./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:00:52,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:00:53,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 04:00:53,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:00:53,038 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 04:00:53,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:00:53,066 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:00:53,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:00:53,067 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:00:53,068 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:00:53,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:00:53,069 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:00:53,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:00:53,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:00:53,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:00:53,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:00:53,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:00:53,073 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:00:53,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:00:53,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:00:53,074 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:00:53,075 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:00:53,076 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:00:53,076 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:00:53,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:00:53,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:00:53,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:00:53,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:00:53,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:00:53,079 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 04:00:53,080 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:00:53,080 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:00:53,081 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_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc [2023-11-19 04:00:53,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:00:53,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:00:53,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:00:53,435 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:00:53,436 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:00:53,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2023-11-19 04:00:56,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:00:57,093 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:00:57,100 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2023-11-19 04:00:57,135 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data/d58f8587c/bb477b6adb0a47b1a33673b30ef823ff/FLAG5cc3f9f34 [2023-11-19 04:00:57,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data/d58f8587c/bb477b6adb0a47b1a33673b30ef823ff [2023-11-19 04:00:57,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:00:57,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:00:57,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:00:57,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:00:57,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:00:57,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:00:57" (1/1) ... [2023-11-19 04:00:57,170 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78ec8eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:57, skipping insertion in model container [2023-11-19 04:00:57,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:00:57" (1/1) ... [2023-11-19 04:00:57,265 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:00:57,693 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:00:58,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:00:58,241 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:00:58,280 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:00:58,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:00:58,500 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:00:58,500 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:00:58,501 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:00:58,501 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:00:58,501 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:00:58,501 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:00:58,509 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:00:58,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58 WrapperNode [2023-11-19 04:00:58,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:00:58,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:00:58,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:00:58,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:00:58,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,597 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-11-19 04:00:58,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:00:58,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:00:58,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:00:58,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:00:58,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:00:58,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:00:58,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:00:58,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:00:58,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:00:58" (1/1) ... [2023-11-19 04:00:58,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:00:58,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:00:58,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:00:58,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:00:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:00:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:00:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:00:58,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:00:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:00:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:00:58,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:00:58,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:00:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:00:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:00:58,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:00:58,970 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:00:58,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:00:59,120 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:00:59,167 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:00:59,169 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:00:59,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:00:59 BoogieIcfgContainer [2023-11-19 04:00:59,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:00:59,176 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:00:59,176 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:00:59,187 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:00:59,187 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:00:59" (1/1) ... [2023-11-19 04:00:59,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:00:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:00:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:00:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:00:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:00:59,247 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:00:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:00:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:59,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:00:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:59,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:00:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:00:59,615 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:00:59,652 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated [2023-11-19 04:00:59,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:00:59 ImpRootNode [2023-11-19 04:00:59,657 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:00:59,658 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:00:59,658 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:00:59,659 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:00:59,659 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:00:59" (3/4) ... [2023-11-19 04:00:59,662 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:00:59,663 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:00:59,664 INFO L158 Benchmark]: Toolchain (without parser) took 2503.51ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 77.3MB in the beginning and 135.2MB in the end (delta: -57.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:00:59,665 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 127.9MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:00:59,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1348.13ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 77.0MB in the beginning and 107.2MB in the end (delta: -30.2MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-11-19 04:00:59,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.94ms. Allocated memory is still 176.2MB. Free memory was 107.2MB in the beginning and 104.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:00:59,667 INFO L158 Benchmark]: Boogie Preprocessor took 69.92ms. Allocated memory is still 176.2MB. Free memory was 104.9MB in the beginning and 103.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:00:59,668 INFO L158 Benchmark]: RCFGBuilder took 506.53ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 87.1MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:00:59,669 INFO L158 Benchmark]: CodeCheck took 481.10ms. Allocated memory is still 176.2MB. Free memory was 87.1MB in the beginning and 135.2MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:00:59,669 INFO L158 Benchmark]: Witness Printer took 5.05ms. Allocated memory is still 176.2MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:00:59,673 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, 0.1s 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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)=28, argc=28, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_18_bad() [L1550] int data; [L1551] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1568] data-- 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 0.35ms. Allocated memory is still 127.9MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1348.13ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 77.0MB in the beginning and 107.2MB in the end (delta: -30.2MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.94ms. Allocated memory is still 176.2MB. Free memory was 107.2MB in the beginning and 104.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.92ms. Allocated memory is still 176.2MB. Free memory was 104.9MB in the beginning and 103.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 506.53ms. Allocated memory is still 176.2MB. Free memory was 103.0MB in the beginning and 87.1MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 481.10ms. Allocated memory is still 176.2MB. Free memory was 87.1MB in the beginning and 135.2MB in the end (delta: -48.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.05ms. Allocated memory is still 176.2MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:00:59,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:01:02,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:01:02,646 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 04:01:02,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:01:02,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:01:02,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:01:02,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:01:02,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:01:02,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:01:02,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:01:02,708 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:01:02,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:01:02,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:01:02,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:01:02,711 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:01:02,712 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:01:02,712 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:01:02,712 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:01:02,713 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:01:02,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:01:02,714 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:01:02,714 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:01:02,715 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:01:02,715 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:01:02,715 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:01:02,716 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 04:01:02,716 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:01:02,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:01:02,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:01:02,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:01:02,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:01:02,719 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:01:02,720 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:01:02,720 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:01:02,721 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 04:01:02,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:01:02,721 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_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b731b3e45cc745fc26f764e451c6f49e1c269922dce2bfc9965f3cdd36e32cc [2023-11-19 04:01:03,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:01:03,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:01:03,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:01:03,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:01:03,142 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:01:03,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2023-11-19 04:01:06,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:01:06,681 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:01:06,681 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_18_bad.i [2023-11-19 04:01:06,722 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data/1b1691166/72d3accc4840495baffe7e38a4e86030/FLAGe217dd04c [2023-11-19 04:01:06,742 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/data/1b1691166/72d3accc4840495baffe7e38a4e86030 [2023-11-19 04:01:06,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:01:06,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:01:06,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:01:06,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:01:06,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:01:06,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:01:06" (1/1) ... [2023-11-19 04:01:06,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c31686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:06, skipping insertion in model container [2023-11-19 04:01:06,759 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:01:06" (1/1) ... [2023-11-19 04:01:06,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:01:07,253 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:01:07,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:01:07,879 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:01:07,908 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:01:07,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:01:08,169 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:01:08,170 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:01:08,170 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:01:08,170 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:01:08,170 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:01:08,171 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:01:08,180 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:01:08,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08 WrapperNode [2023-11-19 04:01:08,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:01:08,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:01:08,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:01:08,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:01:08,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,301 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-19 04:01:08,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:01:08,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:01:08,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:01:08,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:01:08,317 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,340 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,369 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:01:08,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:01:08,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:01:08,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:01:08,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:08,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:01:08,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:01:08,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:01:08,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:01:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:01:08,470 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:01:08,470 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:01:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:01:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:01:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:01:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:01:08,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:01:08,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:01:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:01:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:01:08,662 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:01:08,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:01:08,918 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:01:08,985 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:01:08,991 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:01:08,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:01:08 BoogieIcfgContainer [2023-11-19 04:01:08,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:01:09,000 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:01:09,000 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:01:09,014 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:01:09,015 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:01:08" (1/1) ... [2023-11-19 04:01:09,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:01:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:01:09,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:01:09,107 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:01:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:01:09,121 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:01:09,121 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:01:09,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 04:01:09,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:01:09,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 04:01:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:01:09,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:01:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:01:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:01:09,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:01:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:01:09,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-19 04:01:09,714 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:01:09,755 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated [2023-11-19 04:01:09,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:01:09 ImpRootNode [2023-11-19 04:01:09,762 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:01:09,764 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:01:09,765 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:01:09,765 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:01:09,765 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:01:08" (3/4) ... [2023-11-19 04:01:09,768 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:01:09,769 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:01:09,771 INFO L158 Benchmark]: Toolchain (without parser) took 3021.82ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 43.4MB in the beginning and 41.2MB in the end (delta: 2.1MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2023-11-19 04:01:09,772 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 71.3MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:01:09,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1431.45ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 43.2MB in the beginning and 28.6MB in the end (delta: 14.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2023-11-19 04:01:09,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.56ms. Allocated memory is still 104.9MB. Free memory was 28.6MB in the beginning and 79.0MB in the end (delta: -50.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 04:01:09,775 INFO L158 Benchmark]: Boogie Preprocessor took 73.53ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:01:09,776 INFO L158 Benchmark]: RCFGBuilder took 619.14ms. Allocated memory is still 104.9MB. Free memory was 76.9MB in the beginning and 58.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:01:09,777 INFO L158 Benchmark]: CodeCheck took 762.63ms. Allocated memory is still 104.9MB. Free memory was 58.7MB in the beginning and 41.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:01:09,777 INFO L158 Benchmark]: Witness Printer took 5.44ms. Allocated memory is still 104.9MB. Free memory was 41.6MB in the beginning and 41.2MB in the end (delta: 373.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:01:09,790 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: 1568]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_postdec_18_bad() [L1550] int data; [L1551] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1568] data-- 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 0.39ms. Allocated memory is still 71.3MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1431.45ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 43.2MB in the beginning and 28.6MB in the end (delta: 14.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.56ms. Allocated memory is still 104.9MB. Free memory was 28.6MB in the beginning and 79.0MB in the end (delta: -50.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.53ms. Allocated memory is still 104.9MB. Free memory was 79.0MB in the beginning and 76.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 619.14ms. Allocated memory is still 104.9MB. Free memory was 76.9MB in the beginning and 58.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 762.63ms. Allocated memory is still 104.9MB. Free memory was 58.7MB in the beginning and 41.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.44ms. Allocated memory is still 104.9MB. Free memory was 41.6MB in the beginning and 41.2MB in the end (delta: 373.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:01:09,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23d0351-13aa-4a31-8ed1-ad60afc9e609/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