./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9 --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 ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:00:28,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:00:28,237 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-02 23:00:28,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 23:00:28,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 23:00:28,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:00:28,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 23:00:28,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 23:00:28,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:00:28,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:00:28,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:00:28,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:00:28,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 23:00:28,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:00:28,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:00:28,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:00:28,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:00:28,270 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 23:00:28,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 23:00:28,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:00:28,272 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:00:28,273 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:00:28,274 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:00:28,274 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:00:28,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:00:28,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:00:28,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:00:28,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:00:28,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 23:00:28,277 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 23:00:28,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 23:00:28,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 23:00:28,278 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_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 [2023-12-02 23:00:28,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:00:28,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:00:28,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:00:28,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:00:28,510 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:00:28,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-12-02 23:00:31,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:00:31,626 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:00:31,626 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-12-02 23:00:31,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data/2bb738baa/e883d6266000450aaaca99b415284b7f/FLAG5f55338e7 [2023-12-02 23:00:31,661 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data/2bb738baa/e883d6266000450aaaca99b415284b7f [2023-12-02 23:00:31,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:00:31,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:00:31,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:00:31,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:00:31,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:00:31,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:31" (1/1) ... [2023-12-02 23:00:31,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce00bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:31, skipping insertion in model container [2023-12-02 23:00:31,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:31" (1/1) ... [2023-12-02 23:00:31,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:00:32,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:00:32,485 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:00:32,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:00:32,728 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:32,729 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:32,729 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:32,729 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:32,729 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:32,737 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:00:32,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32 WrapperNode [2023-12-02 23:00:32,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:00:32,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:00:32,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:00:32,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:00:32,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,805 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2023-12-02 23:00:32,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:00:32,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:00:32,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:00:32,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:00:32,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,834 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:00:32,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:00:32,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:00:32,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:00:32,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:32" (1/1) ... [2023-12-02 23:00:32,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:00:32,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:00:32,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:00:32,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:00:32,907 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 23:00:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 23:00:32,908 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 23:00:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 23:00:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 23:00:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 23:00:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:00:32,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:00:32,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:00:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 23:00:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 23:00:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 23:00:32,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 23:00:33,056 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:00:33,060 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:00:33,176 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:00:33,221 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:00:33,221 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 23:00:33,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:33 BoogieIcfgContainer [2023-12-02 23:00:33,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:00:33,224 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:00:33,225 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:00:33,233 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:00:33,234 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:33" (1/1) ... [2023-12-02 23:00:33,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:00:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:00:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-12-02 23:00:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-02 23:00:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 23:00:33,303 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:00:33,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 23:00:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:33,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:00:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:33,604 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:00:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:33,646 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-02 23:00:33,670 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-12-02 23:00:33,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 11:00:33 ImpRootNode [2023-12-02 23:00:33,676 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 23:00:33,677 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 23:00:33,677 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 23:00:33,677 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 23:00:33,677 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:33" (3/4) ... [2023-12-02 23:00:33,680 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 23:00:33,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 23:00:33,682 INFO L158 Benchmark]: Toolchain (without parser) took 2017.39ms. Allocated memory was 182.5MB in the beginning and 243.3MB in the end (delta: 60.8MB). Free memory was 130.8MB in the beginning and 152.6MB in the end (delta: -21.8MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2023-12-02 23:00:33,683 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory was 49.8MB in the beginning and 49.6MB in the end (delta: 151.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:00:33,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1072.91ms. Allocated memory was 182.5MB in the beginning and 243.3MB in the end (delta: 60.8MB). Free memory was 130.8MB in the beginning and 195.6MB in the end (delta: -64.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. [2023-12-02 23:00:33,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.08ms. Allocated memory is still 243.3MB. Free memory was 195.6MB in the beginning and 193.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:00:33,685 INFO L158 Benchmark]: Boogie Preprocessor took 30.88ms. Allocated memory is still 243.3MB. Free memory was 193.5MB in the beginning and 191.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:00:33,686 INFO L158 Benchmark]: RCFGBuilder took 386.17ms. Allocated memory is still 243.3MB. Free memory was 191.4MB in the beginning and 175.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 23:00:33,686 INFO L158 Benchmark]: CodeCheck took 451.45ms. Allocated memory is still 243.3MB. Free memory was 174.6MB in the beginning and 152.6MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 23:00:33,687 INFO L158 Benchmark]: Witness Printer took 4.52ms. Allocated memory is still 243.3MB. Free memory is still 152.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:00:33,690 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1580]: 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, overapproximation of large string literal at line 1571. 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); [L1571] 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) [L1571] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=44, argc=44, argv={43:45}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] 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."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_sub_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1580] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={6:0}, dataArray={6:0}, 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 0.23ms. Allocated memory is still 100.7MB. Free memory was 49.8MB in the beginning and 49.6MB in the end (delta: 151.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1072.91ms. Allocated memory was 182.5MB in the beginning and 243.3MB in the end (delta: 60.8MB). Free memory was 130.8MB in the beginning and 195.6MB in the end (delta: -64.8MB). Peak memory consumption was 65.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.08ms. Allocated memory is still 243.3MB. Free memory was 195.6MB in the beginning and 193.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.88ms. Allocated memory is still 243.3MB. Free memory was 193.5MB in the beginning and 191.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 386.17ms. Allocated memory is still 243.3MB. Free memory was 191.4MB in the beginning and 175.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 451.45ms. Allocated memory is still 243.3MB. Free memory was 174.6MB in the beginning and 152.6MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 4.52ms. Allocated memory is still 243.3MB. Free memory is still 152.6MB. 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: unknown boogie variable #t~nondet102 - 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 [2023-12-02 23:00:33,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9 --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 ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 23:00:35,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 23:00:35,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-12-02 23:00:35,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 23:00:35,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 23:00:35,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 23:00:35,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 23:00:35,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 23:00:35,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 23:00:35,797 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 23:00:35,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 23:00:35,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 23:00:35,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 23:00:35,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 23:00:35,799 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 23:00:35,800 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 23:00:35,800 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 23:00:35,801 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 23:00:35,801 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 23:00:35,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 23:00:35,802 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 23:00:35,803 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 23:00:35,804 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 23:00:35,804 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 23:00:35,805 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 23:00:35,805 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-02 23:00:35,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 23:00:35,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:00:35,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 23:00:35,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 23:00:35,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 23:00:35,808 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 23:00:35,808 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 23:00:35,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 23:00:35,809 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-02 23:00:35,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 23:00:35,809 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_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba64d58b3e01052798cfd796bd911f497689e4f5efd7291b07f123a324c18dc2 [2023-12-02 23:00:36,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 23:00:36,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 23:00:36,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 23:00:36,120 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 23:00:36,120 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 23:00:36,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-12-02 23:00:38,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 23:00:39,325 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 23:00:39,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_66_bad.i [2023-12-02 23:00:39,348 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data/b3e9e7309/4a6ab499bd904f4f85c359e4aefc3e9a/FLAG0a02b488c [2023-12-02 23:00:39,363 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/data/b3e9e7309/4a6ab499bd904f4f85c359e4aefc3e9a [2023-12-02 23:00:39,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 23:00:39,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 23:00:39,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 23:00:39,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 23:00:39,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 23:00:39,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:39" (1/1) ... [2023-12-02 23:00:39,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627cc39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:39, skipping insertion in model container [2023-12-02 23:00:39,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:39" (1/1) ... [2023-12-02 23:00:39,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 23:00:40,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:00:40,288 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 23:00:40,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 23:00:40,491 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:40,491 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:40,491 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:40,491 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:40,491 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 23:00:40,497 INFO L206 MainTranslator]: Completed translation [2023-12-02 23:00:40,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40 WrapperNode [2023-12-02 23:00:40,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 23:00:40,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 23:00:40,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 23:00:40,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 23:00:40,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,557 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2023-12-02 23:00:40,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 23:00:40,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 23:00:40,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 23:00:40,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 23:00:40,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,598 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 23:00:40,599 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 23:00:40,599 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 23:00:40,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 23:00:40,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:40" (1/1) ... [2023-12-02 23:00:40,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 23:00:40,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 23:00:40,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 23:00:40,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 23:00:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-02 23:00:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 23:00:40,665 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 23:00:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 23:00:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 23:00:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 23:00:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 23:00:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 23:00:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 23:00:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 23:00:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 23:00:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 23:00:40,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-02 23:00:40,831 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 23:00:40,833 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 23:00:40,996 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 23:00:41,039 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 23:00:41,039 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 23:00:41,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:41 BoogieIcfgContainer [2023-12-02 23:00:41,041 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 23:00:41,042 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 23:00:41,042 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 23:00:41,050 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 23:00:41,051 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:41" (1/1) ... [2023-12-02 23:00:41,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 23:00:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 23:00:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-12-02 23:00:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-02 23:00:41,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 23:00:41,113 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 23:00:41,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 23:00:41,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 23:00:41,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 23:00:41,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-02 23:00:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:41,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:00:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:41,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 23:00:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 23:00:41,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-02 23:00:41,896 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-02 23:00:41,919 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-12-02 23:00:41,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 11:00:41 ImpRootNode [2023-12-02 23:00:41,925 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 23:00:41,926 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 23:00:41,926 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 23:00:41,926 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 23:00:41,927 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:41" (3/4) ... [2023-12-02 23:00:41,929 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 23:00:41,930 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 23:00:41,931 INFO L158 Benchmark]: Toolchain (without parser) took 2563.50ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 61.2MB in the end (delta: 31.3MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2023-12-02 23:00:41,931 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 62.9MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:00:41,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1128.98ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 57.5MB in the end (delta: 34.7MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2023-12-02 23:00:41,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.33ms. Allocated memory is still 119.5MB. Free memory was 57.5MB in the beginning and 54.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:00:41,933 INFO L158 Benchmark]: Boogie Preprocessor took 39.49ms. Allocated memory is still 119.5MB. Free memory was 54.7MB in the beginning and 52.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 23:00:41,934 INFO L158 Benchmark]: RCFGBuilder took 442.54ms. Allocated memory is still 119.5MB. Free memory was 51.9MB in the beginning and 83.0MB in the end (delta: -31.1MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-12-02 23:00:41,935 INFO L158 Benchmark]: CodeCheck took 883.35ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 62.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 23:00:41,935 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 119.5MB. Free memory was 62.0MB in the beginning and 61.2MB in the end (delta: 754.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 23:00:41,938 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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, 0.2s 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: 1580]: 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, overapproximation of large string literal at line 1571. 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); [L1571] 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) [L1571] 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] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] 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."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_sub_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1580] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={7:0}, dataArray={7:0}, 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 0.21ms. Allocated memory is still 62.9MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1128.98ms. Allocated memory is still 119.5MB. Free memory was 92.2MB in the beginning and 57.5MB in the end (delta: 34.7MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.33ms. Allocated memory is still 119.5MB. Free memory was 57.5MB in the beginning and 54.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.49ms. Allocated memory is still 119.5MB. Free memory was 54.7MB in the beginning and 52.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.54ms. Allocated memory is still 119.5MB. Free memory was 51.9MB in the beginning and 83.0MB in the end (delta: -31.1MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * CodeCheck took 883.35ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 62.0MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 119.5MB. Free memory was 62.0MB in the beginning and 61.2MB in the end (delta: 754.8kB). 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: unknown boogie variable #t~nondet100 - 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 [2023-12-02 23:00:41,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71a85860-8e90-4d68-9bfa-9750c0936617/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample