./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:01:54,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:01:54,330 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 04:01:54,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:01:54,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 04:01:54,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:01:54,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:01:54,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:01:54,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:01:54,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:01:54,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:01:54,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:01:54,405 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:01:54,408 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:01:54,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:01:54,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:01:54,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:01:54,410 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:01:54,411 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:01:54,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:01:54,413 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:01:54,414 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:01:54,415 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:01:54,417 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:01:54,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:01:54,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:01:54,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:01:54,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:01:54,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:01:54,422 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 04:01:54,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:01:54,424 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:01:54,424 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_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2023-11-19 04:01:54,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:01:54,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:01:54,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:01:54,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:01:54,882 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:01:54,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2023-11-19 04:01:58,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:01:58,841 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:01:58,842 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2023-11-19 04:01:58,883 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data/cc8d42f69/d9263f05957143359cdd2ba898d25d5e/FLAGbfb976d46 [2023-11-19 04:01:58,904 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data/cc8d42f69/d9263f05957143359cdd2ba898d25d5e [2023-11-19 04:01:58,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:01:58,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:01:58,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:01:58,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:01:58,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:01:58,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:01:58" (1/1) ... [2023-11-19 04:01:58,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c347de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:01:58, skipping insertion in model container [2023-11-19 04:01:58,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:01:58" (1/1) ... [2023-11-19 04:01:59,021 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:01:59,536 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:00,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:00,419 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:02:00,451 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:00,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:00,764 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:00,764 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:00,765 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:00,765 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:00,765 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:00,765 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:00,775 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:02:00,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00 WrapperNode [2023-11-19 04:02:00,776 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:00,777 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:00,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:02:00,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:02:00,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,850 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,895 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2023-11-19 04:02:00,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:00,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:02:00,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:02:00,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:02:00,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,946 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:02:00,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:02:00,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:02:00,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:02:00,958 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:00" (1/1) ... [2023-11-19 04:02:00,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:00,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:02:01,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:02:01,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:02:01,067 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:02:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:02:01,068 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:02:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:02:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:02:01,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:02:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:02:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:02:01,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:02:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:02:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:02:01,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:02:01,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:02:01,277 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:02:01,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:02:01,473 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:02:01,532 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:02:01,533 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:02:01,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:01 BoogieIcfgContainer [2023-11-19 04:02:01,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:02:01,547 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:02:01,547 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:02:01,559 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:02:01,560 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:01" (1/1) ... [2023-11-19 04:02:01,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:02:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:02:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:02:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:02:01,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:02:01,666 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:02:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:02:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:01,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:02,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:02,187 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:02:02,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:02:02 ImpRootNode [2023-11-19 04:02:02,236 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:02:02,237 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:02:02,238 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:02:02,238 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:02:02,238 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:01" (3/4) ... [2023-11-19 04:02:02,241 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:02:02,243 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:02:02,245 INFO L158 Benchmark]: Toolchain (without parser) took 3331.28ms. Allocated memory is still 161.5MB. Free memory was 112.1MB in the beginning and 117.1MB in the end (delta: -5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:02,252 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 79.5MB in the end (delta: 34.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:02,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1859.84ms. Allocated memory is still 161.5MB. Free memory was 112.1MB in the beginning and 96.6MB in the end (delta: 15.5MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2023-11-19 04:02:02,254 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.60ms. Allocated memory is still 161.5MB. Free memory was 96.6MB in the beginning and 93.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:02:02,255 INFO L158 Benchmark]: Boogie Preprocessor took 49.22ms. Allocated memory is still 161.5MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:02:02,256 INFO L158 Benchmark]: RCFGBuilder took 599.18ms. Allocated memory is still 161.5MB. Free memory was 91.5MB in the beginning and 75.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:02:02,257 INFO L158 Benchmark]: CodeCheck took 689.34ms. Allocated memory is still 161.5MB. Free memory was 75.9MB in the beginning and 117.1MB in the end (delta: -41.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:02,257 INFO L158 Benchmark]: Witness Printer took 5.57ms. Allocated memory is still 161.5MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:02,262 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, 0.1s 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=48, argc=48, argv={47:49}, argv={47:49}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={6:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 109.1MB. Free memory was 79.6MB in the beginning and 79.5MB in the end (delta: 34.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1859.84ms. Allocated memory is still 161.5MB. Free memory was 112.1MB in the beginning and 96.6MB in the end (delta: 15.5MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 118.60ms. Allocated memory is still 161.5MB. Free memory was 96.6MB in the beginning and 93.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.22ms. Allocated memory is still 161.5MB. Free memory was 93.6MB in the beginning and 91.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 599.18ms. Allocated memory is still 161.5MB. Free memory was 91.5MB in the beginning and 75.9MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 689.34ms. Allocated memory is still 161.5MB. Free memory was 75.9MB in the beginning and 117.1MB in the end (delta: -41.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.57ms. Allocated memory is still 161.5MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:02:02,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:02:05,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:02:05,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-19 04:02:05,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:02:05,580 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:02:05,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 04:02:05,582 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:02:05,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:02:05,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:02:05,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:02:05,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:02:05,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:02:05,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:02:05,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:02:05,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:02:05,595 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:02:05,595 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:02:05,596 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:02:05,596 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:02:05,598 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:02:05,598 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:02:05,600 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 04:02:05,600 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 04:02:05,601 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 04:02:05,601 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:02:05,601 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-19 04:02:05,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:02:05,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:05,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:02:05,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:02:05,605 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:02:05,606 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:02:05,606 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:02:05,606 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:02:05,607 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-19 04:02:05,607 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:02:05,607 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_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2023-11-19 04:02:06,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:02:06,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:02:06,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:02:06,173 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:02:06,174 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:02:06,175 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2023-11-19 04:02:09,611 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:02:10,109 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:02:10,111 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2023-11-19 04:02:10,149 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data/16784a623/0c597a54e17946e98db959bd146f5add/FLAGa23ac59a3 [2023-11-19 04:02:10,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/data/16784a623/0c597a54e17946e98db959bd146f5add [2023-11-19 04:02:10,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:02:10,178 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:02:10,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:10,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:02:10,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:02:10,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:10" (1/1) ... [2023-11-19 04:02:10,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bceb93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:10, skipping insertion in model container [2023-11-19 04:02:10,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:02:10" (1/1) ... [2023-11-19 04:02:10,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:02:10,900 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:11,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:11,784 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:02:11,806 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:02:11,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:02:12,044 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:12,045 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:12,046 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:12,046 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:12,046 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:12,047 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:02:12,057 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:02:12,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12 WrapperNode [2023-11-19 04:02:12,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:02:12,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:12,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:02:12,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:02:12,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,161 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-11-19 04:02:12,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:02:12,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:02:12,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:02:12,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:02:12,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,219 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,225 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:02:12,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:02:12,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:02:12,260 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:02:12,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 04:02:12,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 04:02:12,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 04:02:12,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 04:02:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:02:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:02:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:02:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:02:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:02:12,574 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:02:12,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:02:12,814 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:02:12,894 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:02:12,899 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:02:12,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:12 BoogieIcfgContainer [2023-11-19 04:02:12,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:02:12,906 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 04:02:12,908 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 04:02:12,921 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 04:02:12,923 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:12" (1/1) ... [2023-11-19 04:02:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:02:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 04:02:13,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-19 04:02:13,025 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 04:02:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:02:13,033 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 04:02:13,034 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:02:13,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/cvc4 [2023-11-19 04:02:13,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:02:13,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-19 04:02:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:13,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:13,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:02:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:02:14,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-19 04:02:14,027 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-19 04:02:14,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 04:02:14 ImpRootNode [2023-11-19 04:02:14,061 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 04:02:14,062 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:02:14,062 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:02:14,062 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:02:14,063 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:02:12" (3/4) ... [2023-11-19 04:02:14,065 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:02:14,067 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:02:14,068 INFO L158 Benchmark]: Toolchain (without parser) took 3890.28ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 52.7MB in the beginning and 56.8MB in the end (delta: -4.2MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2023-11-19 04:02:14,069 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 79.7MB. Free memory was 55.3MB in the beginning and 55.1MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:02:14,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1878.69ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 52.5MB in the beginning and 72.5MB in the end (delta: -20.0MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-11-19 04:02:14,071 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.32ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 69.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:02:14,072 INFO L158 Benchmark]: Boogie Preprocessor took 81.23ms. Allocated memory is still 100.7MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:02:14,073 INFO L158 Benchmark]: RCFGBuilder took 660.75ms. Allocated memory is still 100.7MB. Free memory was 67.3MB in the beginning and 49.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:02:14,074 INFO L158 Benchmark]: CodeCheck took 1154.71ms. Allocated memory is still 100.7MB. Free memory was 49.0MB in the beginning and 57.5MB in the end (delta: -8.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:02:14,075 INFO L158 Benchmark]: Witness Printer took 5.65ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 56.8MB in the end (delta: 657.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:02:14,079 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: 1.1s, 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={7:0}] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 79.7MB. Free memory was 55.3MB in the beginning and 55.1MB in the end (delta: 141.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1878.69ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 52.5MB in the beginning and 72.5MB in the end (delta: -20.0MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.32ms. Allocated memory is still 100.7MB. Free memory was 72.5MB in the beginning and 69.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.23ms. Allocated memory is still 100.7MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 660.75ms. Allocated memory is still 100.7MB. Free memory was 67.3MB in the beginning and 49.0MB in the end (delta: 18.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1154.71ms. Allocated memory is still 100.7MB. Free memory was 49.0MB in the beginning and 57.5MB in the end (delta: -8.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.65ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 56.8MB in the end (delta: 657.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:02:14,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b64792e-bee3-4039-8751-40f8d0d61c93/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample