./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/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_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/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_b8162074-4240-4007-90b8-84419a86a79b/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 a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:22:08,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:22:08,636 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:22:08,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:22:08,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:22:08,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:22:08,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:22:08,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:22:08,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:22:08,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:22:08,672 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:22:08,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:22:08,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:22:08,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:22:08,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:22:08,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:22:08,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:22:08,676 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:22:08,677 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:22:08,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:22:08,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:22:08,679 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:22:08,679 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:22:08,680 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:22:08,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:22:08,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:22:08,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:22:08,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:22:08,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:22:08,683 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:22:08,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:22:08,684 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:22:08,685 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_b8162074-4240-4007-90b8-84419a86a79b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2023-11-23 20:22:08,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:22:08,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:22:09,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:22:09,003 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:22:09,004 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:22:09,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-23 20:22:12,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:22:12,508 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:22:12,509 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-23 20:22:12,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data/504dc68b4/200866c25345462193cc8cd94e5a912e/FLAG999828ff5 [2023-11-23 20:22:12,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data/504dc68b4/200866c25345462193cc8cd94e5a912e [2023-11-23 20:22:12,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:22:12,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:22:12,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:22:12,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:22:12,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:22:12,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:12" (1/1) ... [2023-11-23 20:22:12,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8b28f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:12, skipping insertion in model container [2023-11-23 20:22:12,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:12" (1/1) ... [2023-11-23 20:22:12,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:22:13,159 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:22:13,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:22:13,775 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:22:13,807 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:22:13,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:22:14,078 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:14,079 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:14,079 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:14,079 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:14,079 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:14,080 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:14,088 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:22:14,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14 WrapperNode [2023-11-23 20:22:14,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:22:14,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:22:14,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:22:14,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:22:14,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,127 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,155 INFO L138 Inliner]: procedures = 501, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-23 20:22:14,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:22:14,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:22:14,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:22:14,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:22:14,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,171 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,189 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:22:14,190 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:22:14,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:22:14,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:22:14,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:22:14,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:22:14,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:22:14,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:22:14,273 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:22:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:22:14,274 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:22:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:22:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:22:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:22:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:22:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:22:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:22:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:22:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:22:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:22:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:22:14,431 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:22:14,434 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:22:14,584 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:22:14,633 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:22:14,633 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:22:14,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:14 BoogieIcfgContainer [2023-11-23 20:22:14,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:22:14,636 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:22:14,637 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:22:14,647 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:22:14,648 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:14" (1/1) ... [2023-11-23 20:22:14,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:22:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:22:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:22:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:22:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:22:14,710 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:22:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:22:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:15,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:22:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:15,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:22:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:15,317 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:22:15,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:22:15 ImpRootNode [2023-11-23 20:22:15,357 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:22:15,359 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:22:15,359 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:22:15,360 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:22:15,361 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:14" (3/4) ... [2023-11-23 20:22:15,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:22:15,366 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:22:15,368 INFO L158 Benchmark]: Toolchain (without parser) took 2804.86ms. Allocated memory was 142.6MB in the beginning and 211.8MB in the end (delta: 69.2MB). Free memory was 92.7MB in the beginning and 159.4MB in the end (delta: -66.7MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-11-23 20:22:15,368 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:22:15,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1526.01ms. Allocated memory was 142.6MB in the beginning and 211.8MB in the end (delta: 69.2MB). Free memory was 92.5MB in the beginning and 139.9MB in the end (delta: -47.4MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. [2023-11-23 20:22:15,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.33ms. Allocated memory is still 211.8MB. Free memory was 139.9MB in the beginning and 137.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:22:15,372 INFO L158 Benchmark]: Boogie Preprocessor took 33.17ms. Allocated memory is still 211.8MB. Free memory was 137.0MB in the beginning and 134.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:22:15,373 INFO L158 Benchmark]: RCFGBuilder took 445.38ms. Allocated memory is still 211.8MB. Free memory was 134.9MB in the beginning and 119.3MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:22:15,374 INFO L158 Benchmark]: CodeCheck took 720.84ms. Allocated memory is still 211.8MB. Free memory was 119.3MB in the beginning and 160.4MB in the end (delta: -41.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:22:15,374 INFO L158 Benchmark]: Witness Printer took 7.15ms. Allocated memory is still 211.8MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:22:15,385 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. 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)=69, argc=69, argv={70:71}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={15263:0}, dataPtr={15263:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1526.01ms. Allocated memory was 142.6MB in the beginning and 211.8MB in the end (delta: 69.2MB). Free memory was 92.5MB in the beginning and 139.9MB in the end (delta: -47.4MB). Peak memory consumption was 33.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.33ms. Allocated memory is still 211.8MB. Free memory was 139.9MB in the beginning and 137.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.17ms. Allocated memory is still 211.8MB. Free memory was 137.0MB in the beginning and 134.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 445.38ms. Allocated memory is still 211.8MB. Free memory was 134.9MB in the beginning and 119.3MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 720.84ms. Allocated memory is still 211.8MB. Free memory was 119.3MB in the beginning and 160.4MB in the end (delta: -41.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.15ms. Allocated memory is still 211.8MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:22:15,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/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_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/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_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/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_b8162074-4240-4007-90b8-84419a86a79b/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 a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:22:18,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:22:18,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:22:18,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:22:18,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:22:18,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:22:18,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:22:18,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:22:18,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:22:18,297 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:22:18,298 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:22:18,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:22:18,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:22:18,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:22:18,300 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:22:18,301 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:22:18,301 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:22:18,302 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:22:18,302 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:22:18,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:22:18,304 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:22:18,304 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:22:18,305 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:22:18,305 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:22:18,306 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:22:18,306 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:22:18,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:22:18,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:22:18,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:22:18,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:22:18,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:22:18,309 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:22:18,310 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:22:18,310 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:22:18,310 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:22:18,311 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:22:18,311 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_b8162074-4240-4007-90b8-84419a86a79b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2023-11-23 20:22:18,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:22:18,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:22:18,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:22:18,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:22:18,758 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:22:18,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-23 20:22:21,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:22:22,366 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:22:22,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-23 20:22:22,402 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data/459cc02b0/ebed865797c5416aadffd43578773fc3/FLAG7a948b437 [2023-11-23 20:22:22,425 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/data/459cc02b0/ebed865797c5416aadffd43578773fc3 [2023-11-23 20:22:22,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:22:22,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:22:22,436 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:22:22,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:22:22,442 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:22:22,443 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:22" (1/1) ... [2023-11-23 20:22:22,444 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de3ab2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:22, skipping insertion in model container [2023-11-23 20:22:22,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:22:22" (1/1) ... [2023-11-23 20:22:22,525 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:22:23,032 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:22:23,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:22:23,606 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:22:23,627 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:22:23,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:22:23,845 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:23,847 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:23,847 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:23,848 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:23,848 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:23,848 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:22:23,856 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:22:23,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23 WrapperNode [2023-11-23 20:22:23,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:22:23,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:22:23,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:22:23,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:22:23,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,923 INFO L138 Inliner]: procedures = 506, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2023-11-23 20:22:23,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:22:23,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:22:23,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:22:23,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:22:23,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:23,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:22:23,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:22:23,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:22:23,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:22:23,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:22:23" (1/1) ... [2023-11-23 20:22:24,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:22:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:22:24,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:22:24,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:22:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:22:24,074 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:22:24,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:22:24,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:22:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 20:22:24,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:22:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-23 20:22:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:22:24,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:22:24,299 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:22:24,302 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:22:24,568 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:22:24,642 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:22:24,643 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:22:24,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:24 BoogieIcfgContainer [2023-11-23 20:22:24,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:22:24,647 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:22:24,647 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:22:24,658 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:22:24,658 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:24" (1/1) ... [2023-11-23 20:22:24,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:22:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:22:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:22:24,770 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:22:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:22:24,776 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:22:24,776 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:22:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:22:24,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:22:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:22:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:25,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:22:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:25,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:22:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:22:25,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-23 20:22:25,747 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:22:25,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:22:25 ImpRootNode [2023-11-23 20:22:25,776 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:22:25,777 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:22:25,777 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:22:25,777 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:22:25,778 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:22:24" (3/4) ... [2023-11-23 20:22:25,780 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:22:25,782 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:22:25,783 INFO L158 Benchmark]: Toolchain (without parser) took 3350.30ms. Allocated memory is still 94.4MB. Free memory was 67.3MB in the beginning and 47.5MB in the end (delta: 19.8MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2023-11-23 20:22:25,783 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 46.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:22:25,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1420.74ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 59.2MB in the end (delta: 8.0MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2023-11-23 20:22:25,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.26ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 56.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:22:25,785 INFO L158 Benchmark]: Boogie Preprocessor took 56.11ms. Allocated memory is still 94.4MB. Free memory was 56.0MB in the beginning and 54.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:22:25,786 INFO L158 Benchmark]: RCFGBuilder took 650.99ms. Allocated memory is still 94.4MB. Free memory was 53.9MB in the beginning and 36.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:22:25,787 INFO L158 Benchmark]: CodeCheck took 1129.62ms. Allocated memory is still 94.4MB. Free memory was 36.1MB in the beginning and 48.1MB in the end (delta: -12.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:22:25,787 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 47.5MB in the end (delta: 549.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:22:25,791 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: 1.0s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 69.2MB. Free memory is still 46.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1420.74ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 59.2MB in the end (delta: 8.0MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.26ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 56.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.11ms. Allocated memory is still 94.4MB. Free memory was 56.0MB in the beginning and 54.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 650.99ms. Allocated memory is still 94.4MB. Free memory was 53.9MB in the beginning and 36.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1129.62ms. Allocated memory is still 94.4MB. Free memory was 36.1MB in the beginning and 48.1MB in the end (delta: -12.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 94.4MB. Free memory was 48.1MB in the beginning and 47.5MB in the end (delta: 549.9kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:22:25,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8162074-4240-4007-90b8-84419a86a79b/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