./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 527bcce2 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_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/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_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2 --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-527bcce [2023-11-21 18:55:24,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:55:24,670 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:55:24,675 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:55:24,675 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:55:24,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:55:24,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:55:24,704 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:55:24,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:55:24,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:55:24,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:55:24,707 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:55:24,707 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:55:24,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:55:24,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:55:24,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:55:24,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:55:24,710 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:55:24,711 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:55:24,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:55:24,712 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:55:24,712 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:55:24,713 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:55:24,714 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:55:24,714 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:55:24,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:55:24,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:55:24,716 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:55:24,716 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:55:24,717 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:55:24,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:55:24,718 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:55:24,718 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_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2023-11-21 18:55:24,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:55:25,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:55:25,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:55:25,023 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:55:25,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:55:25,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-21 18:55:28,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:55:28,513 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:55:28,520 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-21 18:55:28,559 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data/aa4b6f2bf/c09cf6e687ed4060a32a7d53b0662906/FLAG377f69e1c [2023-11-21 18:55:28,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data/aa4b6f2bf/c09cf6e687ed4060a32a7d53b0662906 [2023-11-21 18:55:28,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:55:28,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:55:28,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:55:28,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:55:28,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:55:28,598 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:55:28" (1/1) ... [2023-11-21 18:55:28,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64133fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:28, skipping insertion in model container [2023-11-21 18:55:28,600 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:55:28" (1/1) ... [2023-11-21 18:55:28,682 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:55:29,065 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:55:29,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:55:29,603 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:55:29,630 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:55:29,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:55:29,902 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:29,902 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:29,902 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:29,902 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:29,903 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:29,903 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:29,911 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:55:29,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29 WrapperNode [2023-11-21 18:55:29,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:55:29,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:55:29,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:55:29,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:55:29,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:29,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,001 INFO L138 Inliner]: procedures = 501, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-21 18:55:30,002 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:55:30,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:55:30,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:55:30,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:55:30,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,031 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,031 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,057 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,060 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:55:30,061 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:55:30,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:55:30,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:55:30,074 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:29" (1/1) ... [2023-11-21 18:55:30,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:55:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:55:30,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:55:30,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:55:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:55:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:55:30,152 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:55:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:55:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:55:30,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 18:55:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:55:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:55:30,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:55:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:55:30,153 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:55:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 18:55:30,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:55:30,309 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:55:30,311 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:55:30,458 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:55:30,504 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:55:30,504 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:55:30,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:55:30 BoogieIcfgContainer [2023-11-21 18:55:30,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:55:30,514 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:55:30,514 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:55:30,524 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:55:30,524 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:55:30" (1/1) ... [2023-11-21 18:55:30,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:55:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:55:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:55:30,596 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:55:30,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:55:30,602 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:55:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:55:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:30,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:55:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:31,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:55:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:31,053 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:55:31,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:55:31 ImpRootNode [2023-11-21 18:55:31,092 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:55:31,097 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:55:31,097 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:55:31,097 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:55:31,098 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:55:30" (3/4) ... [2023-11-21 18:55:31,103 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:55:31,104 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:55:31,106 INFO L158 Benchmark]: Toolchain (without parser) took 2517.70ms. Allocated memory is still 151.0MB. Free memory was 114.0MB in the beginning and 63.3MB in the end (delta: 50.7MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2023-11-21 18:55:31,107 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 151.0MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:55:31,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1320.30ms. Allocated memory is still 151.0MB. Free memory was 114.0MB in the beginning and 106.5MB in the end (delta: 7.5MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-11-21 18:55:31,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.02ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 104.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:55:31,109 INFO L158 Benchmark]: Boogie Preprocessor took 57.79ms. Allocated memory is still 151.0MB. Free memory was 104.0MB in the beginning and 102.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:55:31,110 INFO L158 Benchmark]: RCFGBuilder took 452.21ms. Allocated memory is still 151.0MB. Free memory was 102.2MB in the beginning and 86.4MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:55:31,112 INFO L158 Benchmark]: CodeCheck took 578.59ms. Allocated memory is still 151.0MB. Free memory was 86.4MB in the beginning and 63.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 18:55:31,114 INFO L158 Benchmark]: Witness Printer took 8.28ms. Allocated memory is still 151.0MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:55:31,123 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: 0.5s, 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, 0.1s 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 0.58ms. Allocated memory is still 151.0MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1320.30ms. Allocated memory is still 151.0MB. Free memory was 114.0MB in the beginning and 106.5MB in the end (delta: 7.5MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.02ms. Allocated memory is still 151.0MB. Free memory was 106.5MB in the beginning and 104.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.79ms. Allocated memory is still 151.0MB. Free memory was 104.0MB in the beginning and 102.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.21ms. Allocated memory is still 151.0MB. Free memory was 102.2MB in the beginning and 86.4MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 578.59ms. Allocated memory is still 151.0MB. Free memory was 86.4MB in the beginning and 63.3MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 8.28ms. Allocated memory is still 151.0MB. Free memory is still 63.3MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:55:31,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/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_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2 --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-527bcce [2023-11-21 18:55:33,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:55:33,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:55:33,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:55:33,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:55:33,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:55:33,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:55:33,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:55:33,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:55:33,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:55:33,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:55:33,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:55:33,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:55:33,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:55:33,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:55:33,834 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:55:33,835 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:55:33,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:55:33,836 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:55:33,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:55:33,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:55:33,838 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:55:33,838 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:55:33,839 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:55:33,839 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:55:33,840 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:55:33,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:55:33,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:55:33,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:55:33,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:55:33,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:55:33,843 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:55:33,844 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:55:33,844 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:55:33,845 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:55:33,846 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:55:33,846 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_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2023-11-21 18:55:34,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:55:34,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:55:34,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:55:34,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:55:34,251 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:55:34,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-21 18:55:37,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:55:37,906 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:55:37,907 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2023-11-21 18:55:37,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data/9801504f6/53cfe6b852ad403b87fdf2cd703fa0ab/FLAGa85c9bb06 [2023-11-21 18:55:37,961 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/data/9801504f6/53cfe6b852ad403b87fdf2cd703fa0ab [2023-11-21 18:55:37,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:55:37,965 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:55:37,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:55:37,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:55:37,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:55:37,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:55:37" (1/1) ... [2023-11-21 18:55:37,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ea3017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:37, skipping insertion in model container [2023-11-21 18:55:37,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:55:37" (1/1) ... [2023-11-21 18:55:38,046 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:55:38,427 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:55:38,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:55:38,918 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:55:38,941 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:55:39,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:55:39,215 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:39,216 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:39,216 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:39,216 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:39,216 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:39,216 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:55:39,224 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:55:39,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39 WrapperNode [2023-11-21 18:55:39,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:55:39,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:55:39,227 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:55:39,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:55:39,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,336 INFO L138 Inliner]: procedures = 506, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2023-11-21 18:55:39,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:55:39,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:55:39,337 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:55:39,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:55:39,346 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:55:39,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:55:39,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:55:39,411 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:55:39,412 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:55:39" (1/1) ... [2023-11-21 18:55:39,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:55:39,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:55:39,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:55:39,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:55:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:55:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:55:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:55:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:55:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:55:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:55:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:55:39,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:55:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 18:55:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:55:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 18:55:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:55:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:55:39,709 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:55:39,711 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:55:39,984 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:55:40,050 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:55:40,051 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:55:40,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:55:40 BoogieIcfgContainer [2023-11-21 18:55:40,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:55:40,054 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:55:40,054 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:55:40,064 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:55:40,065 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:55:40" (1/1) ... [2023-11-21 18:55:40,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:55:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:55:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:55:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:55:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:55:40,160 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:55:40,161 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:55:40,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:55:40,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:55:40,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:55:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:40,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:55:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:40,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:55:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:55:41,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-21 18:55:41,081 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:55:41,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:55:41 ImpRootNode [2023-11-21 18:55:41,124 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:55:41,126 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:55:41,126 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:55:41,127 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:55:41,127 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:55:40" (3/4) ... [2023-11-21 18:55:41,129 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:55:41,130 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:55:41,131 INFO L158 Benchmark]: Toolchain (without parser) took 3165.77ms. Allocated memory was 79.7MB in the beginning and 115.3MB in the end (delta: 35.7MB). Free memory was 52.4MB in the beginning and 79.9MB in the end (delta: -27.5MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-21 18:55:41,132 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:55:41,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1259.76ms. Allocated memory was 79.7MB in the beginning and 115.3MB in the end (delta: 35.7MB). Free memory was 52.2MB in the beginning and 59.2MB in the end (delta: -7.1MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. [2023-11-21 18:55:41,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 109.30ms. Allocated memory is still 115.3MB. Free memory was 59.2MB in the beginning and 86.9MB in the end (delta: -27.6MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2023-11-21 18:55:41,135 INFO L158 Benchmark]: Boogie Preprocessor took 73.04ms. Allocated memory is still 115.3MB. Free memory was 86.9MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:55:41,136 INFO L158 Benchmark]: RCFGBuilder took 642.31ms. Allocated memory is still 115.3MB. Free memory was 84.8MB in the beginning and 66.0MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:55:41,137 INFO L158 Benchmark]: CodeCheck took 1070.61ms. Allocated memory is still 115.3MB. Free memory was 65.8MB in the beginning and 79.9MB in the end (delta: -14.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:55:41,137 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 115.3MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:55:41,149 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 0.68ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1259.76ms. Allocated memory was 79.7MB in the beginning and 115.3MB in the end (delta: 35.7MB). Free memory was 52.2MB in the beginning and 59.2MB in the end (delta: -7.1MB). Peak memory consumption was 28.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 109.30ms. Allocated memory is still 115.3MB. Free memory was 59.2MB in the beginning and 86.9MB in the end (delta: -27.6MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.04ms. Allocated memory is still 115.3MB. Free memory was 86.9MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 642.31ms. Allocated memory is still 115.3MB. Free memory was 84.8MB in the beginning and 66.0MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1070.61ms. Allocated memory is still 115.3MB. Free memory was 65.8MB in the beginning and 79.9MB in the end (delta: -14.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 115.3MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:55:41,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710f69a2-4d32-413a-9043-af28d2f00251/bin/ukojak-verify-i0I2FZA1j2/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