./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_41_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_41_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 21ff04a61b981c145eb2eb054e3d306e60567d5d2ca4b5cae90d44f67d7eb3c4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:04:29,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:04:29,614 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 04:04:29,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:04:29,623 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 04:04:29,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:04:29,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:04:29,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:04:29,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:04:29,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:04:29,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:04:29,672 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:04:29,672 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:04:29,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:04:29,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:04:29,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:04:29,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:04:29,675 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:04:29,676 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:04:29,676 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:04:29,676 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:04:29,677 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:04:29,677 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:04:29,678 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:04:29,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:04:29,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:04:29,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:04:29,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:04:29,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:04:29,681 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 04:04:29,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:04:29,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:04:29,682 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_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21ff04a61b981c145eb2eb054e3d306e60567d5d2ca4b5cae90d44f67d7eb3c4 [2023-11-19 04:04:30,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:04:30,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:04:30,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:04:30,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:04:30,078 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:04:30,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_41_bad.i [2023-11-19 04:04:33,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:04:33,440 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:04:33,441 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_41_bad.i [2023-11-19 04:04:33,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data/c9f63159c/78c1184f0ff74d5c94b5658278c7d304/FLAGb1f32d612 [2023-11-19 04:04:33,484 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data/c9f63159c/78c1184f0ff74d5c94b5658278c7d304 [2023-11-19 04:04:33,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:04:33,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:04:33,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:04:33,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:04:33,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:04:33,496 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:04:33" (1/1) ... [2023-11-19 04:04:33,497 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a238ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:33, skipping insertion in model container [2023-11-19 04:04:33,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:04:33" (1/1) ... [2023-11-19 04:04:33,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:04:34,042 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:04:34,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:04:34,695 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:04:34,724 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:04:34,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:04:34,975 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:34,976 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:34,976 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:34,976 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:34,976 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:34,977 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:34,985 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:04:34,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34 WrapperNode [2023-11-19 04:04:34,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:04:34,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:04:34,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:04:34,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:04:34,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,081 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 54 [2023-11-19 04:04:35,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:04:35,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:04:35,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:04:35,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:04:35,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,143 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:04:35,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:04:35,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:04:35,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:04:35,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:34" (1/1) ... [2023-11-19 04:04:35,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:04:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:04:35,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:04:35,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:04:35,235 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:04:35,235 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:04:35,235 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:04:35,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:04:35,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:04:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:04:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:04:35,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:04:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:04:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:04:35,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:04:35,391 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:04:35,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:04:35,572 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:04:35,621 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:04:35,621 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:04:35,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:04:35 BoogieIcfgContainer [2023-11-19 04:04:35,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:04:35,636 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:04:35,636 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:04:35,647 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:04:35,648 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:04:35" (1/1) ... [2023-11-19 04:04:35,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:04:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:04:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:04:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:04:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:04:35,740 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:04:35,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:04:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:35,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:04:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:36,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:04:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:36,109 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:04:36,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:04:36 ImpRootNode [2023-11-19 04:04:36,137 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:04:36,138 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:04:36,138 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:04:36,138 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:04:36,139 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:04:35" (3/4) ... [2023-11-19 04:04:36,141 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:04:36,142 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:04:36,143 INFO L158 Benchmark]: Toolchain (without parser) took 2654.38ms. Allocated memory is still 144.7MB. Free memory was 101.9MB in the beginning and 100.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:04:36,143 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 109.1MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:04:36,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1495.99ms. Allocated memory is still 144.7MB. Free memory was 101.5MB in the beginning and 62.3MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-19 04:04:36,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.48ms. Allocated memory is still 144.7MB. Free memory was 62.3MB in the beginning and 59.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:04:36,146 INFO L158 Benchmark]: Boogie Preprocessor took 60.47ms. Allocated memory is still 144.7MB. Free memory was 59.4MB in the beginning and 57.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:04:36,146 INFO L158 Benchmark]: RCFGBuilder took 491.15ms. Allocated memory is still 144.7MB. Free memory was 57.7MB in the beginning and 43.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:04:36,147 INFO L158 Benchmark]: CodeCheck took 500.94ms. Allocated memory is still 144.7MB. Free memory was 43.1MB in the beginning and 101.5MB in the end (delta: -58.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:04:36,148 INFO L158 Benchmark]: Witness Printer took 4.56ms. Allocated memory is still 144.7MB. Free memory was 101.5MB in the beginning and 100.8MB in the end (delta: 793.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:04:36,151 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1563. 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); [L1575] 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) [L1575] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=28, argc=28, argv={29:27}, argv={29:27}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_41_bad() [L1557] int data; [L1558] data = 0 [L1560] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1563] EXPR data = atoi(inputBuffer) [L1560] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559-L1569] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1570] CALL badSink(data) [L1551] 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 0.34ms. Allocated memory is still 109.1MB. Free memory is still 80.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1495.99ms. Allocated memory is still 144.7MB. Free memory was 101.5MB in the beginning and 62.3MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.48ms. Allocated memory is still 144.7MB. Free memory was 62.3MB in the beginning and 59.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.47ms. Allocated memory is still 144.7MB. Free memory was 59.4MB in the beginning and 57.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.15ms. Allocated memory is still 144.7MB. Free memory was 57.7MB in the beginning and 43.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 500.94ms. Allocated memory is still 144.7MB. Free memory was 43.1MB in the beginning and 101.5MB in the end (delta: -58.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.56ms. Allocated memory is still 144.7MB. Free memory was 101.5MB in the beginning and 100.8MB in the end (delta: 793.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:04:36,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_41_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 21ff04a61b981c145eb2eb054e3d306e60567d5d2ca4b5cae90d44f67d7eb3c4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:04:38,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:04:39,052 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 04:04:39,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:04:39,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:04:39,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:04:39,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:04:39,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:04:39,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:04:39,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:04:39,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:04:39,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:04:39,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:04:39,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:04:39,101 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:04:39,102 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:04:39,103 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:04:39,103 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:04:39,104 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:04:39,104 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:04:39,105 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:04:39,106 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:04:39,106 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:04:39,107 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:04:39,107 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:04:39,108 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 04:04:39,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:04:39,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:04:39,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:04:39,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:04:39,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:04:39,111 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:04:39,112 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:04:39,112 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:04:39,112 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 04:04:39,113 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:04:39,113 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_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21ff04a61b981c145eb2eb054e3d306e60567d5d2ca4b5cae90d44f67d7eb3c4 [2023-11-19 04:04:39,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:04:39,573 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:04:39,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:04:39,578 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:04:39,579 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:04:39,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_41_bad.i [2023-11-19 04:04:42,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:04:43,270 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:04:43,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_41_bad.i [2023-11-19 04:04:43,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data/d559e24e8/c89462ead62e48178d2ab737095c7690/FLAG74e28dc93 [2023-11-19 04:04:43,330 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/data/d559e24e8/c89462ead62e48178d2ab737095c7690 [2023-11-19 04:04:43,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:04:43,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:04:43,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:04:43,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:04:43,347 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:04:43,348 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:04:43" (1/1) ... [2023-11-19 04:04:43,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a55318f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:43, skipping insertion in model container [2023-11-19 04:04:43,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:04:43" (1/1) ... [2023-11-19 04:04:43,437 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:04:43,843 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:04:44,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:04:44,750 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:04:44,801 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:04:44,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:04:45,105 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:45,105 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:45,106 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:45,106 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:45,106 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:45,106 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:04:45,115 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:04:45,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45 WrapperNode [2023-11-19 04:04:45,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:04:45,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:04:45,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:04:45,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:04:45,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,232 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53 [2023-11-19 04:04:45,232 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:04:45,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:04:45,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:04:45,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:04:45,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,290 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:04:45,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:04:45,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:04:45,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:04:45,312 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:04:45,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:04:45,360 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:04:45,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:04:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:04:45,408 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:04:45,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:04:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:04:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:04:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:04:45,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:04:45,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:04:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:04:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:04:45,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:04:45,602 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:04:45,604 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:04:45,841 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:04:45,895 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:04:45,895 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:04:45,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:04:45 BoogieIcfgContainer [2023-11-19 04:04:45,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:04:45,901 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:04:45,901 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:04:45,941 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:04:45,942 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:04:45" (1/1) ... [2023-11-19 04:04:45,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:04:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:04:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:04:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:04:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:04:46,042 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:04:46,042 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:04:46,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 04:04:46,049 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:04:46,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 04:04:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:46,327 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:04:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:46,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:04:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:04:46,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:04:46,653 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:04:46,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:04:46 ImpRootNode [2023-11-19 04:04:46,695 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:04:46,697 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:04:46,697 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:04:46,697 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:04:46,698 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:04:45" (3/4) ... [2023-11-19 04:04:46,701 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:04:46,702 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:04:46,703 INFO L158 Benchmark]: Toolchain (without parser) took 3365.51ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 55.6MB in the end (delta: 17.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-11-19 04:04:46,703 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 60.8MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:04:46,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1775.76ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 63.0MB in the end (delta: 9.5MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2023-11-19 04:04:46,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 115.11ms. Allocated memory is still 100.7MB. Free memory was 63.0MB in the beginning and 60.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:04:46,706 INFO L158 Benchmark]: Boogie Preprocessor took 76.45ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 57.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:04:46,707 INFO L158 Benchmark]: RCFGBuilder took 589.45ms. Allocated memory is still 100.7MB. Free memory was 57.9MB in the beginning and 40.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:04:46,708 INFO L158 Benchmark]: CodeCheck took 793.91ms. Allocated memory is still 100.7MB. Free memory was 40.7MB in the beginning and 55.6MB in the end (delta: -14.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:04:46,708 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 100.7MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:04:46,718 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: 0.7s, 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, 0.1s 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: 1551]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1563. 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); [L1575] 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) [L1575] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1576] CALL CWE191_Integer_Underflow__int_fgets_sub_41_bad() [L1557] int data; [L1558] data = 0 [L1560] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1561] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1563] EXPR data = atoi(inputBuffer) [L1560] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559-L1569] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1570] CALL badSink(data) [L1551] 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 0.62ms. Allocated memory is still 60.8MB. Free memory was 36.4MB in the beginning and 36.3MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1775.76ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 63.0MB in the end (delta: 9.5MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 115.11ms. Allocated memory is still 100.7MB. Free memory was 63.0MB in the beginning and 60.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.45ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 57.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 589.45ms. Allocated memory is still 100.7MB. Free memory was 57.9MB in the beginning and 40.7MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 793.91ms. Allocated memory is still 100.7MB. Free memory was 40.7MB in the beginning and 55.6MB in the end (delta: -14.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 100.7MB. Free memory is still 55.6MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:04:46,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a6dd949-bdf6-46e7-acb1-0942cc9ec406/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample