./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_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_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/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_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/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_0022ee5e-3cd3-4a81-b6a4-384960a86168/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 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:03:21,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:03:21,744 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-23 20:03:21,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:03:21,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:03:21,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:03:21,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:03:21,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:03:21,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:03:21,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:03:21,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:03:21,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:03:21,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:03:21,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:03:21,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:03:21,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:03:21,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:03:21,803 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:03:21,804 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:03:21,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:03:21,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:03:21,806 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:03:21,807 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:03:21,807 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:03:21,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:03:21,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:03:21,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:03:21,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:03:21,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:03:21,810 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:03:21,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:03:21,812 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:03:21,812 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_0022ee5e-3cd3-4a81-b6a4-384960a86168/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf [2023-11-23 20:03:22,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:03:22,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:03:22,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:03:22,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:03:22,120 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:03:22,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2023-11-23 20:03:25,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:03:25,789 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:03:25,789 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2023-11-23 20:03:25,824 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data/bf891283b/52466b78da6d4f8bbb65601c0e1e8934/FLAG89b1be3dc [2023-11-23 20:03:25,841 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data/bf891283b/52466b78da6d4f8bbb65601c0e1e8934 [2023-11-23 20:03:25,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:03:25,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:03:25,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:03:25,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:03:25,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:03:25,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:03:25" (1/1) ... [2023-11-23 20:03:25,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4877d292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:25, skipping insertion in model container [2023-11-23 20:03:25,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:03:25" (1/1) ... [2023-11-23 20:03:25,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:03:26,359 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:03:26,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:03:26,982 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:03:27,059 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:03:27,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:03:27,342 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:27,342 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:27,342 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:27,342 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:27,343 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:27,343 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:27,351 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:03:27,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27 WrapperNode [2023-11-23 20:03:27,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:03:27,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:03:27,353 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:03:27,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:03:27,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,423 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2023-11-23 20:03:27,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:03:27,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:03:27,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:03:27,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:03:27,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,465 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,483 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,485 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,486 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,489 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:03:27,490 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:03:27,490 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:03:27,490 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:03:27,491 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:03:27,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:03:27,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:03:27,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:03:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:03:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:03:27,578 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:03:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:03:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 20:03:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:03:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:03:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:03:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:03:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:03:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:03:27,738 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:03:27,740 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:03:27,863 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:03:27,911 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:03:27,911 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:03:27,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:27 BoogieIcfgContainer [2023-11-23 20:03:27,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:03:27,914 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:03:27,915 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:03:27,925 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:03:27,925 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:27" (1/1) ... [2023-11-23 20:03:27,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:03:27,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:03:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:03:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:03:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:03:27,986 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:03:27,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:03:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:28,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:03:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:28,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:03:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:28,445 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:03:28,488 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated [2023-11-23 20:03:28,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:03:28 ImpRootNode [2023-11-23 20:03:28,496 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:03:28,501 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:03:28,501 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:03:28,501 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:03:28,502 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:27" (3/4) ... [2023-11-23 20:03:28,507 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:03:28,508 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:03:28,509 INFO L158 Benchmark]: Toolchain (without parser) took 2660.07ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 100.0MB in the beginning and 151.5MB in the end (delta: -51.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:03:28,510 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 151.0MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:03:28,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1500.81ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 99.8MB in the beginning and 129.6MB in the end (delta: -29.8MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-11-23 20:03:28,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.66ms. Allocated memory is still 201.3MB. Free memory was 129.6MB in the beginning and 126.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:03:28,513 INFO L158 Benchmark]: Boogie Preprocessor took 56.27ms. Allocated memory is still 201.3MB. Free memory was 126.8MB in the beginning and 125.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:03:28,515 INFO L158 Benchmark]: RCFGBuilder took 424.21ms. Allocated memory is still 201.3MB. Free memory was 125.5MB in the beginning and 110.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 20:03:28,516 INFO L158 Benchmark]: CodeCheck took 581.99ms. Allocated memory is still 201.3MB. Free memory was 110.0MB in the beginning and 151.5MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:03:28,516 INFO L158 Benchmark]: Witness Printer took 7.33ms. Allocated memory is still 201.3MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:03:28,521 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: 0.5s, 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: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1574. 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); [L1563] 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={2:0}] [L1414] COND TRUE line != ((void *)0) [L1563] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={28:27}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1572] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1574] EXPR data = atoi(inputBuffer) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1570-L1580] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1581] return data; [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1555] 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 0.32ms. Allocated memory is still 151.0MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1500.81ms. Allocated memory was 151.0MB in the beginning and 201.3MB in the end (delta: 50.3MB). Free memory was 99.8MB in the beginning and 129.6MB in the end (delta: -29.8MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.66ms. Allocated memory is still 201.3MB. Free memory was 129.6MB in the beginning and 126.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.27ms. Allocated memory is still 201.3MB. Free memory was 126.8MB in the beginning and 125.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.21ms. Allocated memory is still 201.3MB. Free memory was 125.5MB in the beginning and 110.0MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 581.99ms. Allocated memory is still 201.3MB. Free memory was 110.0MB in the beginning and 151.5MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.33ms. Allocated memory is still 201.3MB. Free memory is still 151.5MB. 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~post99 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 [2023-11-23 20:03:28,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/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_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/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_0022ee5e-3cd3-4a81-b6a4-384960a86168/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 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:03:31,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:03:31,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-23 20:03:31,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:03:31,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:03:31,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:03:31,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:03:31,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:03:31,421 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:03:31,422 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:03:31,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:03:31,423 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:03:31,424 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:03:31,424 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:03:31,425 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:03:31,425 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:03:31,426 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:03:31,426 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:03:31,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:03:31,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:03:31,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:03:31,429 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:03:31,429 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:03:31,430 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:03:31,430 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:03:31,431 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-23 20:03:31,431 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:03:31,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:03:31,432 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:03:31,432 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:03:31,433 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:03:31,433 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:03:31,434 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:03:31,434 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:03:31,434 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-23 20:03:31,435 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:03:31,435 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_0022ee5e-3cd3-4a81-b6a4-384960a86168/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d28e1504773aa93ecb1bdb3ae742961472b0ee47b3aedcde912d309fad9f6bf [2023-11-23 20:03:31,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:03:31,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:03:31,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:03:31,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:03:31,854 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:03:31,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2023-11-23 20:03:35,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:03:35,487 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:03:35,488 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_61_bad.i [2023-11-23 20:03:35,519 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data/d086a01bf/c6161292c20d4aa590a9d0aae7ee00a3/FLAG66b849faf [2023-11-23 20:03:35,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/data/d086a01bf/c6161292c20d4aa590a9d0aae7ee00a3 [2023-11-23 20:03:35,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:03:35,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:03:35,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:03:35,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:03:35,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:03:35,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:03:35" (1/1) ... [2023-11-23 20:03:35,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@330e432f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:35, skipping insertion in model container [2023-11-23 20:03:35,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:03:35" (1/1) ... [2023-11-23 20:03:35,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:03:36,099 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:03:36,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:03:36,841 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:03:36,874 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 20:03:36,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:03:37,100 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:37,101 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:37,101 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:37,101 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:37,101 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:37,102 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 20:03:37,110 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:03:37,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37 WrapperNode [2023-11-23 20:03:37,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:03:37,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:03:37,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:03:37,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:03:37,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,192 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-23 20:03:37,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:03:37,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:03:37,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:03:37,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:03:37,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:03:37,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:03:37,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:03:37,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:03:37,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:03:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:03:37,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:03:37,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:03:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 20:03:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 20:03:37,360 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 20:03:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:03:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:03:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:03:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:03:37,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:03:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:03:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 20:03:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 20:03:37,555 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:03:37,558 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:03:37,785 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:03:37,865 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:03:37,866 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 20:03:37,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:37 BoogieIcfgContainer [2023-11-23 20:03:37,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:03:37,869 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:03:37,869 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:03:37,879 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:03:37,880 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:37" (1/1) ... [2023-11-23 20:03:37,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:03:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:03:37,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-23 20:03:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-23 20:03:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:03:37,971 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:03:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 20:03:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/cvc4 [2023-11-23 20:03:37,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 20:03:38,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-23 20:03:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:38,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:03:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:38,452 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:03:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:03:38,534 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-23 20:03:38,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/bin/ukojak-verify-1t5iHCbJaC/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-23 20:03:38,541 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-23 20:03:38,578 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post97 could not be translated [2023-11-23 20:03:38,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:03:38 ImpRootNode [2023-11-23 20:03:38,585 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:03:38,587 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:03:38,587 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:03:38,588 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:03:38,588 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:03:37" (3/4) ... [2023-11-23 20:03:38,590 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:03:38,591 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:03:38,593 INFO L158 Benchmark]: Toolchain (without parser) took 3047.86ms. Allocated memory was 75.5MB in the beginning and 100.7MB in the end (delta: 25.2MB). Free memory was 47.2MB in the beginning and 67.6MB in the end (delta: -20.5MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-11-23 20:03:38,593 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 75.5MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:03:38,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1563.17ms. Allocated memory was 75.5MB in the beginning and 100.7MB in the end (delta: 25.2MB). Free memory was 47.0MB in the beginning and 49.3MB in the end (delta: -2.3MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2023-11-23 20:03:38,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.20ms. Allocated memory is still 100.7MB. Free memory was 49.3MB in the beginning and 46.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:03:38,596 INFO L158 Benchmark]: Boogie Preprocessor took 39.18ms. Allocated memory is still 100.7MB. Free memory was 46.1MB in the beginning and 44.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:03:38,598 INFO L158 Benchmark]: RCFGBuilder took 634.21ms. Allocated memory is still 100.7MB. Free memory was 44.0MB in the beginning and 56.5MB in the end (delta: -12.5MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-11-23 20:03:38,598 INFO L158 Benchmark]: CodeCheck took 716.52ms. Allocated memory is still 100.7MB. Free memory was 56.5MB in the beginning and 68.2MB in the end (delta: -11.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:03:38,599 INFO L158 Benchmark]: Witness Printer took 4.67ms. Allocated memory is still 100.7MB. Free memory is still 67.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:03:38,610 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: 1555]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1574. 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); [L1563] 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={2:0}] [L1414] COND TRUE line != ((void *)0) [L1563] 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] [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_61_bad() [L1551] int data; [L1552] data = 0 [L1553] CALL, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1572] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1574] EXPR data = atoi(inputBuffer) [L1571] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1570-L1580] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1581] return data; [L1553] RET, EXPR CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1553] data = CWE191_Integer_Underflow__int_fgets_postdec_61b_badSource(data) [L1555] 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 75.5MB. Free memory is still 51.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1563.17ms. Allocated memory was 75.5MB in the beginning and 100.7MB in the end (delta: 25.2MB). Free memory was 47.0MB in the beginning and 49.3MB in the end (delta: -2.3MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.20ms. Allocated memory is still 100.7MB. Free memory was 49.3MB in the beginning and 46.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.18ms. Allocated memory is still 100.7MB. Free memory was 46.1MB in the beginning and 44.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 634.21ms. Allocated memory is still 100.7MB. Free memory was 44.0MB in the beginning and 56.5MB in the end (delta: -12.5MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * CodeCheck took 716.52ms. Allocated memory is still 100.7MB. Free memory was 56.5MB in the beginning and 68.2MB in the end (delta: -11.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.67ms. Allocated memory is still 100.7MB. Free memory is still 67.6MB. 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~post97 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 [2023-11-23 20:03:38,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0022ee5e-3cd3-4a81-b6a4-384960a86168/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