./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:51:08,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:51:08,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:51:08,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:51:08,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:51:08,981 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:51:08,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:51:08,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:51:08,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:51:08,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:51:08,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:51:08,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:51:08,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:51:08,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:51:08,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:51:08,997 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:51:08,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:51:08,998 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:51:08,999 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:51:08,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:51:09,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:51:09,002 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:51:09,003 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:51:09,003 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:51:09,004 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:51:09,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:51:09,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:51:09,006 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:51:09,006 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:51:09,007 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:51:09,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:51:09,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:51:09,009 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_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa [2023-11-21 18:51:09,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:51:09,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:51:09,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:51:09,444 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:51:09,445 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:51:09,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2023-11-21 18:51:12,844 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:51:13,392 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:51:13,400 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2023-11-21 18:51:13,441 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data/d2055f1e3/884a5ff981a045f88b6c66a1b368bc45/FLAG2899c4286 [2023-11-21 18:51:13,459 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data/d2055f1e3/884a5ff981a045f88b6c66a1b368bc45 [2023-11-21 18:51:13,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:51:13,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:51:13,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:51:13,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:51:13,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:51:13,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:51:13" (1/1) ... [2023-11-21 18:51:13,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec34720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:13, skipping insertion in model container [2023-11-21 18:51:13,477 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:51:13" (1/1) ... [2023-11-21 18:51:13,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:51:14,055 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:51:14,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:51:14,884 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:51:14,912 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:51:14,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:51:15,174 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:15,174 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:15,174 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:15,175 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:15,175 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:15,175 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:15,185 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:51:15,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15 WrapperNode [2023-11-21 18:51:15,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:51:15,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:51:15,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:51:15,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:51:15,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,268 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 51 [2023-11-21 18:51:15,269 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:51:15,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:51:15,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:51:15,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:51:15,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,287 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,303 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:51:15,308 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:51:15,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:51:15,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:51:15,309 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:15" (1/1) ... [2023-11-21 18:51:15,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:51:15,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:51:15,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:51:15,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:51:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:51:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:51:15,446 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:51:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:51:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:51:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:51:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:51:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:51:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:51:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:51:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:51:15,730 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:51:15,734 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:51:15,946 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:51:16,037 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:51:16,037 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:51:16,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:16 BoogieIcfgContainer [2023-11-21 18:51:16,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:51:16,041 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:51:16,041 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:51:16,055 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:51:16,056 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:16" (1/1) ... [2023-11-21 18:51:16,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:51:16,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:51:16,147 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:51:16,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:51:16,155 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:16,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:51:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:16,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:51:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:16,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:51:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:16,578 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:51:16,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:51:16 ImpRootNode [2023-11-21 18:51:16,625 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:51:16,626 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:51:16,627 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:51:16,627 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:51:16,628 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:16" (3/4) ... [2023-11-21 18:51:16,631 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:51:16,632 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:51:16,634 INFO L158 Benchmark]: Toolchain (without parser) took 3169.28ms. Allocated memory was 163.6MB in the beginning and 220.2MB in the end (delta: 56.6MB). Free memory was 115.5MB in the beginning and 140.2MB in the end (delta: -24.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-11-21 18:51:16,635 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:51:16,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1720.89ms. Allocated memory was 163.6MB in the beginning and 220.2MB in the end (delta: 56.6MB). Free memory was 115.5MB in the beginning and 177.9MB in the end (delta: -62.4MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2023-11-21 18:51:16,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.40ms. Allocated memory is still 220.2MB. Free memory was 177.9MB in the beginning and 175.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:51:16,638 INFO L158 Benchmark]: Boogie Preprocessor took 37.44ms. Allocated memory is still 220.2MB. Free memory was 175.8MB in the beginning and 173.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:51:16,639 INFO L158 Benchmark]: RCFGBuilder took 731.86ms. Allocated memory is still 220.2MB. Free memory was 173.7MB in the beginning and 159.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-21 18:51:16,640 INFO L158 Benchmark]: CodeCheck took 584.49ms. Allocated memory is still 220.2MB. Free memory was 159.1MB in the beginning and 141.2MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:51:16,641 INFO L158 Benchmark]: Witness Printer took 6.39ms. Allocated memory is still 220.2MB. Free memory was 141.2MB in the beginning and 140.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:51:16,646 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: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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); [L1571] 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) [L1571] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:27}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] EXPR data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552-L1562] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1564] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 113.2MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1720.89ms. Allocated memory was 163.6MB in the beginning and 220.2MB in the end (delta: 56.6MB). Free memory was 115.5MB in the beginning and 177.9MB in the end (delta: -62.4MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.40ms. Allocated memory is still 220.2MB. Free memory was 177.9MB in the beginning and 175.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.44ms. Allocated memory is still 220.2MB. Free memory was 175.8MB in the beginning and 173.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 731.86ms. Allocated memory is still 220.2MB. Free memory was 173.7MB in the beginning and 159.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 584.49ms. Allocated memory is still 220.2MB. Free memory was 159.1MB in the beginning and 141.2MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 6.39ms. Allocated memory is still 220.2MB. Free memory was 141.2MB in the beginning and 140.2MB in the end (delta: 1.0MB). 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 18:51:16,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:51:19,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:51:20,182 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:51:20,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:51:20,254 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:51:20,255 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:51:20,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:51:20,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:51:20,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:51:20,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:51:20,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:51:20,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:51:20,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:51:20,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:51:20,269 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:51:20,270 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:51:20,270 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:51:20,271 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:51:20,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:51:20,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:51:20,273 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:51:20,275 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:51:20,275 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:51:20,276 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:51:20,276 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:51:20,277 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:51:20,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:51:20,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:51:20,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:51:20,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:51:20,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:51:20,281 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:51:20,282 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:51:20,282 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:51:20,283 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:51:20,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:51:20,284 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_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa [2023-11-21 18:51:20,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:51:20,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:51:20,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:51:20,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:51:20,884 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:51:20,886 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2023-11-21 18:51:24,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:51:24,951 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:51:24,951 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2023-11-21 18:51:24,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data/26e0c3de9/78a5c1419c7d4db3849112b2d8f04971/FLAGd5948cf57 [2023-11-21 18:51:25,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/data/26e0c3de9/78a5c1419c7d4db3849112b2d8f04971 [2023-11-21 18:51:25,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:51:25,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:51:25,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:51:25,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:51:25,035 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:51:25,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:51:25" (1/1) ... [2023-11-21 18:51:25,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@665bd2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:25, skipping insertion in model container [2023-11-21 18:51:25,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:51:25" (1/1) ... [2023-11-21 18:51:25,128 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:51:25,801 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:51:26,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:51:26,820 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:51:26,850 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:51:26,957 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:51:27,181 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:27,182 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:27,182 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:27,182 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:27,182 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:27,183 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:51:27,196 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:51:27,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27 WrapperNode [2023-11-21 18:51:27,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:51:27,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:51:27,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:51:27,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:51:27,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,250 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,285 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2023-11-21 18:51:27,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:51:27,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:51:27,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:51:27,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:51:27,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:51:27,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:51:27,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:51:27,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:51:27,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:51:27,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:51:27,413 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:51:27,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:51:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:51:27,467 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:51:27,467 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:51:27,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:51:27,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:51:27,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:51:27,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:51:27,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:51:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:51:27,469 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:51:27,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:51:27,682 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:51:27,685 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:51:27,856 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:51:27,917 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:51:27,917 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:51:27,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:27 BoogieIcfgContainer [2023-11-21 18:51:27,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:51:27,921 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:51:27,921 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:51:27,934 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:51:27,935 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:27" (1/1) ... [2023-11-21 18:51:27,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:51:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:51:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:51:28,054 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:51:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:51:28,066 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:51:28,066 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:51:28,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:51:28,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:51:28,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:51:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:28,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:51:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:28,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:51:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:51:28,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-21 18:51:28,793 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:51:28,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:51:28 ImpRootNode [2023-11-21 18:51:28,840 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:51:28,843 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:51:28,843 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:51:28,843 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:51:28,844 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:51:27" (3/4) ... [2023-11-21 18:51:28,847 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:51:28,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:51:28,850 INFO L158 Benchmark]: Toolchain (without parser) took 3825.32ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.5MB in the beginning and 68.0MB in the end (delta: -17.5MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-21 18:51:28,851 INFO L158 Benchmark]: CDTParser took 0.84ms. Allocated memory is still 77.6MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:51:28,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2168.91ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.3MB in the beginning and 49.7MB in the end (delta: 566.1kB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2023-11-21 18:51:28,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.48ms. Allocated memory is still 100.7MB. Free memory was 49.7MB in the beginning and 46.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:51:28,855 INFO L158 Benchmark]: Boogie Preprocessor took 88.09ms. Allocated memory is still 100.7MB. Free memory was 46.2MB in the beginning and 72.5MB in the end (delta: -26.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-11-21 18:51:28,856 INFO L158 Benchmark]: RCFGBuilder took 543.93ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 55.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:51:28,857 INFO L158 Benchmark]: CodeCheck took 919.90ms. Allocated memory is still 100.7MB. Free memory was 55.2MB in the beginning and 68.6MB in the end (delta: -13.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:51:28,858 INFO L158 Benchmark]: Witness Printer took 6.12ms. Allocated memory is still 100.7MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:51:28,870 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: 0.8s, 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: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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); [L1571] 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) [L1571] 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] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] EXPR data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552-L1562] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1564] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84ms. Allocated memory is still 77.6MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2168.91ms. Allocated memory was 77.6MB in the beginning and 100.7MB in the end (delta: 23.1MB). Free memory was 50.3MB in the beginning and 49.7MB in the end (delta: 566.1kB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.48ms. Allocated memory is still 100.7MB. Free memory was 49.7MB in the beginning and 46.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.09ms. Allocated memory is still 100.7MB. Free memory was 46.2MB in the beginning and 72.5MB in the end (delta: -26.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * RCFGBuilder took 543.93ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 55.2MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 919.90ms. Allocated memory is still 100.7MB. Free memory was 55.2MB in the beginning and 68.6MB in the end (delta: -13.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.12ms. Allocated memory is still 100.7MB. Free memory is still 68.0MB. 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 18:51:28,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3ea697d-c44c-4815-be12-9ccf6b6388c2/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