./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_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_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi --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 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:56:50,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:56:50,482 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-24 22:56:50,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:56:50,489 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 22:56:50,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:56:50,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:56:50,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:56:50,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:56:50,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:56:50,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:56:50,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:56:50,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:56:50,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:56:50,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:56:50,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:56:50,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:56:50,528 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 22:56:50,529 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:56:50,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:56:50,530 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:56:50,531 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:56:50,532 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:56:50,532 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:56:50,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:56:50,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:50,534 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:56:50,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:56:50,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:56:50,536 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 22:56:50,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:56:50,537 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:56:50,537 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_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 [2023-11-24 22:56:50,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:56:50,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:56:50,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:56:50,862 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:56:50,863 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:56:50,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2023-11-24 22:56:54,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:56:54,485 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:56:54,486 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2023-11-24 22:56:54,514 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data/9474f9f06/f862de2709874a9b854e58e2c7609bd0/FLAGc87f0121d [2023-11-24 22:56:54,530 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data/9474f9f06/f862de2709874a9b854e58e2c7609bd0 [2023-11-24 22:56:54,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:56:54,534 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:56:54,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:54,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:56:54,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:56:54,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:54" (1/1) ... [2023-11-24 22:56:54,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3392d3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:54, skipping insertion in model container [2023-11-24 22:56:54,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:56:54" (1/1) ... [2023-11-24 22:56:54,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:56:55,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:55,766 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:56:55,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:56:56,044 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:56,045 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:56,045 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:56,045 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:56,045 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:56,045 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:56:56,053 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:56:56,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56 WrapperNode [2023-11-24 22:56:56,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:56:56,056 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:56,056 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:56:56,056 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:56:56,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,140 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 66 [2023-11-24 22:56:56,141 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:56:56,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:56:56,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:56:56,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:56:56,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,185 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,201 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:56:56,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:56:56,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:56:56,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:56:56,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:56:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:56:56,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:56:56,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:56:56,302 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 22:56:56,303 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 22:56:56,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 22:56:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:56:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 22:56:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:56:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:56:56,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:56:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:56:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 22:56:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 22:56:56,478 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:56:56,481 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:56:56,650 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:56:56,722 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:56:56,722 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:56:56,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:56 BoogieIcfgContainer [2023-11-24 22:56:56,724 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:56:56,725 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:56:56,725 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:56:56,736 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:56:56,737 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:56" (1/1) ... [2023-11-24 22:56:56,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:56:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:56:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-11-24 22:56:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-24 22:56:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 22:56:56,810 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:56:56,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:56:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:57,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:56:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:57,223 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:56:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:56:57,262 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-24 22:56:57,299 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet103 [2023-11-24 22:56:57,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:56:57 ImpRootNode [2023-11-24 22:56:57,311 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:56:57,314 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:56:57,314 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:56:57,315 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:56:57,315 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:56:56" (3/4) ... [2023-11-24 22:56:57,324 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 22:56:57,325 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:56:57,326 INFO L158 Benchmark]: Toolchain (without parser) took 2791.53ms. Allocated memory is still 197.1MB. Free memory was 155.0MB in the beginning and 100.3MB in the end (delta: 54.6MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2023-11-24 22:56:57,326 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 134.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:57,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1518.74ms. Allocated memory is still 197.1MB. Free memory was 155.0MB in the beginning and 140.2MB in the end (delta: 14.8MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2023-11-24 22:56:57,328 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.76ms. Allocated memory is still 197.1MB. Free memory was 140.2MB in the beginning and 137.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:57,329 INFO L158 Benchmark]: Boogie Preprocessor took 66.49ms. Allocated memory is still 197.1MB. Free memory was 137.0MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:56:57,329 INFO L158 Benchmark]: RCFGBuilder took 515.30ms. Allocated memory is still 197.1MB. Free memory was 135.0MB in the beginning and 119.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 22:56:57,330 INFO L158 Benchmark]: CodeCheck took 586.39ms. Allocated memory is still 197.1MB. Free memory was 119.2MB in the beginning and 100.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 22:56:57,331 INFO L158 Benchmark]: Witness Printer took 10.99ms. Allocated memory is still 197.1MB. Free memory was 100.3MB in the beginning and 100.3MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:56:57,336 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: 0.5s, 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 1558, overapproximation of large string literal at line 1570. 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); [L1570] 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) [L1570] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:32}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CALL funcPtr(data) [L1578] --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 0.32ms. Allocated memory is still 134.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1518.74ms. Allocated memory is still 197.1MB. Free memory was 155.0MB in the beginning and 140.2MB in the end (delta: 14.8MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.76ms. Allocated memory is still 197.1MB. Free memory was 140.2MB in the beginning and 137.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.49ms. Allocated memory is still 197.1MB. Free memory was 137.0MB in the beginning and 135.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.30ms. Allocated memory is still 197.1MB. Free memory was 135.0MB in the beginning and 119.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 586.39ms. Allocated memory is still 197.1MB. Free memory was 119.2MB in the beginning and 100.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 10.99ms. Allocated memory is still 197.1MB. Free memory was 100.3MB in the beginning and 100.3MB 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: unknown boogie variable #t~nondet103 - 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 [2023-11-24 22:56:57,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/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_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi --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 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:57:00,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:57:00,266 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-24 22:57:00,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:57:00,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:57:00,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 22:57:00,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:57:00,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:57:00,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:57:00,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:57:00,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:57:00,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:57:00,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:57:00,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:57:00,332 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:57:00,333 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 22:57:00,333 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 22:57:00,334 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 22:57:00,334 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:57:00,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:57:00,336 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:57:00,337 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 22:57:00,338 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 22:57:00,338 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 22:57:00,339 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:57:00,339 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-24 22:57:00,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:57:00,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:57:00,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:57:00,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:57:00,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:57:00,343 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 22:57:00,343 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:57:00,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:57:00,344 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-24 22:57:00,344 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:57:00,345 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_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4669188c2b812b949944765e4a42b73f4c1b71352a3ff8223dd1434f62c953f1 [2023-11-24 22:57:00,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:57:00,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:57:00,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:57:00,804 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:57:00,805 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:57:00,807 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2023-11-24 22:57:04,160 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:57:04,646 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:57:04,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_65_bad.i [2023-11-24 22:57:04,682 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data/cf005ce40/f2fadcfbaff54203a454d8662bd9ca02/FLAG0d7ef0f50 [2023-11-24 22:57:04,705 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/data/cf005ce40/f2fadcfbaff54203a454d8662bd9ca02 [2023-11-24 22:57:04,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:57:04,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:57:04,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:57:04,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:57:04,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:57:04,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:57:04" (1/1) ... [2023-11-24 22:57:04,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddb162e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:04, skipping insertion in model container [2023-11-24 22:57:04,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:57:04" (1/1) ... [2023-11-24 22:57:04,812 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:57:05,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:57:06,024 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:57:06,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:57:06,377 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:57:06,377 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:57:06,377 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:57:06,378 WARN L675 CHandler]: The function funcPtr is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:57:06,378 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:57:06,378 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:57:06,386 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:57:06,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06 WrapperNode [2023-11-24 22:57:06,386 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:57:06,387 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:57:06,387 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:57:06,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:57:06,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,475 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 65 [2023-11-24 22:57:06,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:57:06,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:57:06,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:57:06,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:57:06,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,512 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:57:06,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:57:06,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:57:06,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:57:06,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:57:06" (1/1) ... [2023-11-24 22:57:06,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 22:57:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 22:57:06,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 22:57:06,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 22:57:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 22:57:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 22:57:06,639 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 22:57:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:57:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 22:57:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:57:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:57:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:57:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:57:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 22:57:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-24 22:57:06,842 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:57:06,844 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:57:06,996 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:57:07,079 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:57:07,079 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:57:07,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:57:07 BoogieIcfgContainer [2023-11-24 22:57:07,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:57:07,082 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 22:57:07,082 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 22:57:07,098 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 22:57:07,099 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:57:07" (1/1) ... [2023-11-24 22:57:07,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:57:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 22:57:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-11-24 22:57:07,195 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-24 22:57:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 22:57:07,199 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 22:57:07,199 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 22:57:07,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 22:57:07,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 22:57:07,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-24 22:57:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:57:07,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:57:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:57:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:57:07,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 22:57:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 22:57:07,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:57:07,765 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-24 22:57:07,805 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet101 [2023-11-24 22:57:07,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 10:57:07 ImpRootNode [2023-11-24 22:57:07,813 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 22:57:07,816 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:57:07,816 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:57:07,816 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:57:07,817 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:57:07" (3/4) ... [2023-11-24 22:57:07,819 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 22:57:07,820 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:57:07,822 INFO L158 Benchmark]: Toolchain (without parser) took 3109.11ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 54.3MB in the beginning and 50.2MB in the end (delta: 4.1MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2023-11-24 22:57:07,823 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 57.5MB in the end (delta: 26.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:57:07,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1670.56ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 54.0MB in the beginning and 61.9MB in the end (delta: -7.9MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2023-11-24 22:57:07,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.40ms. Allocated memory is still 107.0MB. Free memory was 61.9MB in the beginning and 58.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:57:07,827 INFO L158 Benchmark]: Boogie Preprocessor took 40.83ms. Allocated memory is still 107.0MB. Free memory was 58.8MB in the beginning and 56.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:57:07,828 INFO L158 Benchmark]: RCFGBuilder took 562.95ms. Allocated memory is still 107.0MB. Free memory was 56.7MB in the beginning and 68.5MB in the end (delta: -11.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-11-24 22:57:07,828 INFO L158 Benchmark]: CodeCheck took 731.87ms. Allocated memory is still 107.0MB. Free memory was 68.5MB in the beginning and 50.5MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 22:57:07,834 INFO L158 Benchmark]: Witness Printer took 4.95ms. Allocated memory is still 107.0MB. Free memory was 50.5MB in the beginning and 50.2MB in the end (delta: 338.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:57:07,843 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: 0.6s, 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 1558, overapproximation of large string literal at line 1570. 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); [L1570] 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) [L1570] 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] [L1571] CALL CWE191_Integer_Underflow__int_fgets_predec_65_bad() [L1551] int data; [L1552] void (*funcPtr) (int) = CWE191_Integer_Underflow__int_fgets_predec_65b_badSink; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CALL funcPtr(data) [L1578] --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 0.70ms. Allocated memory is still 81.8MB. Free memory was 57.6MB in the beginning and 57.5MB in the end (delta: 26.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1670.56ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 54.0MB in the beginning and 61.9MB in the end (delta: -7.9MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.40ms. Allocated memory is still 107.0MB. Free memory was 61.9MB in the beginning and 58.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.83ms. Allocated memory is still 107.0MB. Free memory was 58.8MB in the beginning and 56.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.95ms. Allocated memory is still 107.0MB. Free memory was 56.7MB in the beginning and 68.5MB in the end (delta: -11.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * CodeCheck took 731.87ms. Allocated memory is still 107.0MB. Free memory was 68.5MB in the beginning and 50.5MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.95ms. Allocated memory is still 107.0MB. Free memory was 50.5MB in the beginning and 50.2MB in the end (delta: 338.7kB). 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: unknown boogie variable #t~nondet101 - 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 [2023-11-24 22:57:07,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5706bd-faf9-4f52-bac9-cb43b5398cb4/bin/ukojak-verify-afCqCEvfdi/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