./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_42_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash afc1bd4fc34914887c296693ed71988d0af11205a8c6ccdc601bdcead6b103ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:11:16,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:11:16,830 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:11:16,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:11:16,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:11:16,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:11:16,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:11:16,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:11:16,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:11:16,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:11:16,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:11:16,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:11:16,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:11:16,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:11:16,898 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:11:16,898 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:11:16,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:11:16,899 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:11:16,899 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:11:16,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:11:16,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:11:16,901 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:11:16,901 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:11:16,902 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:11:16,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:11:16,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:11:16,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:11:16,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:11:16,904 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:11:16,904 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:11:16,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:11:16,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:11:16,905 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_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afc1bd4fc34914887c296693ed71988d0af11205a8c6ccdc601bdcead6b103ab [2023-11-23 20:11:17,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:11:17,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:11:17,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:11:17,196 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:11:17,196 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:11:17,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_42_bad.i [2023-11-23 20:11:20,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:11:20,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:11:20,800 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_42_bad.i [2023-11-23 20:11:20,836 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data/8fc149391/f4f460a2b2cc4ce48e6dd7b24827f06c/FLAG470f06316 [2023-11-23 20:11:20,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data/8fc149391/f4f460a2b2cc4ce48e6dd7b24827f06c [2023-11-23 20:11:20,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:11:20,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:11:20,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:11:20,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:11:20,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:11:20,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:11:20" (1/1) ... [2023-11-23 20:11:20,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72c17ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:20, skipping insertion in model container [2023-11-23 20:11:20,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:11:20" (1/1) ... [2023-11-23 20:11:20,962 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:11:21,482 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:11:22,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:11:22,184 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:11:22,218 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:11:22,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:11:22,405 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:22,412 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:22,412 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:22,413 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:22,413 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:22,413 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:22,422 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:11:22,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22 WrapperNode [2023-11-23 20:11:22,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:11:22,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:11:22,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:11:22,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:11:22,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,504 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-23 20:11:22,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:11:22,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:11:22,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:11:22,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:11:22,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,521 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:11:22,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:11:22,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:11:22,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:11:22,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:22" (1/1) ... [2023-11-23 20:11:22,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:11:22,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:11:22,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:11:22,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:11:22,618 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:11:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:11:22,619 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:11:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:11:22,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:11:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:11:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:11:22,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:11:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:11:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:11:22,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:11:22,778 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:11:22,781 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:11:22,977 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:11:23,038 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:11:23,038 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:11:23,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:23 BoogieIcfgContainer [2023-11-23 20:11:23,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:11:23,041 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:11:23,041 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:11:23,051 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:11:23,052 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:23" (1/1) ... [2023-11-23 20:11:23,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:11:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:11:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:11:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:11:23,121 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:23,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:11:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:23,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:11:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:23,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:11:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:23,506 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:11:23,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:11:23 ImpRootNode [2023-11-23 20:11:23,548 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:11:23,551 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:11:23,551 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:11:23,552 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:11:23,552 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:23" (3/4) ... [2023-11-23 20:11:23,554 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:11:23,556 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:11:23,557 INFO L158 Benchmark]: Toolchain (without parser) took 2693.53ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 75.6MB in the beginning and 115.1MB in the end (delta: -39.5MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-11-23 20:11:23,558 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:11:23,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1559.22ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 75.3MB in the beginning and 102.0MB in the end (delta: -26.7MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2023-11-23 20:11:23,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.26ms. Allocated memory is still 174.1MB. Free memory was 102.0MB in the beginning and 99.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:11:23,561 INFO L158 Benchmark]: Boogie Preprocessor took 32.58ms. Allocated memory is still 174.1MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:11:23,562 INFO L158 Benchmark]: RCFGBuilder took 501.47ms. Allocated memory is still 174.1MB. Free memory was 97.1MB in the beginning and 134.0MB in the end (delta: -36.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 20:11:23,562 INFO L158 Benchmark]: CodeCheck took 507.20ms. Allocated memory is still 174.1MB. Free memory was 133.0MB in the beginning and 115.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:11:23,563 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 174.1MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:11:23,566 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, 17 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, 9 NumberOfCodeBlocks, 9 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554. 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); [L1577] 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) [L1577] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=13, argc=13, argv={18:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] CALL CWE191_Integer_Underflow__int_fgets_multiply_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] EXPR data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1550-L1560] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1561] return data; [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1568] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, 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 0.30ms. Allocated memory is still 123.7MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1559.22ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 75.3MB in the beginning and 102.0MB in the end (delta: -26.7MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.26ms. Allocated memory is still 174.1MB. Free memory was 102.0MB in the beginning and 99.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.58ms. Allocated memory is still 174.1MB. Free memory was 99.2MB in the beginning and 97.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 501.47ms. Allocated memory is still 174.1MB. Free memory was 97.1MB in the beginning and 134.0MB in the end (delta: -36.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 507.20ms. Allocated memory is still 174.1MB. Free memory was 133.0MB in the beginning and 115.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 174.1MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:11:23,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash afc1bd4fc34914887c296693ed71988d0af11205a8c6ccdc601bdcead6b103ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:11:26,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:11:26,509 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:11:26,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:11:26,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:11:26,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:11:26,564 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:11:26,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:11:26,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:11:26,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:11:26,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:11:26,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:11:26,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:11:26,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:11:26,575 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:11:26,575 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:11:26,576 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:11:26,576 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:11:26,577 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:11:26,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:11:26,578 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:11:26,579 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:11:26,580 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:11:26,580 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:11:26,581 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:11:26,581 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:11:26,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:11:26,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:11:26,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:11:26,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:11:26,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:11:26,585 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:11:26,585 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:11:26,586 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:11:26,586 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:11:26,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:11:26,587 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_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afc1bd4fc34914887c296693ed71988d0af11205a8c6ccdc601bdcead6b103ab [2023-11-23 20:11:27,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:11:27,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:11:27,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:11:27,099 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:11:27,100 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:11:27,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_42_bad.i [2023-11-23 20:11:30,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:11:30,661 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:11:30,661 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_42_bad.i [2023-11-23 20:11:30,698 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data/696d6a90b/fa42eeb74bc94c5eb716208384986d0f/FLAGfd10e2f11 [2023-11-23 20:11:30,717 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/data/696d6a90b/fa42eeb74bc94c5eb716208384986d0f [2023-11-23 20:11:30,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:11:30,725 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:11:30,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:11:30,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:11:30,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:11:30,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:11:30" (1/1) ... [2023-11-23 20:11:30,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b755be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:30, skipping insertion in model container [2023-11-23 20:11:30,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:11:30" (1/1) ... [2023-11-23 20:11:30,827 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:11:31,313 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:11:32,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:11:32,315 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:11:32,348 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:11:32,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:11:32,672 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:32,672 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:32,672 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:32,673 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:32,673 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:32,673 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:11:32,683 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:11:32,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32 WrapperNode [2023-11-23 20:11:32,684 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:11:32,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:11:32,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:11:32,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:11:32,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,796 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2023-11-23 20:11:32,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:11:32,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:11:32,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:11:32,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:11:32,808 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:11:32,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:11:32,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:11:32,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:11:32,875 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:11:32" (1/1) ... [2023-11-23 20:11:32,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:11:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:11:32,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:11:32,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:11:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:11:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:11:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:11:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:11:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:11:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:11:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:11:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:11:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:11:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:11:32,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:11:33,184 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:11:33,186 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:11:33,342 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:11:33,435 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:11:33,435 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:11:33,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:33 BoogieIcfgContainer [2023-11-23 20:11:33,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:11:33,440 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:11:33,440 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:11:33,453 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:11:33,454 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:33" (1/1) ... [2023-11-23 20:11:33,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:11:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:11:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-23 20:11:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-23 20:11:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:11:33,564 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:11:33,565 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:11:33,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:11:33,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:11:33,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:11:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:33,889 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:11:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:34,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:11:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:11:34,211 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-23 20:11:34,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-23 20:11:34,214 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:11:34,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:11:34 ImpRootNode [2023-11-23 20:11:34,263 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:11:34,265 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:11:34,266 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:11:34,267 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:11:34,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:11:33" (3/4) ... [2023-11-23 20:11:34,270 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:11:34,271 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:11:34,272 INFO L158 Benchmark]: Toolchain (without parser) took 3547.52ms. Allocated memory is still 109.1MB. Free memory was 81.8MB in the beginning and 49.7MB in the end (delta: 32.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2023-11-23 20:11:34,273 INFO L158 Benchmark]: CDTParser took 0.64ms. Allocated memory is still 65.0MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:11:34,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1956.19ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 43.7MB in the end (delta: 37.8MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2023-11-23 20:11:34,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.43ms. Allocated memory is still 109.1MB. Free memory was 43.7MB in the beginning and 40.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:11:34,277 INFO L158 Benchmark]: Boogie Preprocessor took 70.36ms. Allocated memory is still 109.1MB. Free memory was 40.6MB in the beginning and 38.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:11:34,278 INFO L158 Benchmark]: RCFGBuilder took 566.22ms. Allocated memory is still 109.1MB. Free memory was 38.6MB in the beginning and 67.2MB in the end (delta: -28.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 20:11:34,279 INFO L158 Benchmark]: CodeCheck took 823.42ms. Allocated memory is still 109.1MB. Free memory was 67.2MB in the beginning and 50.3MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:11:34,280 INFO L158 Benchmark]: Witness Printer took 6.03ms. Allocated memory is still 109.1MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:11:34,294 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554. 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); [L1577] 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) [L1577] 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] [L1578] CALL CWE191_Integer_Underflow__int_fgets_multiply_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] EXPR data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1550-L1560] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1561] return data; [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1568] COND TRUE data < 0 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] [L1570] data * 2 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 0.64ms. Allocated memory is still 65.0MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1956.19ms. Allocated memory is still 109.1MB. Free memory was 81.4MB in the beginning and 43.7MB in the end (delta: 37.8MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 111.43ms. Allocated memory is still 109.1MB. Free memory was 43.7MB in the beginning and 40.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.36ms. Allocated memory is still 109.1MB. Free memory was 40.6MB in the beginning and 38.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.22ms. Allocated memory is still 109.1MB. Free memory was 38.6MB in the beginning and 67.2MB in the end (delta: -28.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 823.42ms. Allocated memory is still 109.1MB. Free memory was 67.2MB in the beginning and 50.3MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.03ms. Allocated memory is still 109.1MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:11:34,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3dab8bc-ef5c-49d9-bae1-fbe686cc4cb9/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample