:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:13,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:25:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:13,948 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:25:13,975 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated [2023-11-23 20:25:13,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:25:13 ImpRootNode [2023-11-23 20:25:13,983 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:25:13,986 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:25:13,986 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:25:13,987 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:25:13,987 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:13" (3/4) ... [2023-11-23 20:25:13,992 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:25:13,993 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:25:13,994 INFO L158 Benchmark]: Toolchain (without parser) took 2573.84ms. Allocated memory is still 163.6MB. Free memory was 116.1MB in the beginning and 117.7MB in the end (delta: -1.6MB). Peak memory consumption was 12.9kB. Max. memory is 16.1GB. [2023-11-23 20:25:13,995 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:25:13,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1486.73ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 96.8MB in the end (delta: 18.8MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-11-23 20:25:13,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.46ms. Allocated memory is still 163.6MB. Free memory was 96.8MB in the beginning and 93.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:25:13,998 INFO L158 Benchmark]: Boogie Preprocessor took 70.46ms. Allocated memory is still 163.6MB. Free memory was 93.4MB in the beginning and 91.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:25:13,999 INFO L158 Benchmark]: RCFGBuilder took 448.50ms. Allocated memory is still 163.6MB. Free memory was 91.9MB in the beginning and 76.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:25:14,000 INFO L158 Benchmark]: CodeCheck took 451.56ms. Allocated memory is still 163.6MB. Free memory was 76.6MB in the beginning and 117.8MB in the end (delta: -41.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:25:14,002 INFO L158 Benchmark]: Witness Printer took 7.13ms. Allocated memory is still 163.6MB. Free memory was 117.8MB in the beginning and 117.7MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:25:14,011 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, 15 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: 1592]: 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. 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)=18, argc=18, argv={13:29}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_54_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_postdec_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_postdec_54e_badSink(data) [L1592] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, 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 0.33ms. Allocated memory is still 121.6MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1486.73ms. Allocated memory is still 163.6MB. Free memory was 115.6MB in the beginning and 96.8MB in the end (delta: 18.8MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.46ms. Allocated memory is still 163.6MB. Free memory was 96.8MB in the beginning and 93.4MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.46ms. Allocated memory is still 163.6MB. Free memory was 93.4MB in the beginning and 91.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.50ms. Allocated memory is still 163.6MB. Free memory was 91.9MB in the beginning and 76.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 451.56ms. Allocated memory is still 163.6MB. Free memory was 76.6MB in the beginning and 117.8MB in the end (delta: -41.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.13ms. Allocated memory is still 163.6MB. Free memory was 117.8MB in the beginning and 117.7MB in the end (delta: 2.7kB). 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: IdentifierExpression #t~post101 could not be translated - 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 [2023-11-23 20:25:14,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/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 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_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC --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 f34413006439766a3957dd65c07b6ee4aec896235e77741a9a672041c503d263 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:25:16,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:25:16,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:25:16,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:25:16,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:25:16,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:25:16,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:25:16,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:25:16,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:25:16,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:25:16,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:25:16,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:25:16,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:25:16,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:25:16,954 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:25:16,954 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:25:16,955 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:25:16,955 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:25:16,956 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:25:16,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:25:16,956 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:25:16,957 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:25:16,958 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:25:16,958 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:25:16,959 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:25:16,959 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:25:16,960 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:25:16,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:25:16,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:25:16,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:25:16,962 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:25:16,963 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:25:16,963 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:25:16,963 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:25:16,964 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:25:16,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:25:16,964 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_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f34413006439766a3957dd65c07b6ee4aec896235e77741a9a672041c503d263 [2023-11-23 20:25:17,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:25:17,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:25:17,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:25:17,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:25:17,473 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:25:17,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_54_bad.i [2023-11-23 20:25:20,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:25:21,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:25:21,216 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_54_bad.i [2023-11-23 20:25:21,241 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data/fd1aded4a/2a66712b39a848559f274bb250e2a9b8/FLAGec1171b8c [2023-11-23 20:25:21,257 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/data/fd1aded4a/2a66712b39a848559f274bb250e2a9b8 [2023-11-23 20:25:21,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:25:21,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:25:21,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:25:21,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:25:21,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:25:21,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:25:21" (1/1) ... [2023-11-23 20:25:21,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@219125d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:21, skipping insertion in model container [2023-11-23 20:25:21,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:25:21" (1/1) ... [2023-11-23 20:25:21,347 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:25:21,791 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:25:22,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:25:22,362 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:25:22,397 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:25:22,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:25:22,802 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:22,802 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:22,802 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:22,803 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:22,803 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:22,803 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:25:22,812 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:25:22,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22 WrapperNode [2023-11-23 20:25:22,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:25:22,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:25:22,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:25:22,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:25:22,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,908 INFO L138 Inliner]: procedures = 509, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 61 [2023-11-23 20:25:22,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:25:22,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:25:22,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:25:22,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:25:22,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:25:22,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:25:22,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:25:22,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:25:22,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:25:22" (1/1) ... [2023-11-23 20:25:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:25:22,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:25:23,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:25:23,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:25:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:25:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:25:23,077 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:25:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:25:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:25:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:25:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:25:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:25:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:25:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:25:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:25:23,261 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:25:23,264 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:25:23,454 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:25:23,557 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:25:23,561 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:25:23,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:23 BoogieIcfgContainer [2023-11-23 20:25:23,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:25:23,575 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:25:23,575 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:25:23,587 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:25:23,587 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:23" (1/1) ... [2023-11-23 20:25:23,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:25:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:25:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:25:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:25:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:25:23,701 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:25:23,702 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:25:23,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:25:23,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:25:23,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:25:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:23,999 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:25:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:24,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:25:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:25:24,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:25:24,348 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:25:24,378 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated [2023-11-23 20:25:24,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:25:24 ImpRootNode [2023-11-23 20:25:24,383 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:25:24,383 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:25:24,383 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:25:24,384 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:25:24,384 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:25:23" (3/4) ... [2023-11-23 20:25:24,386 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:25:24,388 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:25:24,389 INFO L158 Benchmark]: Toolchain (without parser) took 3127.39ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 39.4MB in the beginning and 37.5MB in the end (delta: 1.8MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2023-11-23 20:25:24,396 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 67.1MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:25:24,397 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1551.69ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 39.2MB in the beginning and 55.1MB in the end (delta: -15.9MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2023-11-23 20:25:24,398 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.07ms. Allocated memory is still 92.3MB. Free memory was 55.1MB in the beginning and 51.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:25:24,399 INFO L158 Benchmark]: Boogie Preprocessor took 53.33ms. Allocated memory is still 92.3MB. Free memory was 51.8MB in the beginning and 50.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:25:24,399 INFO L158 Benchmark]: RCFGBuilder took 610.86ms. Allocated memory is still 92.3MB. Free memory was 49.7MB in the beginning and 55.8MB in the end (delta: -6.1MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-11-23 20:25:24,400 INFO L158 Benchmark]: CodeCheck took 807.66ms. Allocated memory is still 92.3MB. Free memory was 55.8MB in the beginning and 38.0MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:25:24,401 INFO L158 Benchmark]: Witness Printer took 4.72ms. Allocated memory is still 92.3MB. Free memory was 38.0MB in the beginning and 37.5MB in the end (delta: 481.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:25:24,404 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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: 1592]: 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. 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_postdec_54_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_postdec_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_postdec_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_postdec_54e_badSink(data) [L1592] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, 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 0.73ms. Allocated memory is still 67.1MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1551.69ms. Allocated memory was 67.1MB in the beginning and 92.3MB in the end (delta: 25.2MB). Free memory was 39.2MB in the beginning and 55.1MB in the end (delta: -15.9MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.07ms. Allocated memory is still 92.3MB. Free memory was 55.1MB in the beginning and 51.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.33ms. Allocated memory is still 92.3MB. Free memory was 51.8MB in the beginning and 50.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 610.86ms. Allocated memory is still 92.3MB. Free memory was 49.7MB in the beginning and 55.8MB in the end (delta: -6.1MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * CodeCheck took 807.66ms. Allocated memory is still 92.3MB. Free memory was 55.8MB in the beginning and 38.0MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.72ms. Allocated memory is still 92.3MB. Free memory was 38.0MB in the beginning and 37.5MB in the end (delta: 481.2kB). 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: IdentifierExpression #t~post99 could not be translated - 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 [2023-11-23 20:25:24,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_192fb865-1792-48ac-8d14-bf6b5d2b5c86/bin/ukojak-verify-1t5iHCbJaC/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample