./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/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_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/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_20687de5-0653-4748-8cad-e114c8817e78/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 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:24:28,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:24:28,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:24:28,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:24:28,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:24:28,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:24:28,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:24:28,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:24:28,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:24:28,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:24:28,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:24:28,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:24:28,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:24:28,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:24:28,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:24:28,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:24:28,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:24:28,792 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:24:28,793 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:24:28,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:24:28,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:24:28,795 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:24:28,795 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:24:28,796 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:24:28,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:24:28,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:24:28,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:24:28,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:24:28,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:24:28,799 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:24:28,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:24:28,800 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:24:28,800 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_20687de5-0653-4748-8cad-e114c8817e78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 [2023-11-23 20:24:29,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:24:29,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:24:29,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:24:29,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:24:29,112 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:24:29,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-23 20:24:32,260 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:24:32,767 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:24:32,768 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-23 20:24:32,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data/566ff16d8/614e35f72c0445a983dc2dd2b22d15ec/FLAGdf956e7da [2023-11-23 20:24:32,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data/566ff16d8/614e35f72c0445a983dc2dd2b22d15ec [2023-11-23 20:24:32,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:24:32,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:24:32,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:24:32,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:24:32,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:24:32,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:24:32" (1/1) ... [2023-11-23 20:24:32,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5b1aa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:32, skipping insertion in model container [2023-11-23 20:24:32,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:24:32" (1/1) ... [2023-11-23 20:24:32,906 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:24:33,315 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:24:33,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:24:33,927 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:24:33,967 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:24:34,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:24:34,225 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:34,225 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:34,225 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:34,226 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:34,226 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:34,226 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:34,234 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:24:34,235 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34 WrapperNode [2023-11-23 20:24:34,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:24:34,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:24:34,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:24:34,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:24:34,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,330 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2023-11-23 20:24:34,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:24:34,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:24:34,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:24:34,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:24:34,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,369 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,389 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:24:34,394 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:24:34,394 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:24:34,394 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:24:34,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:24:34,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:24:34,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:24:34,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:24:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:24:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:24:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:24:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:24:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:24:34,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:24:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:24:34,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:24:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:24:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:24:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:24:34,676 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:24:34,678 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:24:34,910 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:24:34,973 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:24:34,974 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:24:34,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:24:34 BoogieIcfgContainer [2023-11-23 20:24:34,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:24:34,978 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:24:34,978 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:24:34,989 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:24:34,989 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:24:34" (1/1) ... [2023-11-23 20:24:34,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:24:35,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:24:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:24:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:24:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:24:35,059 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:24:35,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:24:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:35,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:24:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:35,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:24:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:35,396 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:24:35,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:24:35 ImpRootNode [2023-11-23 20:24:35,432 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:24:35,434 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:24:35,435 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:24:35,435 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:24:35,435 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:24:34" (3/4) ... [2023-11-23 20:24:35,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:24:35,441 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:24:35,443 INFO L158 Benchmark]: Toolchain (without parser) took 2611.73ms. Allocated memory is still 153.1MB. Free memory was 103.7MB in the beginning and 93.0MB in the end (delta: 10.7MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-11-23 20:24:35,444 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 80.3MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:24:35,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1403.64ms. Allocated memory is still 153.1MB. Free memory was 103.4MB in the beginning and 76.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2023-11-23 20:24:35,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.85ms. Allocated memory is still 153.1MB. Free memory was 76.9MB in the beginning and 73.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:24:35,448 INFO L158 Benchmark]: Boogie Preprocessor took 60.98ms. Allocated memory is still 153.1MB. Free memory was 73.3MB in the beginning and 71.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:24:35,449 INFO L158 Benchmark]: RCFGBuilder took 583.03ms. Allocated memory is still 153.1MB. Free memory was 71.9MB in the beginning and 111.9MB in the end (delta: -40.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2023-11-23 20:24:35,449 INFO L158 Benchmark]: CodeCheck took 453.95ms. Allocated memory is still 153.1MB. Free memory was 111.9MB in the beginning and 93.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:24:35,450 INFO L158 Benchmark]: Witness Printer took 7.30ms. Allocated memory is still 153.1MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:24:35,453 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: 1569]: 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); [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=27, argc=27, argv={28:26}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_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) [L1569] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 80.3MB in the end (delta: 28.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1403.64ms. Allocated memory is still 153.1MB. Free memory was 103.4MB in the beginning and 76.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.85ms. Allocated memory is still 153.1MB. Free memory was 76.9MB in the beginning and 73.3MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.98ms. Allocated memory is still 153.1MB. Free memory was 73.3MB in the beginning and 71.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 583.03ms. Allocated memory is still 153.1MB. Free memory was 71.9MB in the beginning and 111.9MB in the end (delta: -40.0MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * CodeCheck took 453.95ms. Allocated memory is still 153.1MB. Free memory was 111.9MB in the beginning and 93.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 7.30ms. Allocated memory is still 153.1MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:24:35,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/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_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/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_20687de5-0653-4748-8cad-e114c8817e78/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 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:24:38,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:24:38,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:24:38,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:24:38,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:24:38,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:24:38,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:24:38,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:24:38,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:24:38,262 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:24:38,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:24:38,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:24:38,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:24:38,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:24:38,265 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:24:38,265 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:24:38,266 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:24:38,266 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:24:38,267 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:24:38,267 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:24:38,268 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:24:38,268 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:24:38,269 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:24:38,269 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:24:38,270 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:24:38,270 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:24:38,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:24:38,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:24:38,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:24:38,272 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:24:38,272 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:24:38,273 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:24:38,273 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:24:38,273 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:24:38,274 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:24:38,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:24:38,275 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_20687de5-0653-4748-8cad-e114c8817e78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 [2023-11-23 20:24:38,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:24:38,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:24:38,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:24:38,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:24:38,760 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:24:38,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-23 20:24:41,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:24:42,331 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:24:42,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-23 20:24:42,368 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data/b7a2486c5/20780b3c02c04bb99cb0e5130dac2447/FLAG9286cff37 [2023-11-23 20:24:42,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/data/b7a2486c5/20780b3c02c04bb99cb0e5130dac2447 [2023-11-23 20:24:42,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:24:42,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:24:42,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:24:42,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:24:42,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:24:42,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:24:42" (1/1) ... [2023-11-23 20:24:42,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658394c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:42, skipping insertion in model container [2023-11-23 20:24:42,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:24:42" (1/1) ... [2023-11-23 20:24:42,512 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:24:42,892 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:24:43,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:24:43,716 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:24:43,754 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:24:43,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:24:43,972 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:43,973 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:43,973 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:43,973 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:43,973 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:43,973 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:24:43,982 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:24:43,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43 WrapperNode [2023-11-23 20:24:43,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:24:43,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:24:43,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:24:43,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:24:43,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,053 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2023-11-23 20:24:44,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:24:44,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:24:44,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:24:44,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:24:44,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,091 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:24:44,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:24:44,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:24:44,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:24:44,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:24:43" (1/1) ... [2023-11-23 20:24:44,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:24:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:24:44,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:24:44,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:24:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:24:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:24:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:24:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:24:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:24:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:24:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:24:44,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:24:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:24:44,176 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:24:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:24:44,359 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:24:44,362 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:24:44,562 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:24:44,649 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:24:44,649 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:24:44,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:24:44 BoogieIcfgContainer [2023-11-23 20:24:44,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:24:44,652 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:24:44,652 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:24:44,663 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:24:44,664 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:24:44" (1/1) ... [2023-11-23 20:24:44,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:24:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:24:44,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:24:44,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:24:44,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:24:44,733 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:24:44,733 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:24:44,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:24:44,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:24:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:24:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:44,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:24:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:45,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:24:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:24:45,255 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-23 20:24:45,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-23 20:24:45,265 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:24:45,294 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:24:45 ImpRootNode [2023-11-23 20:24:45,294 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:24:45,298 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:24:45,298 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:24:45,299 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:24:45,299 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:24:44" (3/4) ... [2023-11-23 20:24:45,301 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:24:45,302 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:24:45,304 INFO L158 Benchmark]: Toolchain (without parser) took 2906.35ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 48.1MB in the beginning and 45.6MB in the end (delta: 2.5MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2023-11-23 20:24:45,304 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 75.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:24:45,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1582.30ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 47.9MB in the beginning and 61.8MB in the end (delta: -13.9MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2023-11-23 20:24:45,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.06ms. Allocated memory is still 92.3MB. Free memory was 61.8MB in the beginning and 58.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:24:45,307 INFO L158 Benchmark]: Boogie Preprocessor took 37.29ms. Allocated memory is still 92.3MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:24:45,309 INFO L158 Benchmark]: RCFGBuilder took 559.11ms. Allocated memory is still 92.3MB. Free memory was 56.8MB in the beginning and 63.4MB in the end (delta: -6.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-11-23 20:24:45,309 INFO L158 Benchmark]: CodeCheck took 642.04ms. Allocated memory is still 92.3MB. Free memory was 63.4MB in the beginning and 45.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 20:24:45,310 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 92.3MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:24:45,323 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s 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: 1569]: 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); [L1576] 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) [L1576] 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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_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) [L1569] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 75.5MB. Free memory is still 51.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1582.30ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 47.9MB in the beginning and 61.8MB in the end (delta: -13.9MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.06ms. Allocated memory is still 92.3MB. Free memory was 61.8MB in the beginning and 58.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.29ms. Allocated memory is still 92.3MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 559.11ms. Allocated memory is still 92.3MB. Free memory was 56.8MB in the beginning and 63.4MB in the end (delta: -6.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * CodeCheck took 642.04ms. Allocated memory is still 92.3MB. Free memory was 63.4MB in the beginning and 45.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 92.3MB. Free memory is still 45.6MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 20:24:45,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20687de5-0653-4748-8cad-e114c8817e78/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample