./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:30:18,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:30:18,860 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:30:18,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:30:18,869 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:30:18,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:30:18,911 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:30:18,911 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:30:18,912 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:30:18,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:30:18,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:30:18,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:30:18,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:30:18,921 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:30:18,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:30:18,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:30:18,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:30:18,923 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:30:18,924 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:30:18,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:30:18,924 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:30:18,926 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:30:18,926 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:30:18,928 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:30:18,928 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:30:18,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:30:18,929 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:30:18,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:30:18,930 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:30:18,931 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:30:18,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:30:18,932 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:30:18,933 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_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c [2023-11-21 18:30:19,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:30:19,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:30:19,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:30:19,220 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:30:19,220 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:30:19,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-21 18:30:22,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:30:22,747 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:30:22,748 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-21 18:30:22,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data/f1c492465/224afedda8f74c28a6e81204957cd349/FLAG9c70866f3 [2023-11-21 18:30:22,803 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data/f1c492465/224afedda8f74c28a6e81204957cd349 [2023-11-21 18:30:22,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:30:22,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:30:22,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:30:22,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:30:22,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:30:22,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:30:22" (1/1) ... [2023-11-21 18:30:22,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570c3a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:22, skipping insertion in model container [2023-11-21 18:30:22,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:30:22" (1/1) ... [2023-11-21 18:30:22,900 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:30:23,316 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:30:23,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:30:23,946 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:30:23,969 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:30:24,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:30:24,251 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:24,251 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:24,251 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:24,252 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:24,252 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:24,252 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:24,260 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:30:24,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24 WrapperNode [2023-11-21 18:30:24,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:30:24,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:30:24,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:30:24,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:30:24,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,325 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,365 INFO L138 Inliner]: procedures = 503, calls = 67, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 57 [2023-11-21 18:30:24,365 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:30:24,366 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:30:24,366 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:30:24,366 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:30:24,376 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,417 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:30:24,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:30:24,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:30:24,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:30:24,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:30:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:30:24,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:30:24,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:30:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:30:24,510 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:30:24,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:30:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:30:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 18:30:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:30:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:30:24,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:30:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:30:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:30:24,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 18:30:24,669 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:30:24,672 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:30:24,802 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:30:24,873 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:30:24,873 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:30:24,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:30:24 BoogieIcfgContainer [2023-11-21 18:30:24,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:30:24,876 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:30:24,876 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:30:24,887 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:30:24,887 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:30:24" (1/1) ... [2023-11-21 18:30:24,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:30:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:30:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:30:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:30:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:30:24,957 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:30:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:30:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:25,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:30:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:25,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:30:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:25,300 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:30:25,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:30:25 ImpRootNode [2023-11-21 18:30:25,331 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:30:25,332 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:30:25,332 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:30:25,333 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:30:25,333 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:30:24" (3/4) ... [2023-11-21 18:30:25,336 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:30:25,337 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:30:25,338 INFO L158 Benchmark]: Toolchain (without parser) took 2527.55ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 81.4MB in the end (delta: 4.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-11-21 18:30:25,339 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:30:25,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1447.47ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 66.3MB in the end (delta: 19.9MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2023-11-21 18:30:25,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.45ms. Allocated memory is still 134.2MB. Free memory was 66.3MB in the beginning and 63.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:30:25,341 INFO L158 Benchmark]: Boogie Preprocessor took 56.36ms. Allocated memory is still 134.2MB. Free memory was 63.4MB in the beginning and 62.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:30:25,342 INFO L158 Benchmark]: RCFGBuilder took 452.08ms. Allocated memory is still 134.2MB. Free memory was 62.1MB in the beginning and 100.3MB in the end (delta: -38.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:30:25,342 INFO L158 Benchmark]: CodeCheck took 455.64ms. Allocated memory is still 134.2MB. Free memory was 99.4MB in the beginning and 81.4MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 18:30:25,343 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 134.2MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:30:25,347 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: 0.4s, 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: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=30, argc=30, argv={31:29}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_53d_badSink(data) [L1587] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1447.47ms. Allocated memory is still 134.2MB. Free memory was 86.2MB in the beginning and 66.3MB in the end (delta: 19.9MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.45ms. Allocated memory is still 134.2MB. Free memory was 66.3MB in the beginning and 63.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.36ms. Allocated memory is still 134.2MB. Free memory was 63.4MB in the beginning and 62.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.08ms. Allocated memory is still 134.2MB. Free memory was 62.1MB in the beginning and 100.3MB in the end (delta: -38.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 455.64ms. Allocated memory is still 134.2MB. Free memory was 99.4MB in the beginning and 81.4MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 134.2MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:30:25,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:30:28,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:30:28,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-21 18:30:28,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:30:28,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:30:28,337 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:30:28,338 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:30:28,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:30:28,340 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:30:28,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:30:28,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:30:28,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:30:28,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:30:28,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:30:28,349 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 18:30:28,350 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 18:30:28,350 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:30:28,351 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 18:30:28,351 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:30:28,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:30:28,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:30:28,353 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:30:28,354 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:30:28,354 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:30:28,355 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:30:28,355 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-21 18:30:28,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:30:28,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:30:28,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:30:28,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:30:28,358 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:30:28,358 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-21 18:30:28,358 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 18:30:28,359 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:30:28,359 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-21 18:30:28,359 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 18:30:28,360 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_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874c22c299d735a6f05b6f1a9ad4620ab8282997794570fca1e7032194d6643c [2023-11-21 18:30:28,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:30:28,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:30:28,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:30:28,825 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:30:28,826 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:30:28,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-21 18:30:32,055 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:30:32,548 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:30:32,548 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_53_bad.i [2023-11-21 18:30:32,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data/111853394/b701c0e21f2b48e8b2d6681fd6daa982/FLAG7503034ad [2023-11-21 18:30:32,600 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/data/111853394/b701c0e21f2b48e8b2d6681fd6daa982 [2023-11-21 18:30:32,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:30:32,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:30:32,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:30:32,613 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:30:32,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:30:32,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:30:32" (1/1) ... [2023-11-21 18:30:32,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efb350c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:32, skipping insertion in model container [2023-11-21 18:30:32,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:30:32" (1/1) ... [2023-11-21 18:30:32,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:30:33,165 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:30:33,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:30:33,892 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:30:33,935 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 18:30:34,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:30:34,232 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:34,232 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:34,232 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:34,232 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:34,232 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:34,233 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 18:30:34,241 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:30:34,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34 WrapperNode [2023-11-21 18:30:34,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:30:34,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:30:34,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:30:34,243 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:30:34,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,344 INFO L138 Inliner]: procedures = 508, calls = 67, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 56 [2023-11-21 18:30:34,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:30:34,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:30:34,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:30:34,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:30:34,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,375 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:30:34,401 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:30:34,401 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:30:34,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:30:34,402 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:30:34,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:30:34,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:30:34,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 18:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 18:30:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 18:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 18:30:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 18:30:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 18:30:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:30:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:30:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 18:30:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 18:30:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-21 18:30:34,679 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:30:34,682 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:30:34,882 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:30:34,944 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:30:34,944 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:30:34,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:30:34 BoogieIcfgContainer [2023-11-21 18:30:34,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:30:34,947 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:30:34,947 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:30:34,958 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:30:34,958 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:30:34" (1/1) ... [2023-11-21 18:30:34,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:30:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:30:35,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-21 18:30:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-21 18:30:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 18:30:35,032 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:30:35,033 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-21 18:30:35,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/cvc4 [2023-11-21 18:30:35,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-21 18:30:35,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-21 18:30:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:35,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:30:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:35,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:30:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:30:35,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/bin/ukojak-verify-i0I2FZA1j2/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-21 18:30:35,553 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-21 18:30:35,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:30:35 ImpRootNode [2023-11-21 18:30:35,601 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:30:35,604 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:30:35,604 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:30:35,604 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:30:35,605 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:30:34" (3/4) ... [2023-11-21 18:30:35,607 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 18:30:35,608 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:30:35,609 INFO L158 Benchmark]: Toolchain (without parser) took 3002.48ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 45.4MB in the beginning and 31.5MB in the end (delta: 13.9MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2023-11-21 18:30:35,610 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:30:35,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1629.93ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2023-11-21 18:30:35,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.31ms. Allocated memory is still 88.1MB. Free memory was 43.8MB in the beginning and 40.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 18:30:35,613 INFO L158 Benchmark]: Boogie Preprocessor took 53.05ms. Allocated memory is still 88.1MB. Free memory was 40.5MB in the beginning and 38.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:30:35,614 INFO L158 Benchmark]: RCFGBuilder took 545.23ms. Allocated memory is still 88.1MB. Free memory was 38.5MB in the beginning and 48.8MB in the end (delta: -10.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2023-11-21 18:30:35,615 INFO L158 Benchmark]: CodeCheck took 653.64ms. Allocated memory is still 88.1MB. Free memory was 48.8MB in the beginning and 32.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:30:35,615 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 88.1MB. Free memory was 32.0MB in the beginning and 31.5MB in the end (delta: 495.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:30:35,628 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: 0.6s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s 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: 1587]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_53_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_53b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_53c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_53d_badSink(data) [L1587] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 73.4MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1629.93ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 45.2MB in the beginning and 43.8MB in the end (delta: 1.4MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.31ms. Allocated memory is still 88.1MB. Free memory was 43.8MB in the beginning and 40.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.05ms. Allocated memory is still 88.1MB. Free memory was 40.5MB in the beginning and 38.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 545.23ms. Allocated memory is still 88.1MB. Free memory was 38.5MB in the beginning and 48.8MB in the end (delta: -10.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * CodeCheck took 653.64ms. Allocated memory is still 88.1MB. Free memory was 48.8MB in the beginning and 32.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 88.1MB. Free memory was 32.0MB in the beginning and 31.5MB in the end (delta: 495.9kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 18:30:35,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45b4eec6-def5-4c96-a54b-5c7a8c5c60bb/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