./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL --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 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:38:41,010 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:38:41,157 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:38:41,167 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:38:41,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:38:41,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:38:41,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:38:41,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:38:41,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:38:41,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:38:41,222 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:38:41,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:38:41,223 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:38:41,225 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:38:41,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:38:41,226 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:38:41,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:38:41,227 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:38:41,228 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:38:41,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:38:41,229 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:38:41,230 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:38:41,232 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:38:41,232 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:38:41,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:38:41,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:38:41,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:38:41,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:38:41,236 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:38:41,236 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:38:41,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:38:41,238 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:38:41,239 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_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 [2023-11-19 03:38:41,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:38:41,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:38:41,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:38:41,688 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:38:41,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:38:41,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-19 03:38:45,129 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:38:45,590 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:38:45,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-19 03:38:45,625 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data/4191c6a8a/6ec6585ef8804d259f46884ebc82aca8/FLAG0539656ed [2023-11-19 03:38:45,642 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data/4191c6a8a/6ec6585ef8804d259f46884ebc82aca8 [2023-11-19 03:38:45,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:38:45,647 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:38:45,649 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:38:45,649 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:38:45,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:38:45,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:38:45" (1/1) ... [2023-11-19 03:38:45,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0df74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:45, skipping insertion in model container [2023-11-19 03:38:45,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:38:45" (1/1) ... [2023-11-19 03:38:45,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:38:46,322 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:38:46,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:38:46,952 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:38:46,976 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:38:47,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:38:47,178 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:47,178 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:47,178 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:47,179 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:47,179 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:47,179 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:47,186 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:38:47,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47 WrapperNode [2023-11-19 03:38:47,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:38:47,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:38:47,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:38:47,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:38:47,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,227 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,266 INFO L138 Inliner]: procedures = 500, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2023-11-19 03:38:47,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:38:47,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:38:47,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:38:47,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:38:47,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:38:47,317 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:38:47,317 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:38:47,317 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:38:47,318 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:38:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:38:47,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:38:47,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:38:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:38:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:38:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:38:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:38:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:38:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 03:38:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:38:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:38:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:38:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:38:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:38:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 03:38:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:38:47,590 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:38:47,592 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:38:47,763 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:38:47,886 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:38:47,886 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:38:47,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:38:47 BoogieIcfgContainer [2023-11-19 03:38:47,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:38:47,902 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:38:47,902 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:38:47,913 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:38:47,913 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:38:47" (1/1) ... [2023-11-19 03:38:47,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:38:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:38:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 03:38:47,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 03:38:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:38:47,988 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:38:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:38:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:38:48,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:38:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:38:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:38:48,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:38:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:38:48,410 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:38:48,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:38:48 ImpRootNode [2023-11-19 03:38:48,447 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:38:48,447 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:38:48,448 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:38:48,448 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:38:48,449 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:38:47" (3/4) ... [2023-11-19 03:38:48,451 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:38:48,453 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:38:48,454 INFO L158 Benchmark]: Toolchain (without parser) took 2806.55ms. Allocated memory is still 138.4MB. Free memory was 95.8MB in the beginning and 82.9MB in the end (delta: 12.9MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2023-11-19 03:38:48,455 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 113.2MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:38:48,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1537.97ms. Allocated memory is still 138.4MB. Free memory was 95.8MB in the beginning and 56.4MB in the end (delta: 39.4MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-19 03:38:48,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.34ms. Allocated memory is still 138.4MB. Free memory was 56.4MB in the beginning and 53.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:38:48,457 INFO L158 Benchmark]: Boogie Preprocessor took 45.75ms. Allocated memory is still 138.4MB. Free memory was 53.4MB in the beginning and 51.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:38:48,458 INFO L158 Benchmark]: RCFGBuilder took 584.02ms. Allocated memory is still 138.4MB. Free memory was 51.9MB in the beginning and 105.2MB in the end (delta: -53.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2023-11-19 03:38:48,459 INFO L158 Benchmark]: CodeCheck took 545.21ms. Allocated memory is still 138.4MB. Free memory was 105.2MB in the beginning and 83.6MB in the end (delta: 21.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 03:38:48,460 INFO L158 Benchmark]: Witness Printer took 5.72ms. Allocated memory is still 138.4MB. Free memory was 83.6MB in the beginning and 82.9MB in the end (delta: 705.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:38:48,465 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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); [L1580] 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) [L1580] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=61, argc=61, argv={62:63}, argv={62:63}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_sub_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] EXPR *dataPtr1 = data [L1554-L1568] { int data = *dataPtr1; { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } *dataPtr1 = data; } [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data={27377:0}, dataPtr1={27377:0}, dataPtr2={27377:0}, 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 0.41ms. Allocated memory is still 113.2MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1537.97ms. Allocated memory is still 138.4MB. Free memory was 95.8MB in the beginning and 56.4MB in the end (delta: 39.4MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.34ms. Allocated memory is still 138.4MB. Free memory was 56.4MB in the beginning and 53.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.75ms. Allocated memory is still 138.4MB. Free memory was 53.4MB in the beginning and 51.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 584.02ms. Allocated memory is still 138.4MB. Free memory was 51.9MB in the beginning and 105.2MB in the end (delta: -53.4MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. * CodeCheck took 545.21ms. Allocated memory is still 138.4MB. Free memory was 105.2MB in the beginning and 83.6MB in the end (delta: 21.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.72ms. Allocated memory is still 138.4MB. Free memory was 83.6MB in the beginning and 82.9MB in the end (delta: 705.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:38:48,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/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_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL --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 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:38:51,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:38:51,851 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 03:38:51,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:38:51,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:38:51,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:38:51,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:38:51,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:38:51,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:38:51,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:38:51,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:38:51,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:38:51,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:38:51,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:38:51,934 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 03:38:51,935 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 03:38:51,935 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:38:51,936 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 03:38:51,936 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:38:51,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:38:51,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:38:51,939 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:38:51,940 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:38:51,940 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:38:51,941 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:38:51,941 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 03:38:51,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:38:51,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:38:51,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:38:51,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:38:51,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:38:51,945 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 03:38:51,946 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 03:38:51,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:38:51,947 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 03:38:51,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 03:38:51,947 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_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 [2023-11-19 03:38:52,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:38:52,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:38:52,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:38:52,464 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:38:52,465 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:38:52,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-19 03:38:55,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:38:56,386 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:38:56,386 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-19 03:38:56,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data/c687eea24/84fb0e2e5f6f478480ba5f49db747e19/FLAG5c5bcd040 [2023-11-19 03:38:56,431 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/data/c687eea24/84fb0e2e5f6f478480ba5f49db747e19 [2023-11-19 03:38:56,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:38:56,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:38:56,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:38:56,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:38:56,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:38:56,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:38:56" (1/1) ... [2023-11-19 03:38:56,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbf4d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:56, skipping insertion in model container [2023-11-19 03:38:56,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:38:56" (1/1) ... [2023-11-19 03:38:56,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:38:57,166 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:38:58,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:38:58,139 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:38:58,162 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:38:58,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:38:58,525 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:58,525 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:58,526 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:58,526 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:58,526 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:58,526 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:38:58,534 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:38:58,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58 WrapperNode [2023-11-19 03:38:58,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:38:58,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:38:58,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:38:58,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:38:58,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,646 INFO L138 Inliner]: procedures = 505, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-11-19 03:38:58,646 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:38:58,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:38:58,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:38:58,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:38:58,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,677 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,677 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,688 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,707 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:38:58,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:38:58,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:38:58,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:38:58,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:38:58" (1/1) ... [2023-11-19 03:38:58,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:38:58,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:38:58,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:38:58,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:38:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:38:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:38:58,835 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:38:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:38:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 03:38:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:38:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:38:58,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:38:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 03:38:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:38:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 03:38:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:38:58,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 03:38:59,026 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:38:59,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:38:59,357 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:38:59,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:38:59,437 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:38:59,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:38:59 BoogieIcfgContainer [2023-11-19 03:38:59,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:38:59,445 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:38:59,445 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:38:59,457 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:38:59,458 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:38:59" (1/1) ... [2023-11-19 03:38:59,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:38:59,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:38:59,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 03:38:59,555 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 03:38:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 03:38:59,563 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:38:59,564 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 03:38:59,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 03:38:59,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 03:38:59,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 03:38:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:38:59,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:39:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:39:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:39:00,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 03:39:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 03:39:00,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 03:39:00,773 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 03:39:00,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:39:00 ImpRootNode [2023-11-19 03:39:00,825 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:39:00,829 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:39:00,829 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:39:00,829 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:39:00,830 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:38:59" (3/4) ... [2023-11-19 03:39:00,832 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 03:39:00,834 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:39:00,835 INFO L158 Benchmark]: Toolchain (without parser) took 4398.52ms. Allocated memory is still 100.7MB. Free memory was 72.4MB in the beginning and 56.9MB in the end (delta: 15.5MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-11-19 03:39:00,836 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 69.2MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:39:00,837 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2097.69ms. Allocated memory is still 100.7MB. Free memory was 72.4MB in the beginning and 68.7MB in the end (delta: 3.7MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. [2023-11-19 03:39:00,838 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.20ms. Allocated memory is still 100.7MB. Free memory was 68.7MB in the beginning and 66.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:39:00,839 INFO L158 Benchmark]: Boogie Preprocessor took 67.96ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 63.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:39:00,840 INFO L158 Benchmark]: RCFGBuilder took 715.22ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 45.1MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 03:39:00,841 INFO L158 Benchmark]: CodeCheck took 1380.39ms. Allocated memory is still 100.7MB. Free memory was 45.1MB in the beginning and 57.5MB in the end (delta: -12.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:39:00,842 INFO L158 Benchmark]: Witness Printer took 5.07ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 56.9MB in the end (delta: 658.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:39:00,859 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: 1.3s, 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, 0.3s 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: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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); [L1580] 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) [L1580] 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}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_sub_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] EXPR *dataPtr1 = data [L1554-L1568] { int data = *dataPtr1; { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } *dataPtr1 = data; } [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data={7:0}, dataPtr1={7:0}, dataPtr2={7:0}, 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 0.74ms. Allocated memory is still 69.2MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2097.69ms. Allocated memory is still 100.7MB. Free memory was 72.4MB in the beginning and 68.7MB in the end (delta: 3.7MB). Peak memory consumption was 41.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.20ms. Allocated memory is still 100.7MB. Free memory was 68.7MB in the beginning and 66.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.96ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 63.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 715.22ms. Allocated memory is still 100.7MB. Free memory was 63.9MB in the beginning and 45.1MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1380.39ms. Allocated memory is still 100.7MB. Free memory was 45.1MB in the beginning and 57.5MB in the end (delta: -12.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.07ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 56.9MB in the end (delta: 658.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 03:39:00,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73493440-d576-4118-9e01-11a00863f31f/bin/ukojak-verify-G8NBE6pJGL/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